CN107913101A - Based on virtual image and the fracture of neck of femur surgical planning method and system for combining tantalum nail - Google Patents
Based on virtual image and the fracture of neck of femur surgical planning method and system for combining tantalum nail Download PDFInfo
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- CN107913101A CN107913101A CN201711397923.5A CN201711397923A CN107913101A CN 107913101 A CN107913101 A CN 107913101A CN 201711397923 A CN201711397923 A CN 201711397923A CN 107913101 A CN107913101 A CN 107913101A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
- A61B34/10—Computer-aided planning, simulation or modelling of surgical operations
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
- A61B34/10—Computer-aided planning, simulation or modelling of surgical operations
- A61B2034/101—Computer-aided simulation of surgical operations
- A61B2034/105—Modelling of the patient, e.g. for ligaments or bones
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
- A61B34/10—Computer-aided planning, simulation or modelling of surgical operations
- A61B2034/107—Visualisation of planned trajectories or target regions
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
- A61B34/10—Computer-aided planning, simulation or modelling of surgical operations
- A61B2034/108—Computer aided selection or customisation of medical implants or cutting guides
Abstract
The invention discloses based on virtual image and the fracture of neck of femur surgical planning method and system for combining tantalum nail, method includes virtual image step, positive place value determines step and joint tantalum nail direction determining step；The joint tantalum nail direction determining step includes S31：The netted vascular distribution structure of femur concave interior is followed, vascular pattern by the labeled net structure of femur recess be nested into the fracture side neck of femur model of step S12 acquisitions in the femoral head that will be poured out coming；S32：Check the blood supply damage degree of the model after nested blood vessel, and determine joint tantalum nail into nail direction and into following closely angle.The present invention by fracture side by compared with the femur neck region of healthy side, judging the classification of fracture and degree of rotation in patient femur's fracture of cervical vertebra region, mainly including intercalation/separated length and the rotating angle of fracture；Determine blood supply damage state at the same time, determine joint tantalum nail into nail direction and into following closely angle.
Description
Technical field
The present invention relates to based on virtual image and the fracture of neck of femur surgical planning method and system for combining tantalum nail.
Background technology
Fracture of neck of femur refer to due to osteoporosis, the muscle group regression of hip week, it is slow in reacting or by severe trauma caused by
Neck of femur fracture.Position blood fortune is poor, if fracture processing not in time, it is inappropriate, can all cause nonunion or concurrent
Avascular necrosis of femoral head, traumatic arthritis, severely impacts life.
The form of femoral neck bone folding part is divided into embedded type and dislocation type fracture.The fracture line of this amphitypy fracture of neck of femur can table
It is now fine and close line and/or bright line.Fine and close fracture line represents that the bone trabecula of two fracture ends has overlapping intercalation, and bright fracture line is then
Mean that two fracture ends have separation.（1）Embedded type fracture of neck of femur is without obvious dislocation, the visible fuzzy dense bone of usual neck of femur
Broken line, local bone trabecula interrupt, and small angulation or depression occurs in local cortex of bone, and the outward turning deformity of femoral shaft is small obvious.It is this type of
Fracture belongs to compared with stable fracture.Due to the difference of external force effect when fracture occurs, different degrees of interior receipts, outer can occur for femoral head
Rotation.Lean forward or the angulation deformity of hypsokinesis.Such as occur that built-in end angulation deformity is more apparent, or the gradient of fracture line is larger, fracture end
There is separation in part, or when femoral shaft outward turning is obvious, prompts fracture unstable.（2）Dislocation type fracture of neck of femur is more typical, is also known as
Interior receipts type fracture of neck of femur.Two folding ends occur rotating and misplace.Femoral head retreats fracture end angled forward, the outer rotation direction of femoral shaft
Upper dislocation, fracture line separation are obvious.
Therefore before being performed the operation, it is desirable to provide a kind of method, this method pass through side and the healthy side neck of femur of fracturing
Region is compared, and judges the classification of fracture and degree of rotation in patient femur's fracture of cervical vertebra region, mainly including intercalation/separated length
Degree and the rotating angle of fracture.At the same time according to circumstances, determine blood supply damage state, determine joint tantalum nail into nail direction with
Into nail angle.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide based on virtual image and the neck of femur for combining tantalum nail
Fracture operation method of planning and system.
The purpose of the present invention is what is be achieved through the following technical solutions：Based on virtual image and the neck of femur for combining tantalum nail
Fracture operation method of planning, including virtual image step, positive place value determine step and joint tantalum nail direction determining step；Described
Virtual image step includes following sub-step：
S11：Obtain the original CT image of patient femur's fracture of cervical vertebra side and the original CT image of healthy side；
S12：The original CT image to side of fracturing and the original CT image of healthy side carry out three-dimensional modeling respectively；
The positive place value determines that step includes following sub-step：
S21：The fracture side and the femur three-dimensional modeling image of healthy side that virtual image step obtains respectively perform following operation：
S211：Find two bone mark points respectively on the model of three-dimensional reconstruction, described two bone mark points are big thick
Grand vertex P1, late-segmental collapse point P2；
S212：By greater trochanter vertex P1With late-segmental collapse point P2Connection, obtains A lines, and calculate A line lengths α；
S213：Extend A lines, in all sections perpendicular to A lines on femoral head, find one of a sections, it is described
A sections include femoral head concave point P3, the femoral head concave point P3For the small recess bone mark point on femoral head top；
S214：By greater trochanter vertex P1With femoral head concave point P3It is attached, obtains B lines；
S215：Calculate projection and the angle angle beta of B line of the B lines in a sections；
S22：According to the step S21 α value α -0/ β value β -0 of normal side obtained and α value α -1 and β value β -1 of wound side, meter
Calculating fracture side needs to adjust the actual value of normotopia；
The joint tantalum nail direction determining step includes following sub-step：
S31：The netted vascular distribution structure of femur concave interior is followed, it is recessed by femur that vascular pattern in next femoral head will be poured out
The labeled net structure at place be nested into the fracture side neck of femur model of step S12 acquisitions；
S32：Check the blood supply damage degree of the model after nested blood vessel, and determine joint tantalum nail into following closely direction and into nail
Angle.
Further, determine to include into nail direction and into the principle of nail angle in step S32：In neck of femur sagittal plane
Axis, and be maintained at as far as possible below epiphyseal line；The epiphyseal line is epiphysis rete arteriosum witness marker.
Further, late-segmental collapse point P2Searching mode be：Sphere is filled in femoral head, when in femur
Head outside carries out overlapping contrast with the sphere border, and nested area can reach N%, then to be fitted successfully, at this time by the sphere
The centre of sphere is as late-segmental collapse point P2。
Further, the nested area need to reach 95%.
Further, the original CT image is stored with .dicom forms.
Further, the three-dimensional modeling is built using Mimics softwares.
The present invention also provides the fracture of neck of femur surgery planning system followed closely based on virtual image with combining tantalum, including invent
As module, positive place value determining module and joint tantalum nail direction determining mould；The virtual image module includes：
Original CT image gathers submodule：For obtaining the original CT image of patient femur's fracture of cervical vertebra side and the original CT of healthy side
Image；
Three-dimensional reconstruction submodule：Three-dimensional is carried out for the original CT image to side of fracturing respectively and the original CT image of healthy side to build
Mould；
The positive place value determining module includes：
Three-dimensional modeling image procossing submodule：For respectively to the femur three-dimensional modeling image of fracture side and healthy side at
Reason, including：
Bone mark point finds unit：For finding two bone mark points respectively on the model of three-dimensional reconstruction, described two
A bone mark point is greater trochanter vertex P1, late-segmental collapse point P2；
A line length computing units：For by greater trochanter vertex P1With late-segmental collapse point P2Connection, obtains A lines, and calculate A lines
Length alpha；
Find unit in a sections：For extending A lines, in all sections perpendicular to A lines on femoral head, wherein one is found
A a sections, a sections include femoral head concave point P3, the femoral head concave point P3For the small recess bone on femoral head top
Index point；
B line acquiring units：For by greater trochanter vertex P1With femoral head concave point P3It is attached, obtains B lines；
Angle angle beta computing unit：For calculating projection and the angle angle beta of B line of the B lines in a sections；
Normotopia calculating sub module：α value α -0/ β value β -0 for the normal side that is obtained according to three-dimensional modeling image procossing submodule,
And α value α -1 and β value β -1 of wound side, calculating fracture side needs to adjust the actual value of normotopia；
The joint tantalum nail direction determining mould includes：
Blood vessel nesting submodule：For following the netted vascular distribution structure of femur concave interior, blood in next femoral head will be poured out
Tube model by the labeled net structure of femur recess be nested into the fracture side neck of femur of three-dimensional reconstruction submodule acquisition
Model；
Joint tantalum follows closely determination sub-module：For checking the blood supply damage degree of the model after nested blood vessel, and determine joint
Tantalum nail into nail direction and into nail angle.
Further, combine and determine to include into nail direction and into the principle of nail angle in tantalum nail determination sub-module：In femur
The central axes of neck sagittal plane, and be maintained at as far as possible below epiphyseal line；The epiphyseal line is epiphysis rete arteriosum witness marker.
Further, late-segmental collapse point P2Searching mode be：Sphere is filled in femoral head, when in femur
Head outside carries out overlapping contrast with the sphere border, and nested area can reach N%, then to be fitted successfully, at this time by the sphere
The centre of sphere is as late-segmental collapse point P2。
Further, the nested area need to reach 95%.
Further, the original CT image is stored with .dicom forms, and the three-dimensional modeling is soft using Mimics
Part is built.
The beneficial effects of the invention are as follows：The present invention is by the way that fracture side compared with the femur neck region of healthy side, is judged
The classification of fracture and degree of rotation in patient femur's fracture of cervical vertebra region, it is mainly rotating including intercalation/separated length and fracture
Angle；At the same time according to circumstances, determine blood supply damage state, determine joint tantalum nail into nail direction and into following closely angle；Realize base
In the joint tantalum nail treatment accurate operation plan method of planning of fracture of neck of femur of virtual image technology.
Brief description of the drawings
Fig. 1 is the method for the present invention flow chart.
Embodiment
Technical scheme is described in further detail below in conjunction with the accompanying drawings：
The present embodiment is suitable for the patient of wherein side fracture of neck of femur and other side neck of femur health.Although in normal condition
Under, the femur of both sides health is not identical, but side After femoral neck fracture wherein, and the neck of femur of healthy side can be with
As marker, easy to length/angle of post-operative normotopia and determining into nail position/orientation.
Based on virtual image and the fracture of neck of femur surgical planning method for combining tantalum nail, as shown in Figure 1, including virtual image
Step, positive place value determine step and joint tantalum nail direction determining step；
Wherein, virtual image step is used for the neck of femur model for generating preoperative healthy side and fracture side, and specifically, described is virtual
Image-forming step includes following sub-step：
S11：Obtain the original CT image of patient femur's fracture of cervical vertebra side and the original CT image of healthy side；In the present embodiment, may be used
It is acquired by by directly obtaining in a manner of the original CT image that .dicom forms preserve；
S12：The original CT image to side of fracturing and the original CT image of healthy side carry out three-dimensional modeling respectively；In the present embodiment
In, the software of three-dimensional reconstruction is Mimics.
Positive place value determine step be used for determine fracture side need the actual value of adjustment normotopia, the positive place value determines step
Including following sub-step：
S21：The fracture side and the femur three-dimensional modeling image of healthy side that virtual image step obtains respectively perform following operation：
S211：Find two bone mark points respectively on the model of three-dimensional reconstruction, described two bone mark points are big thick
Grand vertex P1, late-segmental collapse point P2；
Wherein, since greater trochanter vertex is not very it is clear that therefore its searching mode is repeated herein；And due to femoral head not
It is the spherical of standard, it is also difficult to the boundary of femoral head and neck of femur is defined, therefore in the present embodiment, late-segmental collapse point
P2Using filling with being found by the way of fitting：Specifically, sphere is filled in femoral head, when on the outside of femoral head with it is described
Sphere border carries out coincidence contrast, and nested area can reach 95%, then it is assumed that be fitted successfully, at this time using the sphere centre of sphere as
Late-segmental collapse point P2。
S212：By greater trochanter vertex P1With late-segmental collapse point P2Connection, obtains A lines, and calculate A line lengths α；
S213：Extend A lines, in all sections perpendicular to A lines on femoral head, find one of a sections, it is described
A sections include femoral head concave point P3, the femoral head concave point P3For the small recess bone mark point on femoral head top；Wherein just
The α values of normal side are α -0, and the α values of wound side are α -1；
S214：By greater trochanter vertex P1With femoral head concave point P3It is attached, obtains B lines；
S215：Calculate projection and the angle angle beta of B line of the B lines in a sections；The wherein β value of normal side is β -0, the β of wound side
It is worth for β -1；
S22：According to the step S21 α value α -0/ β value β -0 of normal side obtained and α value α -1 and β value β -1 of wound side, meter
Calculating fracture side needs to adjust the actual value of normotopia；Need the normotopia desired value of α -1 and β -1 being arranged to α -0, β -0, calculates
It needs the angle and length adjusted.Under normal conditions, including be cross-section value, coronal value and sagittal value.
Joint tantalum nail direction determining step be used for by blood fortune distribution be nested into carried out after model joint tantalum nail into follow closely direction
With into nail angle-determining, wherein, joint tantalum nail is used to induce and the purpose instead of bone tissue（Application No. can be used
The screw of CN201510712216.5 is realized）.
The joint tantalum nail direction determining step includes following sub-step：
S31：The netted vascular distribution structure of femur concave interior is followed, it is recessed by femur that vascular pattern in next femoral head will be poured out
The labeled net structure at place be nested into the fracture side neck of femur model of step S12 acquisitions；
S32：Check the blood supply damage degree of the model after nested blood vessel, and determine joint tantalum nail into following closely direction and into nail
Angle.
Wherein, fracture of neck of femur needle track and screw way design planning principle：The upper and lower support band sent from medial femoral circumflex artery
Artery is constant, variation is few, is the reliable sources of femoral head blood supply.Retinacular artery system（Upper and lower, preceding retinacular artery）In epiphysis
Line（Plate）Top forms rete vasculosum system on epiphysis, is connected to the main blood supply source of femoral head（Support band system, a recessed arterial system
System）, be blood supply of the femoral head main source.The presence of rete vasculosum integrative-structure in bone, After femoral neck fracture, if supporting to carry
Retain, then mean that body can continue to carry out compensatory confession to whole femoral head by " retaining retinacular artery-epiphysis net " path
Blood.Epiphyseal plate（Line）It is epiphysis rete arteriosum witness marker.Therefore epiphysis artery trunk in rete arteriosum on epiphysis and femoral head is damaged to reduce
The damage of wound, should try one's best when fixed makes inside-fixture drill and put and follow closely through epiphyseal line and to be cautiously maintained at epiphysis as far as possible close to center
Below line.
Therefore, in the present embodiment, determine to include into nail direction and into the principle of nail angle in step S32：In neck of femur
The central axes of sagittal plane, and be maintained at as far as possible below epiphyseal line；The epiphyseal line is epiphysis rete arteriosum witness marker.
Accordingly, the present invention also provides based on virtual image and the fracture of neck of femur surgery planning system for combining tantalum nail, bag
Include virtual image module, positive place value determining module and joint tantalum nail direction determining mould；The virtual image module includes：
Original CT image gathers submodule：For obtaining the original CT image of patient femur's fracture of cervical vertebra side and the original CT of healthy side
Image；
Three-dimensional reconstruction submodule：Three-dimensional is carried out for the original CT image to side of fracturing respectively and the original CT image of healthy side to build
Mould；
The positive place value determining module includes：
Three-dimensional modeling image procossing submodule：For respectively to the femur three-dimensional modeling image of fracture side and healthy side at
Reason, including：
Bone mark point finds unit：For finding two bone mark points respectively on the model of three-dimensional reconstruction, described two
A bone mark point is greater trochanter vertex P1, late-segmental collapse point P2；
A line length computing units：For by greater trochanter vertex P1With late-segmental collapse point P2Connection, obtains A lines, and calculate A lines
Length alpha；
Find unit in a sections：For extending A lines, in all sections perpendicular to A lines on femoral head, wherein one is found
A a sections, a sections include femoral head concave point P3, the femoral head concave point P3For the small recess bone on femoral head top
Index point；
B line acquiring units：For by greater trochanter vertex P1With femoral head concave point P3It is attached, obtains B lines；
Angle angle beta computing unit：For calculating projection and the angle angle beta of B line of the B lines in a sections；
Normotopia calculating sub module：α value α -0/ β value β -0 for the normal side that is obtained according to three-dimensional modeling image procossing submodule,
And α value α -1 and β value β -1 of wound side, calculating fracture side needs to adjust the actual value of normotopia；
The joint tantalum nail direction determining mould includes：
Blood vessel nesting submodule：For following the netted vascular distribution structure of femur concave interior, blood in next femoral head will be poured out
Tube model by the labeled net structure of femur recess be nested into the fracture side neck of femur of three-dimensional reconstruction submodule acquisition
Model；
Joint tantalum follows closely determination sub-module：For checking the blood supply damage degree of the model after nested blood vessel, and determine joint
Tantalum nail into nail direction and into nail angle.
More preferably, in the present embodiment, combine and determined in tantalum nail determination sub-module into nail direction and the principle into nail angle
Including：In the central axes of neck of femur sagittal plane, and it is maintained at as far as possible below epiphyseal line；The epiphyseal line is epiphysis rete arteriosum positioning mark
Will.
More preferably, in the present embodiment, late-segmental collapse point P2Searching mode be：Ball is filled in femoral head
Body, when carrying out overlapping contrast with the sphere border on the outside of femoral head, nested area can reach N%, then to be fitted successfully, this
When using the sphere centre of sphere as late-segmental collapse point P2。
More preferably, in the present embodiment, the nested area need to reach 95%.
More preferably, in the present embodiment, the original CT image is stored with .dicom forms, and the three-dimensional modeling is adopted
Built with Mimics softwares
The present invention is described by embodiment, but is not limited the invention, disclosed with reference to description of the invention
Embodiment other change, be such as readily apparent that for the professional person of this area, such change should belong to this hair
Within the scope of bright claim limits.
Claims (10)
1. based on virtual image and the fracture of neck of femur surgical planning method for combining tantalum nail, it is characterised in that：Including virtual image
Step, positive place value determine step and joint tantalum nail direction determining step；The virtual image step includes following sub-step：
S11：Obtain the original CT image of patient femur's fracture of cervical vertebra side and the original CT image of healthy side；
S12：The original CT image to side of fracturing and the original CT image of healthy side carry out three-dimensional modeling respectively；
The positive place value determines that step includes following sub-step：
S21：The fracture side and the femur three-dimensional modeling image of healthy side that virtual image step obtains respectively perform following operation：
S211：Find two bone mark points respectively on the model of three-dimensional reconstruction, described two bone mark points are big thick
Grand vertex P1, late-segmental collapse point P2；
S212：By greater trochanter vertex P1With late-segmental collapse point P2Connection, obtains A lines, and calculate A line lengths α；
S213：Extend A lines, in all sections perpendicular to A lines on femoral head, find one of a sections, it is described
A sections include femoral head concave point P3, the femoral head concave point P3For the small recess bone mark point on femoral head top；
S214：By greater trochanter vertex P1With femoral head concave point P3It is attached, obtains B lines；
S215：Calculate projection and the angle angle beta of B line of the B lines in a sections；
S22：According to the step S21 α value α -0/ β value β -0 of normal side obtained and α value α -1 and β value β -1 of wound side, meter
Calculating fracture side needs to adjust the actual value of normotopia；
The joint tantalum nail direction determining step includes following sub-step：
S31：The netted vascular distribution structure of femur concave interior is followed, it is recessed by femur that vascular pattern in next femoral head will be poured out
The labeled net structure at place be nested into the fracture side neck of femur model of step S12 acquisitions；
S32：Check the blood supply damage degree of the model after nested blood vessel, and determine joint tantalum nail into following closely direction and into nail
Angle.
Based on virtual image and combine the fracture of neck of femur surgical planning method of tantalum nail 2. according to claim 1, it is special
Sign is：Determine to include into nail direction and into the principle of nail angle in step S32：In the central axes of neck of femur sagittal plane, and to the greatest extent
Amount is maintained at below epiphyseal line；The epiphyseal line is epiphysis rete arteriosum witness marker.
Based on virtual image and combine the fracture of neck of femur surgical planning method of tantalum nail 3. according to claim 1, it is special
Sign is：The late-segmental collapse point P2Searching mode be：Sphere is filled in femoral head, when on the outside of femoral head and institute
State sphere border and carry out coincidence contrast, nested area can reach N%, then to be fitted successfully, at this time using the sphere centre of sphere as stock
Bone center point P2。
Based on virtual image and combine the fracture of neck of femur surgical planning method of tantalum nail 4. according to claim 3, it is special
Sign is：The nested area need to reach 95%.
Based on virtual image and combine the fracture of neck of femur surgical planning method of tantalum nail 5. according to claim 1, it is special
Sign is：The original CT image is stored with .dicom forms, and the three-dimensional modeling is built using Mimics softwares.
6. based on virtual image and the fracture of neck of femur surgery planning system for combining tantalum nail, it is characterised in that：Including virtual image
Module, positive place value determining module and joint tantalum nail direction determining mould；The virtual image module includes：
Original CT image gathers submodule：For obtaining the original CT image of patient femur's fracture of cervical vertebra side and the original CT of healthy side
Image；
Three-dimensional reconstruction submodule：Three-dimensional is carried out for the original CT image to side of fracturing respectively and the original CT image of healthy side to build
Mould；
The positive place value determining module includes：
Three-dimensional modeling image procossing submodule：For respectively to the femur three-dimensional modeling image of fracture side and healthy side at
Reason, including：
Bone mark point finds unit：For finding two bone mark points respectively on the model of three-dimensional reconstruction, described two
A bone mark point is greater trochanter vertex P1, late-segmental collapse point P2；
A line length computing units：For by greater trochanter vertex P1With late-segmental collapse point P2Connection, obtains A lines, and calculate A line lengths
Spend α；
Find unit in a sections：For extending A lines, in all sections perpendicular to A lines on femoral head, wherein one is found
A a sections, a sections include femoral head concave point P3, the femoral head concave point P3For the small recess bone on femoral head top
Index point；
B line acquiring units：For by greater trochanter vertex P1With femoral head concave point P3It is attached, obtains B lines；
Angle angle beta computing unit：For calculating projection and the angle angle beta of B line of the B lines in a sections；
Normotopia calculating sub module：α value α -0/ β value β -0 for the normal side that is obtained according to three-dimensional modeling image procossing submodule,
And α value α -1 and β value β -1 of wound side, calculating fracture side needs to adjust the actual value of normotopia；
The joint tantalum nail direction determining mould includes：
Blood vessel nesting submodule：For following the netted vascular distribution structure of femur concave interior, blood in next femoral head will be poured out
Tube model by the labeled net structure of femur recess be nested into the fracture side neck of femur of three-dimensional reconstruction submodule acquisition
Model；
Joint tantalum follows closely determination sub-module：For checking the blood supply damage degree of the model after nested blood vessel, and determine joint
Tantalum nail into nail direction and into nail angle.
Based on virtual image and combine the fracture of neck of femur surgery planning system of tantalum nail 7. according to claim 6, it is special
Sign is：Determine to include into nail direction and into the principle of nail angle in joint tantalum nail determination sub-module：In neck of femur sagittal plane
Central axes, and be maintained at as far as possible below epiphyseal line；The epiphyseal line is epiphysis rete arteriosum witness marker.
Based on virtual image and combine the fracture of neck of femur surgery planning system of tantalum nail 8. according to claim 6, it is special
Sign is：The late-segmental collapse point P2Searching mode be：Sphere is filled in femoral head, when on the outside of femoral head and institute
State sphere border and carry out coincidence contrast, nested area can reach N%, then to be fitted successfully, at this time using the sphere centre of sphere as stock
Bone center point P2。
Based on virtual image and combine the fracture of neck of femur surgery planning system of tantalum nail 9. according to claim 8, it is special
Sign is：The nested area need to reach 95%.
Based on virtual image and combine the fracture of neck of femur surgery planning system of tantalum nail 10. according to claim 9, it is special
Sign is：The original CT image is stored with .dicom forms, and the three-dimensional modeling is built using Mimics softwares.
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| CN201711397923.5A CN107913101B (en) | 2017-12-21 | 2017-12-21 | Femoral neck fracture operation planning method and system based on virtual imaging and combined tantalum nail |
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| CN201711397923.5A CN107913101B (en) | 2017-12-21 | 2017-12-21 | Femoral neck fracture operation planning method and system based on virtual imaging and combined tantalum nail |
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| CN107913101B CN107913101B (en) | 2020-01-24 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109632845A (en) * | 2019-01-11 | 2019-04-16 | 大连大学附属中山医院 | A kind of bone internal jugular vein blood vessel three-dimensional visualization method |
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| CN109632845A (en) * | 2019-01-11 | 2019-04-16 | 大连大学附属中山医院 | A kind of bone internal jugular vein blood vessel three-dimensional visualization method |
| CN110151281A (en) * | 2019-04-26 | 2019-08-23 | 南京医科大学附属口腔医院 | A kind of digitized manufacturing system method of condylar fracture nail maintenance surgical guide |
| CN110151281B (en) * | 2019-04-26 | 2021-11-12 | 南京医科大学附属口腔医院 | Digital manufacturing method of condylar fracture nail fixing operation guide plate |
| CN113576642A (en) * | 2020-03-10 | 2021-11-02 | 河北医科大学第三医院 | Reduction system for lower limb fracture, broken bone and rotation deformity |
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