CN108403263A - Patellofemoral joint prosthese and preparation method thereof - Google Patents
Patellofemoral joint prosthese and preparation method thereof Download PDFInfo
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- CN108403263A CN108403263A CN201810171802.7A CN201810171802A CN108403263A CN 108403263 A CN108403263 A CN 108403263A CN 201810171802 A CN201810171802 A CN 201810171802A CN 108403263 A CN108403263 A CN 108403263A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/38—Joints for elbows or knees
- A61F2/3836—Special connection between upper and lower leg, e.g. constrained
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Abstract
The present invention relates to medical instruments field, a kind of patellofemoral joint prosthese and preparation method thereof is disclosed.The patellofemoral joint prosthese includes femoral bone pulley prosthese and patellar prosthesis, and femoral bone pulley prosthese includes the entocondyle and external condyle positioned at the both sides of femoral bone pulley prosthese, and connects the coaster ditch of entocondyle and external condyle.Wherein, entocondyle and external condyle are connect with different radius of curvature with coaster ditch arc respectively, so that entocondyle, joint face that external condyle and coaster ditch are collectively formed constitute for the matched cooperation curved surface of patellar prosthesis, femoral bone pulley prosthese further includes being formed in being relatively fixed face with cooperation curved surface for femoral bone pulley prosthese, fixation kit is formed on stationary plane, patellar prosthesis include and cooperation the matched joint curved surface of curved surface, ellipsoidal cross section of the joint curved surface under vertical view state, section under state of facing is in asymmetrical parabola shaped, it is formed with connecting pole on the face opposite with joint curved surface of patellar prosthesis.The patellofemoral joint prosthese is more suitable for compatriots' use.
Description
Technical field
The present invention relates to medical instruments fields, and in particular to a kind of patellofemoral joint prosthese and preparation method thereof.
Background technology
Gonitis is a kind of common, chronic, progressivity joint disease, and it is more than 50% to account for Osteoarthritis ratio,
Middle patellofemoral joint Osteoarthritis accounts for about 67% in gonitis.Total knee arthroplasty is treatment late period knee joint bone
The effective ways of the lesions such as arthritis, rheumatoid arthritis.Counted according to related data, at present the U.S. have every year nearly 600,000 people into
Row total knee replacement, in the past 10 years, with the constantly improve of medical insurance system, China receives total knee replacement (TKA)
Patient populations are also in cumulative year after year.But TKA surgical wounds are larger, tissue damage is extensive, for youth, simple patellofemoral joint
Scorching patient, patello-femoral joint replacement (PFA) are more suitable.PFA remains the physiological function of shin femoral joint, only row kneecap in contrast to TKA
Femoral joint is replaced, and surgical wound is compared with small, tissue damage is few.PFA prostheses and technology are improved, avoids TKA as possible, is the simple kneecap for the treatment of
Femoral joint one important directions of inflammation, patellofemoral joint prosthese application market have a extensive future.
Clinical and experimental study shows：After the matching of prosthese and human synovial original structure size is for artificial joint replacement
Initial stage stablizes and biology fixation thereafter is most important, has well to reducing prosthese fine motion, increase Bone Ingrowth, forming strong construction
Benefit.But Patella In Ceinese thickness is less than west white people, and kneecap length is also below west white people, due to the difference of ethnic group,
Designing PFA prostheses based on the white patellofemoral joint morphological feature in west can not entirely appropriate Chinese.PFA at present
Follow-up results and unsatisfactory, compatriots using import kneecap stock prosthese be it is postoperative occur patellofemoral joint excessively clog, kneecap bullet
One major reason of the complication such as sound.Country's patellofemoral joint prosthese is also rarely found at present, develops high quality and suitable for China
The prosthese of compatriots' feature and mating instrument are the key that treatment compatriots' patellofemoral arthritis.
In view of the deficiencies of the prior art, the highly desirable one kind of seeking of those skilled in the art is suitable for Chinese compatriots
Patellar joint prosthese of feature and preparation method thereof, to avoid it is postoperative occur patellofemoral joint excessively clog, kneecap snap etc. it is concurrent
Disease.
Invention content
In order to seek a kind of patellofemoral joint prosthese being suitable for Chinese compatriots' feature, there is patellofemoral joint mistake to avoid postoperative
Spend filling, the complication such as kneecap snap, the present invention proposes a kind of patellofemoral joint prosthese and preparation method thereof.
Patellofemoral joint prosthese according to the present invention, including femoral bone pulley prosthese and patellar prosthesis, femoral bone pulley prosthese include
Entocondyle and external condyle positioned at the both sides of femoral bone pulley prosthese, and connect the coaster ditch of entocondyle and external condyle, wherein it is interior
Side condyle and external condyle are connect with different radius of curvature with coaster ditch arc respectively, so that entocondyle, external condyle and coaster ditch are total
With formed joint face constitute for the matched cooperation curved surface of patellar prosthesis, femoral bone pulley prosthese further includes being formed in femur
Coaster prosthese opposite with cooperation curved surface and it to be used for the stationary plane that is connected with sclerotin, fixation kit, kneecap are formed on stationary plane
Prosthese includes being faced with the cooperation matched joint curved surface of curved surface, ellipsoidal cross section of the joint curved surface under vertical view state
Section under state in asymmetrical parabola shaped, formed on the face opposite with joint curved surface of patellar prosthesis for human body
The connected connecting pole of sclerotin.
Further, the width of femoral bone pulley prosthese and the ratio of length are between 0.94 to 1.56.Preferably
1.195。
Further, the minimum point of coaster ditch to the vertical range of entocondyle and the vertex line of external condyle numberical range
Between 5.1mm between 8.9mm.Preferably 6.273mm.
Further, the minimum point of coaster ditch is to the minimum point of horizontal distance and the coaster ditch at entocondyle most edge to outside
The ratio between the horizontal distance at condyle most edge is between 0.835 to 1.993.Preferably 1.152.
Further, the stationary plane of femoral bone pulley prosthese includes that the line of maximum breadth upright projection of femoral bone pulley prosthese exists
Ridge is formed by stationary plane, stationary plane is divided into first surface and second surface, the area of wherein first surface to be more than by ridge
The area of second surface, and obtuse angle is formed between first surface and second surface, first surface is formed as plane, second surface packet
The first plane and the second plane are included, the first plane is more than 180 ° with the angle that the second plane is formed and is less than or equal to 270 °.
Further, fixation kit includes three fixed columns being formed on stationary plane and at least two fixinig plates, three
One in fixed column is arranged on the connecting line of the first plane and the second plane, other two is symmetricly set on first surface
On, at least two fixinig plates are arranged in the outer edge position of stationary plane.
Further, the line of three fixed columns is formed as equilateral triangle.
Further, titanium-based HA coatings are formed on stationary plane.
Further, the outer peripheral thickness of femoral bone pulley prosthese is less than the thickness in other regions of femoral bone pulley prosthese,
And the outer edge of femoral bone pulley prosthese is formed as smooth arcuation.
Further, under the use state of femoral bone pulley prosthese, the company of the minimum point of the coaster ditch of femoral bone pulley prosthese
Line is formed with offset distance between the line relative to the minimum point of the coaster ditch of the femoral bone pulley of human body script.
Further, under vertical view state, the angle between the line at the peak on the curved surface of joint and the long axis of patellar prosthesis
Between 8.86 ° to 11.46 °, for the numberical range of the length of patellar prosthesis between 34.16mm between 54.83mm, kneecap is false
The numberical range of the width of body between 32.92mm between 50.32mm, the numberical range of the thickness of patellar prosthesis between
18.83mm between 32.34mm.
The production method according to the present invention for making above-mentioned patellofemoral joint prosthese, includes the following steps：To multiple and different years
The age healthy person of section is divided so that includes male's group and women in each age bracket in the healthy person of different age group
Group, each male organize and also include different height groups in women group；Respectively to the femoral bone pulley of different groups of each healthy person
It is measured with the form of kneecap, to obtain the average molecular parameters of the patellofemoral joint of healthy person；According to obtained average structure
Parameter builds the threedimensional model of corresponding femoral bone pulley prosthese and patellar prosthesis.
Further, include when being measured to the form of the femoral bone pulley of each healthy person to following average molecular parameters into
Row measures：Measure the vertex line of the width and height, the minimum point of coaster ditch to entocondyle and external condyle of human femur under loading coaster
Vertical range and coaster ditch minimum point to the horizontal distance at entocondyle most edge and the minimum point of coaster ditch to external condyle
The horizontal distance at most edge.
Further, it generates and compiles using CT scan and 3-D view when being measured with height to the width of femoral bone pulley
The step of volume processing software carries out simulation osteotomy to the femur of healthy person, the simulation osteotomy include：Take distal femur most bull wheel
Condyle axis of the line as simulation osteotomy on profile between interior condyle and ectocondyle；The minimum point of cortex on front side of condyle of femur is chosen as mould
Quasi- osteotomy point；It is intercepted along being parallel to condyle axis and carrying out simulation to femur by the straight line of simulation osteotomy point to obtain osteotomy surface；It surveys
Measure width and height of the width of the osteotomy surface with highly to obtain femoral bone pulley.
Further, the form of the kneecap of each healthy person is measured including being measured to following parameter：Kneecap
Angle between the kneecap ridge and the long axis of kneecap of length, width and thickness and kneecap.
Further, when building the threedimensional model of femoral bone pulley prosthese, include the following steps：It is slided according to the femur of gained
The cooperation curved surface of the corresponding average molecular parameters structure femoral bone pulley prosthese of vehicle so that entocondyle and external condyle are respectively with different
Curvature is connect with coaster ditch arc；Build the stationary plane of femoral bone pulley prosthese so that stationary plane is formed as including first surface, the
One plane and the second plane；A fixed column is formed on the connecting line of the first plane and the second plane, in the first plane and the
The marginal position of two planes forms fixinig plate, is symmetrically formed two fixed columns on the first surface.
Further, when building the stationary plane of femoral bone pulley prosthese, further include：The stationary plane of femoral bone pulley prosthese is applied
Cover titanium-based HA coatings.
Further, when building the threedimensional model of femoral bone pulley prosthese, further include：The edge of femoral bone pulley prosthese is made
Thin smoothing processing.
Further, when building the threedimensional model of patellar prosthesis, further include：According to the corresponding average knot of the kneecap of gained
Structure parameter builds the joint curved surface of patellar prosthesis so that ellipsoidal cross section of the joint curved surface under vertical view state is facing shape
Section under state is in asymmetrical parabola shaped；On the face opposite with joint curved surface of patellar prosthesis formed for human body
The connected connecting pole of sclerotin.
The patellofemoral joint prosthese of the present invention is directed to the use demand of Chinese compatriots, and the femur for substantially envisaging Chinese is slided
The dissection correspondence of vehicle prosthese and patellar prosthesis has adapted to the physiological requirement of the patellofemoral joint movement of Chinese from mechanism,
The collision of prosthese when avoiding knee sprung, can effectively reduce patellofemoral joint excessively clog, the complication such as kneecap snap, increase
Kneed mobility.The patellofemoral joint prosthese of the present invention can be adapted to compatriots according to femoral bone pulley prosthese and patellar prosthesis
Multiple Type is made in the size of prosthese, to make designed prosthese suitable for the operation of most of compatriots' patello-femoral joint replacements,
More more applicable optional schemes are provided for attending physician.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described.In all the appended drawings, similar element
Or part is generally identified by similar reference numeral.In attached drawing, each element or part might not be drawn according to actual ratio.
Fig. 1 is the front view according to the structure of the femoral bone pulley prosthese of the present invention；
Fig. 2 is the side view according to the structure of the femoral bone pulley prosthese of the present invention；
Fig. 3 is the upward view according to the structure of the femoral bone pulley prosthese of the present invention；
Fig. 4 is the vertical view according to the structure of the femoral bone pulley prosthese of the present invention；
Fig. 5 is the structural schematic diagram according to the patellar prosthesis of the present invention；
Fig. 6 is the schematic diagram that the femur sectional dimension of human body measures；
Fig. 7 is the schematic diagram of the dimensional measurement of the femoral bone pulley of human body；
Fig. 8 is the size measuring structure schematic diagram of the kneecap of human body.
Fig. 9 is the use state diagram of the femoral bone pulley prosthese of the present invention.
Specific implementation mode
The embodiment of technical solution of the present invention is described in detail below in conjunction with attached drawing.Following embodiment is only used for
Clearly illustrate technical scheme of the present invention, therefore be only used as example, and the protection model of the present invention cannot be limited with this
It encloses.
Fig. 1 to 5 shows the structural schematic diagram of patellofemoral joint prosthese according to the present invention.In conjunction with shown in Fig. 1 to 5, the kneecap
Femoral joint prosthese includes femoral bone pulley prosthese 1 (shown in Fig. 1 to 4) and patellar prosthesis 2 (shown in Fig. 5).As shown in Figure 1, femur is slided
Vehicle prosthese 1 includes the entocondyle 111 and external condyle 112 positioned at the both sides of femoral bone pulley prosthese 1, and connects 111 He of entocondyle
The coaster ditch 113 of external condyle 112.Wherein, entocondyle 111 and external condyle 112 are respectively with different radius of curvature and coaster ditch 113
Arc connects, so that the joint face composition that entocondyle 111, external condyle 112 and coaster ditch 113 are collectively formed is used for and patellar prosthesis
2 matched cooperation curved surfaces 11, femoral bone pulley prosthese 1 further include be formed in femoral bone pulley prosthese 1 opposite with cooperation curved surface 11
Being formed with fixation kit and for the stationary plane 12 that is connected with sclerotin, on stationary plane 12, (fixation kit includes 13 He of fixed column
Fixinig plate 16 is as shown in Figure 2).As shown in figure 5, patellar prosthesis 2 includes and cooperation 11 matched joint curved surface 21 of curved surface, joint
Ellipsoidal cross section of the curved surface 21 under vertical view state, the section under state of facing is in asymmetrical parabola shaped, kneecap vacation
The connecting pole 22 being connected for the sclerotin with human body is formed on the face opposite with joint curved surface 21 of body 2.
The present invention patellofemoral joint prosthese when in use, first at the femoral bone pulley of patient's patellofemoral joint carry out osteotomy,
Drilling coordinates femoral bone pulley prosthese 1 by its fixation kit and the hole bored, and by bone cement by femoral bone pulley prosthese 1
It is fixed with the femur of patient, displacement patellar prosthesis 2 is then determined according to the state of an illness by doctor, if you need to replace, intercepts part kneecap
Patellar prosthesis 2 is connected through column 22 and the hole bored coordinates by bone, drilling, and by bone cement by patellar prosthesis and patient
Kneecap be fixed.The present invention by by entocondyle 111 and external condyle 112 respectively with different radius of curvature and coaster ditch
The connection of 113 arcs is to form cooperation curved surface 11 so that curved surface 11 is closer to true femoral surface；By by patellar prosthesis 2
Articular surface 21 be arranged to the ellipsoidal cross section under vertical view state, the section under state of facing be in asymmetrical parabola
Shape, i.e., so that the line (shown in inclined dotted line as shown in Figure 5) and patellar prosthesis at the peak on the articular surface 21 of patellar prosthesis 2
There are included angle As 1 between 2 long axis (shown in horizontal dotted line as shown in Figure 5), that is to say, that patellar prosthesis 2 is made to face shape
The line at peak has definitely offset relative to the long axis of patellar prosthesis 2 under state so that patellar prosthesis 2 is more closely similar to natural kneecap
Bone, so as to preferably coordinate with femoral bone pulley prosthese 1.
The patellofemoral joint prosthese of the present invention is directed to the use demand of Chinese compatriots, and the femur for substantially envisaging Chinese is slided
The dissection correspondence of vehicle prosthese 1 and patellar prosthesis 2, the physiology that the patellofemoral joint movement of Chinese has been adapted to from mechanism are wanted
Ask, the collision of prosthese when avoiding knee sprung, can effectively reduce patellofemoral joint excessively clog, the complication such as kneecap snap,
Increase kneed mobility.The patellofemoral joint prosthese of the present invention can be according to the adaptation of femoral bone pulley prosthese 1 and patellar prosthesis 2
Multiple Type is made in the size of compatriots' prosthese, to make designed prosthese be suitable for most of compatriots' patello-femoral joint replacement hands
In art, more more applicable optional schemes are provided for attending physician.
It is worth noting that, according to the present invention, the size for being adapted to compatriots' prosthese can be by specific structural parameters (under i.e.
Average molecular parameters described in face) it obtains, for femoral bone pulley prosthese 1, in conjunction with shown in Fig. 1 and Fig. 4, the specific knot
Structure parameter for example can be the minimum point of the ratio of the width W1 and height D1 of femoral bone pulley prosthese 1, coaster ditch 113 to entocondyle
111 with the level of the minimum point of the vertical range H of the vertex line of external condyle 112 and coaster ditch to the most edge of entocondyle 111
The minimum point of distance W3 and coaster ditch is to the ratio between the horizontal distance W 4 at the most edge of external condyle 112 etc..Preferably, femoral bone pulley prosthese
The ratio of 1 width W1 and height D1 are between 0.94 to 1.56, and preferably 1.195；The minimum point of coaster ditch 113 is to inside
The numberical range of the vertical range H of the vertex line of condyle 111 and external condyle 112 between 5.1mm between 8.9mm, preferably
6.273mm；The minimum point of coaster ditch 113 is to the minimum point of horizontal distance and the coaster ditch 113 at the most edge of entocondyle 111 to outside
The ratio between the horizontal distance at the most edge of condyle 112 is between 0.835 to 1.993, and preferably 1.152.And for patellar prosthesis 2
It says, as shown in figure 5, the specific structural parameters for example can be length H3, width W3, thickness D3 and the kneecap of patellar prosthesis 2
Included angle A 1 etc. between the line and the long axis of patellar prosthesis 2 at the peak of bone prosthese 2.Preferably, the numerical value of the length of patellar prosthesis 2
Range is preferably between 34.16~54.83mm, preferably 41.26mm；The numberical range of the width of patellar prosthesis 2 is preferably situated between
In 32.92 between 50.32mm, preferably 44.03mm；The numberical range of the thickness of patellar prosthesis 2 is preferably between 18.83~
Between 32.34mm, preferably 23.23mm；The numerical value of angle between the kneecap ridge and the long axis of patellar prosthesis 2 of patellar prosthesis 2
Range is between 8.86 ° to 11.46 °, preferably 10.58 °.
According to the present invention, as shown in figure 3, the stationary plane 12 of femoral bone pulley prosthese 1 includes by the maximum of femoral bone pulley prosthese 1
Wide line upright projection is formed by ridge 14 on stationary plane, and stationary plane 12 is divided into first surface 121 and the second table by ridge 14
Face (including the first plane 122 and second plane 123), the wherein area of first surface 121 are more than the area of second surface, and the
Obtuse angle is formed between one surface 121 and second surface, which is preferably 120 ° to 150 °, further preferably 145 °, and first
Surface 121 is formed as plane, and the angle that the first plane 122 and the second plane 123 are formed is more than 180 ° and is less than or equal to 270 °, preferably
It is 210 °.The setting can be that the natural form of patient's post-operative recovery femoral bone pulley prosthese 1 provides a strong guarantee.
In the embodiment shown in fig. 3, fixation kit includes into three fixed columns 13 on stationary plane 12 and extremely
Lack two fixinig plates 16, a connecting line 15 being arranged in the first plane 122 and the second plane 123 in three fixed columns 13
On, other two is symmetricly set on first surface 121, and the marginal position in stationary plane 12 is arranged at least two fixinig plates 16,
To realize being auxiliarily fixed to femoral bone pulley prosthese 1.It is further preferred that the line of three fixed columns 13 is formed as equilateral triangle
Shape.Stability of the femoral bone pulley prosthese 1 when fixed can be improved in the setting, to be effectively improved Long-term therapy effect.
It is further preferred that three fixed columns 13 are identical, and the axis of three fixed columns 13 is mutually parallel, the diameter of three fixed columns 13
Both preferably 5mm, in favor of further increasing the replaceability of stability and prosthese of the femoral bone pulley prosthese 1 when fixed.
Further, titanium-based HA (hydroxyapatite) coating (not shown) is formed on stationary plane 12.Titanium-based HA
Coating makes the stationary plane 12 of femoral bone pulley prosthese 1 have higher toughness, intensity and bioactivity, postoperative new so as to accelerate
Bone lengthening is conducive to implantation material and stablizes in early days, shortens postoperative healing stage.
According to the present invention, as shown in Fig. 2, the outer peripheral thickness of femoral bone pulley prosthese 1 is less than its of femoral bone pulley prosthese 1
The thickness in its region, and the outer edge of femoral bone pulley prosthese 1 is formed as smooth arcuation.By the setting, stock can be effectively reduced
The stress concentration phenomenon that bone coaster prosthese 1 generates in use, in favor of the stabilization of the structure of increase femoral bone pulley prosthese 1
Property and reliability, meanwhile, stretch function in the wrong to restoring human body patellofemoral joint face anatomical structure and knee joint and have good result.
As shown in figure 9, the femoral bone pulley prosthese 1 of the present invention is in a state of use, that is, it is mounted on the osteotomy of the femur 3 of human body
When on face, the coaster of the line S1 of the minimum point of the coaster ditch 113 of femoral bone pulley prosthese 1 relative to the femoral bone pulley of human body script
It is formed with offset distance M between the line S2 of the minimum point of ditch, to change the knee joint line of force, offer mechanics is supported, is utmostly saved from damage
Knee joint kinetic mechanism.Preferably, which is 2mm to 5mm, preferably 4mm.
In addition, the invention also provides a kind of production methods making above-mentioned patellofemoral joint prosthese.In conjunction with Fig. 7 and Fig. 8 institutes
Show, this approach includes the following steps：The healthy person of multiple and different age brackets is divided so that the healthy person of different age group
In each age bracket in include male's group and women group, also include difference in each male's group and the women group
Height group；Different groups of the femoral bone pulley of each healthy person and the form of kneecap are measured respectively, to obtain healthy person
The average molecular parameters of patellofemoral joint；Corresponding femoral bone pulley prosthese and patellar prosthesis are built according to obtained average molecular parameters
Threedimensional model.
The production method of patellofemoral joint prosthese according to the present invention, passes through the patellofemoral joint of the healthy person to different age group
Form is grouped the making foundation that sampling is used as patellofemoral joint prosthese, can produce the model suitable for different groups
Kneecap stock prosthese, for corresponding group patient be applicable in, more reasonable structure stablize.Method through the invention can make femur
Anatomy relationship between coaster prosthese 1 and patellar prosthesis 2 is fully corresponding, and the physiology that patellofemoral joint movement has been adapted to from mechanism is wanted
It asks, the collision of prosthese when avoiding knee sprung, complication can be reduced, increase knee articulation degree.
In a preferred embodiment, age bracket can be specifically divided into 20 to 25 years old, 26 to 30 years old, 31 years old to 35
Year, 35 years old to 40 years old four sub- age brackets, each age bracket are further divided into male's group and women group, for male's group, divide
It is not further divided into 165cm to 170cm, 171cm to 175cm, 175cm to tri- sub- male's groups of 180cm；For women group,
It is further divided into 155cm respectively to 160cm, 161cm to 165cm, 166cm to tri- sub- women groups of 170cm；In every offspring
Property group and sub- male's group in choose respectively 300 healthy persons patellofemoral joint data as according to obtaining the flat of patellofemoral joint
Equal structural parameters, the average molecular parameters should be understood as being averaged for the corresponding construction parameter of the patellofemoral joint of 300 healthy persons
Value.
Include to following according to the present invention, when as shown in fig. 7, being measured to the form of the femoral bone pulley 1 ' of each healthy person
Average molecular parameters measure：It measures the width W1 ' and height D1 ' (i.e. W1 and D1 shown in Fig. 4) of human femur under loading coaster 1 ', slide
The minimum point of rut to entocondyle and the vertex line of external condyle vertical range H1 (H i.e. shown in FIG. 1) and coaster ditch
Minimum point to entocondyle most edge horizontal distance W 3 ' and coaster ditch minimum point to external condyle most edge horizontal distance W 4 '
(W3 and W4 i.e. shown in FIG. 1).
Further, CT scan and graphics can be used when being measured to the width W1 ' of femoral bone pulley 1 ' and height D1 '
Simulation osteotomy is carried out to the femur 3 of healthy person as generation and editing and processing software (such as Mimics), as shown in fig. 6, wherein
Front view, side view and the sectional view of simulation osteotomy are respectively illustrated, the step of simulation osteotomy includes：Take 3 distal end of femur most
Condyle axis of the line AB as simulation osteotomy on big contour line between interior condyle and ectocondyle；Choose the minimum point of cortex on front side of condyle of femur
O is as simulation osteotomy point；It is intercepted along being parallel to condyle axis and carrying out simulation to femur by the straight line of simulation osteotomy point to be cut
Bone face；The width W1 ' and height D1 ' for measuring the osteotomy surface can be obtained the width W1 and height D1 of femoral bone pulley 1 '.
As shown in figure 8, measuring the form of the kneecap 2 ' of each healthy person including being measured to following parameter：Kneecap
2 ' length H2 ' (i.e. the length of patellar prosthesis 2), width W2 ' (i.e. the width of patellar prosthesis 2) and thickness D2 ' (i.e. patellar prosthesis
2 thickness) and the kneecap ridge 212 ' and the long axis 211 ' of kneecap 2 ' of kneecap 2 ' between angle α.
Further, according to the present invention, when building the threedimensional model of femoral bone pulley prosthese 1, it may include following steps：Root
According to the cooperation curved surface 11 of the corresponding average molecular parameters structure femoral bone pulley prosthese 1 of the femoral bone pulley 1 ' of gained so that entocondyle
111 and external condyle 112 connect respectively with 113 arc of coaster ditch with different curvature；Build the stationary plane of femoral bone pulley prosthese 1
12 so that fix 12 and be formed as including first surface 121, the first plane 122 and the second plane 123；In the first plane 122 and
A fixed column 13 is formed on the connecting line 15 of two planes 123, and two fixed columns 13 are symmetrically formed on first surface 121.It is excellent
The line of three fixed columns 13 is formed as equilateral triangle by selection of land, to improve stabilization of the femoral bone pulley prosthese 1 when fixed
Property, to be effectively improved Long-term therapy effect.It is further preferred that by positioned at the company of the first plane 122 and the second plane 123
The height of fixed column 13 in wiring 15 is built into more than positioned at two fixed columns 13 being symmetricly set on first surface 121
Highly, in favor of further increasing stability of the femoral bone pulley prosthese 1 when fixed.
In one preferred embodiment, when building the stationary plane 12 of femoral bone pulley prosthese 1, to femoral bone pulley prosthese
1 stationary plane 12 coats titanium-based HA coatings.
In another preferred embodiment, when building the threedimensional model of femoral bone pulley prosthese 1, further include：To stock
The edge of bone coaster prosthese 1 thins smoothing processing.The outer peripheral thickness of femoral bone pulley prosthese 1 is designed to be less than femur
The thickness in other regions of coaster prosthese 1, and the outer edge of femoral bone pulley prosthese 1 is formed as into smooth arcuation.It is set by this
It sets, can effectively avoid the stress concentration phenomenon that femoral bone pulley prosthese 1 generates in use, so as to increase femoral bone pulley vacation
The stability and reliability of the structure of body 1, meanwhile, it stretches function in the wrong to restoring human body patellofemoral joint face anatomical structure and knee joint and has
Good result.
According to the present invention, when building the threedimensional model of patellar prosthesis 2, including：According to the corresponding flat of the kneecap 2 ' of gained
The joint curved surface 21 (as shown in Figure 5) of equal structural parameters structure patellar prosthesis 2 so that the cutting under vertical view state of joint curved surface 21
Face is oval (ellipse should be understood as rough ellipse), and the section under state of facing is in asymmetrical parabola
Shape；The connecting pole 22 being connected for the sclerotin with human body is formed on the face opposite with joint curved surface 21 of patellar prosthesis 2.It is preferred that
The number on ground, the connecting pole 22 may be three, and the line of three connecting poles 22 is in isosceles triangle.
The production method of the kneecap stock prosthese of the present invention can carry out the kneecap stock of analogue measurement healthy person by using Imaging Method
Articular morphology relationship provides to the design of the form for the form of femoral bone pulley prosthese 1, fixed form and patellar prosthesis 2
Foundation.Specifically, come the femur to the patellofemoral joint of healthy person and kneecap part based on CT scan, using Mimics softwares
Three-dimensional reconstruction, simulation patellofemoral joint operation osteotomy and measurement surface parameter are carried out, to accurately analyze the normal kneecap of Chinese
The size of femoral joint, the normal kneecap stock of the Chinese by the way that healthy person to be carried out to different age group, different sexes and different heights
Joint anatomical data, to design the patellofemoral joint prosthese for the different model for meeting Chinese's bone feature.
It should be noted that unless otherwise indicated, technical term or scientific terminology used in this application should be this hair
The ordinary meaning that bright one of ordinary skill in the art are understood.
In the description of the present application, term " first ", " second " etc. are used for description purposes only, and should not be understood as instruction or
It implies relative importance or implicitly indicates the quantity of indicated technical characteristic.In the description of the present invention, " multiple " contain
Justice is two or more, unless otherwise specifically defined.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：Its according to
So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into
Row equivalent replacement；And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme should all cover in the claim of the present invention and the range of specification.Especially, as long as there is no knots
Structure conflict, items technical characteristic mentioned in the various embodiments can be combined in any way.The present invention does not limit to
In specific embodiment disclosed herein, but include all technical solutions fallen within the scope of the appended claims.
Claims (17)
1. a kind of patellofemoral joint prosthese, which is characterized in that including femoral bone pulley prosthese and patellar prosthesis, the femoral bone pulley prosthese
Include the entocondyle and external condyle positioned at the both sides of the femoral bone pulley prosthese, and connects the entocondyle and the external condyle
Coaster ditch, wherein the entocondyle and the external condyle are connect with different radius of curvature with the coaster ditch arc respectively,
So that the joint face that is collectively formed of the entocondyle, external condyle and the coaster ditch constitute for patellar prosthesis is matched matches
Curved surface is closed, the femoral bone pulley prosthese further includes being formed in the opposite with the cooperation curved surface of the femoral bone pulley prosthese and being used for
The stationary plane being connected with sclerotin is formed with fixation kit on the stationary plane, and the patellar prosthesis includes and the cooperation curved surface
Matched joint curved surface, ellipsoidal cross section of the joint curved surface under vertical view state, the section under state of facing is in
It is asymmetrical parabola shaped, it is formed for the sclerotin phase with human body on the face opposite with the joint curved surface of the patellar prosthesis
Connecting pole even.
2. patellofemoral joint prosthese according to claim 1, which is characterized in that the width of the femoral bone pulley prosthese and height
Ratio between 0.94 to 1.56.
3. patellofemoral joint prosthese according to claim 1, which is characterized in that the minimum point of the coaster ditch to the inside
The numberical range of the vertical range of the vertex line of condyle and the external condyle is between 5.1mm between 8.9mm.
4. patellofemoral joint prosthese according to claim 1, which is characterized in that the minimum point of the coaster ditch to entocondyle most
The minimum point of the horizontal distance at edge and the coaster ditch to the ratio between the horizontal distance at external condyle most edge between 0.835 to
Between 1.993.
5. patellofemoral joint prosthese according to claim 1, which is characterized in that the stationary plane of the femoral bone pulley prosthese includes
The line of maximum breadth upright projection of femoral bone pulley prosthese is formed by ridge on the stationary plane, the ridge is by the stationary plane
It is divided into first surface and second surface, wherein the area of the first surface is more than the area of the second surface, and it is described
Form obtuse angle between first surface and the second surface, the first surface is formed as plane, and the second surface includes the
One plane and the second plane, first plane are more than 180 ° with the angle that second plane is formed and are less than or equal to 270 °.
6. patellofemoral joint prosthese according to claim 5, which is characterized in that the fixation kit is included into the fixation
Three fixed columns on face and at least two fixinig plates, one in three fixed columns is arranged in first plane and institute
On the connecting line for stating the second plane, other two is symmetrical arranged on the first surface, at least two fixinig plates setting
In the marginal position of the stationary plane.
7. patellofemoral joint prosthese according to claim 1, which is characterized in that be formed with titanium-based HA on the stationary plane and apply
Layer.
8. patellofemoral joint prosthese according to claim 1, which is characterized in that the outer peripheral thickness of the femoral bone pulley prosthese
Degree is less than the thickness in other regions of the femoral bone pulley prosthese, and the outer edge of the femoral bone pulley prosthese is formed as smooth
Arcuation.
9. patellofemoral joint prosthese according to claim 1, which is characterized in that in the use state of the femoral bone pulley prosthese
Under, the coaster ditch of the femoral bone pulley of the line of the minimum point of the coaster ditch of the femoral bone pulley prosthese relative to human body script is most
It is formed with offset distance between the line of low spot.
10. patellofemoral joint prosthese according to claim 1, which is characterized in that on the joint curved surface of the patellar prosthesis
Angle between the line at peak and the long axis of the patellar prosthesis is between 8.86 ° to 11.46 °, the Patellar joint prosthese
Length numberical range between 34.16mm between 54.83mm, the numberical range of the width of the Patellar joint prosthese between
32.92mm between 50.32mm, the numberical range of the thickness of the Patellar joint prosthese between 18.83mm to 32.34mm it
Between.
11. a kind of production method making patellofemoral joint prosthese according to any one of claim 1 to 10, feature exist
In including the following steps：
The healthy person of multiple and different age brackets is divided so that in each age bracket in the healthy person of different age group
Including male's group and women group, different height groups is also included in each male's group and the women group；
Different groups of the femoral bone pulley of each healthy person and the form of kneecap are measured respectively, to obtain the healthy person of respective sets
Patellofemoral joint average molecular parameters；
The threedimensional model of corresponding femoral bone pulley prosthese and patellar prosthesis is built according to obtained average molecular parameters.
12. production method according to claim 11, which is characterized in that carried out to the form of the femoral bone pulley of each healthy person
Include that following average molecular parameters are measured when measurement：
Measure the vertex line of the width and height, the minimum point of coaster ditch to the entocondyle and external condyle of human femur under loading coaster
Vertical range and coaster ditch minimum point to the horizontal distance at entocondyle most edge and the minimum point of coaster ditch to external condyle
The horizontal distance at most edge.
13. production method according to claim 12, which is characterized in that carried out to the width and height of the femoral bone pulley
Simulation osteotomy is carried out to the femur of healthy person using CT scan and 3-D view generation and editing and processing software when measurement, the mould
The step of quasi- osteotomy includes：Take condyle of the line as simulation osteotomy on distal femur largest contours line between interior condyle and ectocondyle
Axis；The minimum point of cortex on front side of condyle of femur is chosen as simulation osteotomy point；It is cut along being parallel to the condyle axis and passing through the simulation
The straight line of bone point carries out simulation interception to obtain osteotomy surface to femur；Measure the width of the osteotomy surface and highly to obtain the stock
The width of bone coaster and height.
14. production method according to claim 11, which is characterized in that measured to the form of the kneecap of each healthy person
Including being measured to following parameter：
Angle between the kneecap ridge and the long axis of kneecap of the length of kneecap, width and thickness and kneecap.
15. production method according to claim 12, which is characterized in that in the three-dimensional mould for building the femoral bone pulley prosthese
When type, include the following steps：
The cooperation curved surface of the femoral bone pulley prosthese is built according to the corresponding average molecular parameters of the femoral bone pulley of gained so that institute
Entocondyle and the external condyle is stated to connect with the coaster ditch arc with different curvature respectively；
Build the stationary plane of the femoral bone pulley prosthese so that it includes the first surface that stationary plane, which is formed as, described first flat
Face and second plane；
A fixed column is formed on the connecting line of first plane and second plane, first plane with
The marginal position of second plane forms the fixinig plate, is symmetrically formed two fixed columns on the first surface.
16. manufacturing method according to claim 15, which is characterized in that in the three-dimensional mould for building the femoral bone pulley prosthese
When type, further include：Smoothing processing is thinned to the edge of the femoral bone pulley prosthese.
17. production method according to claim 14, which is characterized in that in the threedimensional model for building the patellar prosthesis
When, including：
The joint curved surface of the patellar prosthesis is built according to the corresponding average molecular parameters of the kneecap of gained so that the joint is bent
Ellipsoidal cross section of the face under vertical view state, the section under state of facing is in asymmetrical parabola shaped；
The connecting pole being connected for the sclerotin with human body is formed on the face opposite with the joint curved surface of the patellar prosthesis.
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Cited By (10)
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| CN109431659A (en) * | 2018-12-17 | 2019-03-08 | 北京爱康宜诚医疗器材有限公司 | Patellar prosthesis |
| CN109833121A (en) * | 2019-02-14 | 2019-06-04 | 重庆高新区生物智能制造研究院 | A kind of design method of patellar prosthesis |
| CN111772885A (en) * | 2020-08-20 | 2020-10-16 | 宁波市第六医院 | Partially replaced trapezium bone prosthesis and manufacturing method thereof |
| CN112617958A (en) * | 2020-11-28 | 2021-04-09 | 北京市春立正达医疗器械股份有限公司 | Novel thighbone condyle cuts bone subassembly |
| CN114206271A (en) * | 2019-08-01 | 2022-03-18 | 弗朗切斯科·萨迪勒 | Double-chamber knee joint prosthesis |
| CN114748216A (en) * | 2022-03-24 | 2022-07-15 | 北京市春立正达医疗器械股份有限公司 | Patellofemoral joint prosthesis with metal filling blocks |
| CN115177415A (en) * | 2022-09-14 | 2022-10-14 | 北京纳通医疗科技控股有限公司 | Humerus prosthesis |
| CN115919518A (en) * | 2023-03-15 | 2023-04-07 | 北京爱康宜诚医疗器材有限公司 | Femoral Head Surface Replacement Positioning Device |
| WO2023206614A1 (en) * | 2022-04-27 | 2023-11-02 | 杭州素问九州医疗科技有限公司 | Method and apparatus for determining trochlear groove curve of femur |
| CN114206271B (en) * | 2019-08-01 | 2024-09-24 | 弗朗切斯科·萨迪勒 | Double-chamber knee joint prosthesis |
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| CN109431659A (en) * | 2018-12-17 | 2019-03-08 | 北京爱康宜诚医疗器材有限公司 | Patellar prosthesis |
| CN109833121A (en) * | 2019-02-14 | 2019-06-04 | 重庆高新区生物智能制造研究院 | A kind of design method of patellar prosthesis |
| CN109833121B (en) * | 2019-02-14 | 2021-08-10 | 重庆熙科医疗科技有限公司 | Design method of patella prosthesis |
| CN114206271A (en) * | 2019-08-01 | 2022-03-18 | 弗朗切斯科·萨迪勒 | Double-chamber knee joint prosthesis |
| CN114206271B (en) * | 2019-08-01 | 2024-09-24 | 弗朗切斯科·萨迪勒 | Double-chamber knee joint prosthesis |
| CN111772885A (en) * | 2020-08-20 | 2020-10-16 | 宁波市第六医院 | Partially replaced trapezium bone prosthesis and manufacturing method thereof |
| CN112617958A (en) * | 2020-11-28 | 2021-04-09 | 北京市春立正达医疗器械股份有限公司 | Novel thighbone condyle cuts bone subassembly |
| CN114748216A (en) * | 2022-03-24 | 2022-07-15 | 北京市春立正达医疗器械股份有限公司 | Patellofemoral joint prosthesis with metal filling blocks |
| WO2023206614A1 (en) * | 2022-04-27 | 2023-11-02 | 杭州素问九州医疗科技有限公司 | Method and apparatus for determining trochlear groove curve of femur |
| CN115177415A (en) * | 2022-09-14 | 2022-10-14 | 北京纳通医疗科技控股有限公司 | Humerus prosthesis |
| CN115177415B (en) * | 2022-09-14 | 2023-01-20 | 北京纳通医疗科技控股有限公司 | Humerus prosthesis |
| CN115919518A (en) * | 2023-03-15 | 2023-04-07 | 北京爱康宜诚医疗器材有限公司 | Femoral Head Surface Replacement Positioning Device |
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