CN202397582U - Anatomical lock plate for posterolateral tibial plateau - Google Patents
Anatomical lock plate for posterolateral tibial plateau Download PDFInfo
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- CN202397582U CN202397582U CN 201120536304 CN201120536304U CN202397582U CN 202397582 U CN202397582 U CN 202397582U CN 201120536304 CN201120536304 CN 201120536304 CN 201120536304 U CN201120536304 U CN 201120536304U CN 202397582 U CN202397582 U CN 202397582U
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Abstract
The utility model relates to an anatomical lock plate for posterolateral tibial plateau, which comprises a horizontal part, a connection part and a longitudinal part. Through holes are reserved on the horizontal part, the connection part and the longitudinal part. The horizontal part is in a circular arc shape. The longitudinal part and the horizontal part are inclined inside to form an included angle. By using a shape more fit to bone surface and using screws to fix, the anatomical lock plate for posterolateral tibial plateau is convenient in use, maximal support and fixing intensity is reached, and operation quality is guaranteed.
Description
Technical field
This utility model belongs to technical field of medical, relates to a kind of medical anatomical form locking bone fracture plate, outside anatomical form locking bone fracture plate behind especially a kind of tibial plateau.
Background technology
Fracture of the tibial plateau is the treatment of the difficult point, particularly complicated fracture of the tibial plateau of orthopaedic trauma treatment always, and higher complication and disability rate are arranged.Fracture of the tibial plateau belongs to intra-articular fracture, requires to reach anatomical reduction, and is strong fixing.Especially with the splitting of os metastyloideum piece or when subsiding, traditional knee joint front side approach open reduction, often can not reach desired therapeutic effect by the inner fixed law behind the forward direction, occur resetting of second phase easily and lose and solid failure.At present in the clinical practice, increasing clinician supports through the knee joint rear side approach tibial plateau rear pillar fracture that resets, and adopts rear side to support the blade plate fixed method.
When fixedly rear pillar was fractured from knee joint rear side approach, various non-anatomical form internal fixation implants were widely used, and have all played the effect of certain support.The internal fixation implant of every doctor's use has nothing in common with each other.Existing multidigit scholar has adopted the limited contact Dynamic Compression Plate of 3.5mm (LC-DCP) respectively, has rebuild blade plate, 3.5mm or various fixed systems such as 4.5mm-T shape and cloverleaf pattern blade plate.These internal fixation implants all are general general inside-fixtures, can't intactly fit with the anatomic form of tibial plateau rear side, so surgical effect is not quite similar, the result can't unify to pass judgment on.Exactly because the needs in the treatment, we more and more clearly recognize, to the fracture of this specific type of tibial plateau rear pillar, still are the domestic exclusive anatomical form internal fixation implant that lacks in the world.
In addition, the locking fixation bone fracture plate is followed the Biological Principles of external fixation, does not rely on the frictional force between blade plate and skeleton.Therefore the influence to surface of bone and fracture end blood fortune certainly will reduce.Through the identical interlocking of screw nail tail screw thread with nail hole screw thread, between screw and blade plate, there is into angle stability, do not contact skeleton when allowing to place locking bone fracture plate fully, be to meet biological internal fixation system therefore.To metaphysis fracture, osteoporotic fracture, there is huge advantage in locking system on biomechanics.In essence, locking bone fracture plate still can be counted as subcutaneous external fixator, and just the distance between it and skeleton is shorter just more firm.
With outside bone surface morphological data behind the tibial plateau is to fracture outside the anatomical blade plate of basic engineering can improve behind the simple tibial plateau that is caused by wound or involve the fixed effect of posterolateral complicated fracture of the tibial plateau.In Chinese invention patent CN201010230592.8, a kind of crooked dissection type support locking bone fracture plate in tibia outside back that need not pre-bending is disclosed.But there are many major defects in this utility model in design.At first, because the outside exists this very important anatomical structure of capitulum fibulae, the existence of this structure to make general internal fixation implant when implanting, must tilt to place at a certain angle behind the tibial plateau, and can't reach the vertical property placement parallel with the tibia longitudinal axis.And the outside important vessel neuromechanism of tibia nearly section back does not allow internal fixation to implant the vertical property placement of blade plate yet.Secondly, outside podium level is limited behind the tibia, and that can't realize describing in this utility model is provided with the target of two dog holeses at its blade plate head; If two row's blade plates are set; It is very limited then to follow closely bore dia, certainly will the diameter of pedicle screw be reduced, thereby fixed effect is with big heavy discount.。Thereby this invention (CN201010230592.8) do not meet the actual anatomical features in the outside behind the tibial plateau completely, therefore can not provide effectively fixing.
Therefore, those skilled in the art is devoted to develop a kind of nearly section of tibia rear side anatomical features, outside anatomical form locking bone fracture plate behind outside bone surface form behind the tibial plateau, the more firm tibial plateau of fitting more of more meeting.
The utility model content
In view of the above problems, the purpose of this utility model provides a kind of nearly section of tibia rear side anatomical features, outside anatomical form locking bone fracture plate behind outside bone surface form behind the tibial plateau, the more firm tibial plateau of fitting more of more meeting.
Outside anatomical form locking bone fracture plate behind a kind of tibial plateau of this utility model; Comprise horizontal part, connecting portion and stringer portion; Said horizontal part, connecting portion and stringer portion interconnect successively, are equipped with through hole in said horizontal part, connecting portion and the stringer portion, and said horizontal part bending is circular arc; Plane, said stringer portion place is vertical with horizontal part circular arc cross section, is 55 ° ~ 62 ° angle between the centrage of said stringer portion and the said horizontal part circular arc cross section.
In a preferred embodiment of this utility model, the radius of said horizontal part circular arc cross section is 18 ~ 23mm, and central angle is 105 ° ~ 112 °.
In another preferred embodiment of this utility model; Be zigzag between on the said horizontal part and the vertical plane of circular arc cross section, connecting portion plane, place and the plane, stringer portion place, be 128 ° ~ 135 ° first angle between on the said horizontal part and vertical plane of circular arc cross section and the plane, connecting portion place; Be 135 ° ~ 142 ° second angle between said connecting portion plane, place and the plane, stringer portion place.
In another preferred embodiment of this utility model, the quantity of through hole is two to four on the said horizontal part.
In another preferred embodiment of this utility model, the hole axle of the through hole on the said horizontal part is arranged on the arc-shaped surface, is radial arrangement.
In another preferred embodiment of this utility model, through hole is circular threaded lock hole on the said horizontal part.
In another preferred embodiment of this utility model, the quantity of through hole is 1 on the said connecting portion, and the hole direction of principal axis tilts with respect to connecting portion.
In another preferred embodiment of this utility model, the quantity of through hole is two to four in the said stringer portion, and through hole is arranged along stringer portion bearing of trend in the said stringer portion, and the hole axle of through hole is vertical with stringer portion in the said stringer portion.
In another preferred embodiment of this utility model, through hole is a combined hole in said connecting portion and the stringer portion, and said combined hole is that unthreaded hole is with the warm hole of screwed hole.
In another preferred embodiment of this utility model, be 60 ° angle between said stringer portion's centrage and the horizontal part circular arc cross section.
Outside anatomical form locking bone fracture plate more meets the nearly section of tibia rear side anatomical features, fit behind tibial plateau outside bone surface form and utilize the screw locking fixing more behind the tibial plateau of this utility model; Easy to use; Reach the maximum support constant intensity, guaranteed the operation quality.
Description of drawings
Fig. 1 is the structural representation of an embodiment of this utility model;
Fig. 2 is the structural representation at horizontal plane of an embodiment of this utility model;
Fig. 3 be this utility model an embodiment at sagittal structural representation;
Fig. 4 is the structural representation at coronalplane of an embodiment of this utility model.
The specific embodiment
To combine accompanying drawing that this utility model is made concrete elaboration below.
At the horizontal plane described in this utility model is section parallel to the ground; Sagittal plane is meant that in user mode be left and right sides two parts and the section parallel with horizontal plane along the human body fore-and-aft direction with the blade plate rip cutting of this utility model; Coronalplane be meant with all vertical section of horizontal plane, sagittal plane.
What should explain is, indication is meant the direction that is shown when the blade plate of this utility model placed by Fig. 1 up and down in this utility model.
This utility model is based on that perfect proximal tibia dissects that contour curve comprises the bone surface morphological data of platform articular surface rear side and the applying bone surface more that proposes, follows the outside, tibia nearly section back anatomical features and convenient easy blade plate technical scheme more.This utility model is by means of CT scan and three-dimensional reconstruction image and corresponding radiographic measurement software is gathered and meter has been calculated the BIAO and BEN data of larger samples amount.Morphology is measured and research through the bone surface of normal Chinese's normal tibial proximal bone rear side of larger samples amount is carried out, and drawn: outside limbus corticalis mainly is rendered as arc structure at horizontal plane behind
tibial plateau.The about 20mm of back outer arc place radius of circle size, about 108 ° of circular arc central angle size;
is at sagittal plane; Proximal tibia rear side cortex form is clear and legible; Have two and significantly become angle, " Z " font of the similar half-twist of traveling.The 1st corner size is about 47 ° from top to bottom; About 40 ° of the 2nd corner size.And the data basis has proposed this utility model in view of the above.This utility model institute maintenance data achievement be published in comprehensive professional journals (Sun Hui, Luo Congfeng. the morphology of Chinese's normal tibial proximal bone rear side is measured. shanghai Medicine. 2008,31 (5): 335-338. < core periodical, statistics source periodical >).
As shown in fig. 1, outside anatomical form locking bone fracture plate comprises horizontal part 1, connecting portion 2 and stringer portion 3 behind a kind of tibial plateau of the embodiment of this utility model.Horizontal part, connecting portion and stringer portion is as shown in fig. 1 is connected from top to bottom successively.Be equipped with through hole in horizontal part 1, connecting portion 2 and the stringer portion 3.In addition, horizontal part 1 bending is circular arc, and plane, stringer portion 3 place is vertical with horizontal part 1 circular arc cross section, and is 55 ° ~ 62 ° angle between the centrage of stringer portion 3 and the horizontal part 1 circular arc cross section.
Outside anatomical form locking bone fracture plate more meets the nearly section of tibia rear side anatomical features, the outside bone surface form behind the tibial plateau of fitting more behind the tibial plateau of this utility model.Thereby in conjunction with fixed more stable.
Shown in Fig. 2 and Fig. 3, the blade plate of this utility model is a kind of locking fixation bone fracture plate, is equipped with through hole in its horizontal part 1, connecting portion 2 and the stringer portion 3.Wherein as shown in fig. 1, horizontal part 1 through hole is simple circular screw hole (in figure 11,12,13, shown in 14), and is combined hole in connecting portion 2 and the stringer portion 3.Blade plate is fixed in screw locking capable of using.
For another as shown in Figure 2; Because in the configuration of surface of tibial plateau; The back outside limbus corticalis of tibia condyle portion mainly is rendered as arc structure at horizontal plane, therefore, and as shown in Figure 2; Horizontal part 1 in the blade plate of this utility model has adopted circular shape on horizontal plane, with the outside behind the tibial plateau of fitting more.
In the preferred embodiment of this utility model, horizontal part circular arc cross section radius be 18 ~ 23mm, central angle is 105 ° ~ 112 °, preferred radii size is 20mm, central angle is 108 °, to adapt to most patients' skeletal shape.
As shown in Figure 3, on sagittal plane, be between the horizontal part 1 of a kind of blade plate of the preferred embodiment of this utility model, connecting portion 3 and the stringer portion 2 with tibia after the curved shape of outer side-to-side anastomosis.In use, as shown in Figure 3, be 65 ° angle between horizontal part 1 and the tibial plateau articular surface α.Be zigzag between horizontal part 1, connecting portion 3 and the stringer portion 2, be connected to first angle between horizontal part and the connecting portion, be 128 ° ~ 135 ° sizes; Be connected to second angle between said connecting portion and the stringer portion, be 135 ° ~ 142 ° sizes.Preferred first angle is that 133 °, second angle are 140 °.Horizontal part 1, connecting portion 2 and 3 in stringer portion are the crooked shape tibia of can better fitting, thereby make blade plate more firm.
As shown in figs. 1 and 4, on coronalplane, this utility model preferred embodiment stringer portion 3 and the horizontal part of blade plate between be 55 ° ~ 62 ° angle.Preferably be 60 ° inclination.Stringer portion 3 be on the coronalplane skewed reason be since behind proximal tibia on the coronalplane outside stopping of fibular head and last tibiofibular joint arranged, the important vessel neuromechanism is avoided in the stringer portion 3 of therefore the tilting outside behind the tibia of can better fitting simultaneously.
Shown in Fig. 1 and Fig. 2, the blade plate of the preferred embodiment of this utility model is provided with through hole (11,12,13,14) on horizontal part 1.Through hole (11,12,13,14) can supply screw etc. to pass and fixation bone fracture plate.Shown in Fig. 2 and Fig. 3, the hole axle of the through hole in this preferred embodiment (11,12,13,14) at grade, direction A is parallel with articular surface α.And preferably be radial arrangement, and be radial arrangement and can avoid screw collision cutting each other at tibial plateau sclerotin middle part, make that the blade plate locking is more firm.The hole shaft position is positioned at horizontal part sagittal plane mid point.Certainly, in other embodiments, the curved through hole of arranging in Different Plane can be set also, present embodiment does not limit this.
Larger-diameter articular surface in this utility model row's nail technology down can provide bigger screw fixedly to control strength.Be beneficial to the firm of blade plate.
Shown in Fig. 4, the connecting portion 2 of the preferred embodiment of this utility model is provided with a through hole 21, stringer portion 3 is provided with through hole 31,32,33,34.The metaphysis that through hole 21 can make screw the be fixed on tibia portion of dividing a word with a hyphen at the end of a line, the stable blade plate of living.Shown in Fig. 3, the hole direction of principal axis B of connecting portion through hole 21 is the line of connecting portion sagittal plane mid point and tibial plateau leading edge, and the through hole position is positioned at connecting portion sagittal plane mid point.As shown in Figure 3, can form with through hole 11,12,13 on the horizontal part 1, between 14 and intersect.So design makes screw that passes through hole 21 and the screw that passes through hole 11,12,13,14 cooperatively interact, the more stable blade plate of fixing.Certainly, in other embodiments, can use other directions, as long as can make blade plate fixing, present embodiment does not limit this yet.
In addition, as shown in Figure 4, the stringer portion 3 of the preferred embodiment of this utility model is provided with through hole 31,32,33,34, is positioned at the below of second angle, and vertically arrange with stringer portion on the edge.And as shown in Figure 3, the direction C of the hole axle of through hole 31,32,33,34 is vertical with blade plate.Through hole 31,32,33,34 makes screw pass the dried top of tibia, and cooperates with through hole 11,12,13,14 and through hole 21, and blade plate is fixed in locking.
In the blade plate of the embodiment of this utility model, the material of blade plate can be selected titanium alloy for use, thereby enough intensity can be provided.
More than the specific embodiment of this utility model is described in detail, but it is just as example, this utility model is not restricted to the specific embodiment of above description.To those skilled in the art, any equivalent modifications that this utility model is carried out with substitute also all among the category of this utility model.Therefore, impartial conversion and the modification under spirit that does not break away from this utility model and scope, done all should be encompassed in the scope of this utility model.
Claims (10)
1. outside anatomical form locking bone fracture plate behind the tibial plateau; It is characterized in that comprise horizontal part, connecting portion and stringer portion, said horizontal part, connecting portion and stringer portion interconnect successively; Be equipped with through hole in said horizontal part, connecting portion and the stringer portion; Said horizontal part bending is circular arc, and plane, said stringer portion place is vertical with horizontal part circular arc cross section, is 55 ° ~ 62 ° angle between the centrage of said stringer portion and the said horizontal part circular arc cross section.
2. outside anatomical form locking bone fracture plate is characterized in that the radius of said horizontal part circular arc cross section is 18 ~ 23mm behind the tibial plateau as claimed in claim 1, and central angle is 105 ° ~ 112 °.
3. outside anatomical form locking bone fracture plate behind the tibial plateau as claimed in claim 1; It is characterized in that; Be zigzag between on the said horizontal part and the vertical plane of circular arc cross section, connecting portion plane, place and the plane, stringer portion place, be 128 ° ~ 135 ° first angle between on the said horizontal part and vertical plane of circular arc cross section and the plane, connecting portion place; Be 135 ° ~ 142 ° second angle between said connecting portion plane, place and the plane, stringer portion place.
4. outside anatomical form locking bone fracture plate is characterized in that the quantity of through hole is two to four on the said horizontal part behind the tibial plateau as claimed in claim 1.
5. outside anatomical form locking bone fracture plate is characterized in that the hole axle of the through hole on the said horizontal part is arranged on the arc-shaped surface, is radial arrangement behind the tibial plateau as claimed in claim 4.
6. like outside anatomical form locking bone fracture plate behind claim 1, the 4 or 5 described tibial plateaus, it is characterized in that through hole is circular threaded lock hole on the said horizontal part.
7. outside anatomical form locking bone fracture plate is characterized in that the quantity of through hole is 1 on the said connecting portion behind the tibial plateau as claimed in claim 1, and the hole direction of principal axis tilts with respect to connecting portion.
8. outside anatomical form locking bone fracture plate behind the tibial plateau as claimed in claim 1; It is characterized in that; The quantity of through hole is two to four in the said stringer portion, and through hole is arranged along stringer portion bearing of trend in the said stringer portion, and the hole axle of through hole is vertical with stringer portion in the said stringer portion.
9. like outside anatomical form locking bone fracture plate behind claim 1, the 7 or 8 described tibial plateaus, it is characterized in that through hole is a combined hole in said connecting portion and the stringer portion, said combined hole is that unthreaded hole is with the warm hole of screwed hole.
10. outside anatomical form locking bone fracture plate is characterized in that behind the tibial plateau as claimed in claim 1, is 60 ° angle between said stringer portion's centrage and the horizontal part circular arc cross section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120536304 CN202397582U (en) | 2011-12-20 | 2011-12-20 | Anatomical lock plate for posterolateral tibial plateau |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120536304 CN202397582U (en) | 2011-12-20 | 2011-12-20 | Anatomical lock plate for posterolateral tibial plateau |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202397582U true CN202397582U (en) | 2012-08-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120536304 Expired - Lifetime CN202397582U (en) | 2011-12-20 | 2011-12-20 | Anatomical lock plate for posterolateral tibial plateau |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202397582U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102885645A (en) * | 2012-10-16 | 2013-01-23 | 储旭东 | Posterolateral tibial plateau condyle anatomical plate |
| CN103169534A (en) * | 2011-12-20 | 2013-06-26 | 上海市第六人民医院 | Back outer side anatomy type locking bone fracture plate for tibia plateau |
| CN106710414A (en) * | 2017-02-17 | 2017-05-24 | 姚忠宝 | Teaching model for tibial plateau fractures in department of osteology |
| CN107789045A (en) * | 2017-11-15 | 2018-03-13 | 张平 | The special internal fixation device of Hoffa fracture |
-
2011
- 2011-12-20 CN CN 201120536304 patent/CN202397582U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103169534A (en) * | 2011-12-20 | 2013-06-26 | 上海市第六人民医院 | Back outer side anatomy type locking bone fracture plate for tibia plateau |
| CN103169534B (en) * | 2011-12-20 | 2016-03-30 | 上海市第六人民医院 | Outside anatomical type locking plate after tibial plateau |
| CN102885645A (en) * | 2012-10-16 | 2013-01-23 | 储旭东 | Posterolateral tibial plateau condyle anatomical plate |
| CN106710414A (en) * | 2017-02-17 | 2017-05-24 | 姚忠宝 | Teaching model for tibial plateau fractures in department of osteology |
| CN107789045A (en) * | 2017-11-15 | 2018-03-13 | 张平 | The special internal fixation device of Hoffa fracture |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120829 |