A kind of lateral femoral condyle prosthesis suitable for female patient
Technical field
The utility model relates to orthopaedic prosthesis, and more particularly, the utility model relates to a kind of suitable for female patient
Lateral femoral condyle prosthesis.
Background technique
Femoral component is a kind of prosthese for knee prosthesis.After cutting off human femur under loading condyle lesion, it is installed on femur
Distally, instead of the function of condyle of femur.Femoral component has inner surface and the surface outer surface Liang Ge, and inner surface is used in conjunction with people's bone
Fixed, outer surface is used to exercise the function in joint, pads prosthese relative motion with patellar prosthesis and shin bone respectively, provides knee pass
The mobility of section.Femoral component in Vehicles Collected from Market is developed all in accordance with the anatomical shape of human femur under loading condyle, and anatomical data is adopted mostly
Male's knee joint femoral condyle is combined in, most of male patients are suitable for.
Femoral component used in Vehicles Collected from Market is mostly based on the anatomical data exploitation of male's condyle of femur, is suitable for most of
The condyle of femur anatomical structure of male patient, but it is not suitable for the condyle of femur anatomical structure of female patient.For example, by using identical solution
It cuts open mark and osteotomy is carried out to the condyle of femur of female patient, will appear femoral component prosthese pair after common femoral component prosthese is installed
The covering of patient femur's preartis and femur inward-outward direction is excessive, forms cantilever beam effect, influences the stress of femoral component prosthese
And it is fixed;Femoral component prosthese preartis is blocked up, causes patient preartis position during knee sprung nervous, mobility by
Limit;The angle Q is too small, influences the motion profile of kneecap, causes patellofemoral joint activity abnormal, influences kneecap activity and the femur portion of patient
The service life of part prosthese.
Utility model content
The utility model has designed and developed a kind of lateral femoral condyle prosthesis suitable for female patient, optimizes in lateral femoral condyle prosthesis
The width of preartis, the thickness of preartis, preartis outside and electrical path length before and after the prosthese on the outside of the first thigh, preartis inside and first
Electrical path length before and after osteotomy on the outside of thigh, the first thigh and second thigh mutually the internal-and external diameter width of separate side and
The angle the Q size that first thigh, the second thigh and link block are connect with tibial prosthesis face joint, can preferably adapt to women
Patient increases the mobility of femoral component.
Technical solution provided by the utility model are as follows:
A kind of lateral femoral condyle prosthesis suitable for female patient, be configured to in knee-joint prosthesis tibial prosthesis face and
The connection of facies articularis patellae articulated type, the lateral femoral condyle prosthesis include:
Preartis, outside is cambered surface, for connecting with the facies articularis patellae joint;And
First thigh and the second thigh, outside be it is arc-shaped and be disposed in parallel in it is ipsilateral, and with the preartis arc
Shape connection, forms U-shaped structure;
Link block connects mutually close first thigh and second thigh, and the link block is inwardly
Arc-shaped recess forms coaster ditch;
Wherein, first thigh, the second thigh and link block are connect with tibial prosthesis face joint;
Wherein, the width of the preartis be 41~46mm, the preartis with a thickness of 0.8~9mm;On the outside of the preartis with
Prosthese anteroposterior diameter on the outside of first thigh is 58~71.5mm;On the inside of the preartis and on the outside of first thigh
Osteotomy anteroposterior diameter is 53~70.5mm;Mutually the internal-and external diameter width far from side is 57 to first thigh with second thigh
~72mm;The angle Q that first thigh, the second thigh and link block are connect with tibial prosthesis face joint be 9 °~
10°。
Preferably, first thigh and second thigh include groove, are separately positioned on described
On the inside of one thigh and second thigh, for being connected and fixed with femur.
Preferably, the groove includes:
First groove, be separately positioned on first thigh and the preartis and second thigh and it is described before
On the inside of the junction of condyle, the bottom surface of first groove is inclined-plane;
Second groove is separately positioned on the inside of first thigh and second thigh, is located at described U-shaped
Structural base, second groove floor is horizontal plane, and is smoothly connected with first groove floor;
Third groove is separately positioned on recessed far from described first on the inside of first thigh and second thigh
Slot one end, the third groove floor is perpendicular, and is smoothly connected with second groove floor.
Preferably, the link block includes flange, is shaped on the inside of the link block, and the U-shaped knot is located at
Structure bottom, and it is horizontally disposed.
Preferably, the flange includes:
The heart in the flange is arranged in 4th groove.
Preferably, the 4th groove is one of rectangle and circle.
Preferably, the link block further include:
Thicken spine, setting on the inside of the link block and the preartis junction, and the thickening spine with it is described
First groove floor is parallel, and the thickening spine is smoothly connected with the flange.
Preferably, further includes:
First fixed groove is arranged at the thickening spine center;
Second fixed groove is arranged in described far from one end inside the link block for thickening spine.
Preferably, further includes:
Fixing glue to be cylindrical, and is fixed in second groove, for fixing the femur.
Preferably, further includes:
Card slot is separately positioned on first thigh with second thigh mutually far from side corresponding position.
It is described in the utility model the utility model has the advantages that
(1) lateral femoral condyle prosthesis provided by the utility model suitable for female patient, optimizes preartis in lateral femoral condyle prosthesis
Width, the thickness of preartis, on the outside of preartis with electrical path length before and after the prosthese on the outside of the first thigh, on the inside of preartis with the first thigh
Electrical path length before and after osteotomy on the outside of bone, the first thigh is with second thigh mutually far from the internal-and external diameter width and first of side
The angle the Q size that thigh, the second thigh and link block are connect with tibial prosthesis face joint can preferably adapt to women trouble
Person.
(2) compared with conventional femoral component, in the identical situation of femoral component anteroposterior diameter, female provided by the utility model
Property femoral component preartis position is thinner, avoids the anxiety of patellofemoral joint during knee sprung, increases femoral component
Mobility.
(3) compared with conventional femoral component, in the identical situation of femoral component anteroposterior diameter, female provided by the utility model
Property femoral component preartis and interior outside width it is narrower, can be avoided prosthese and form cantilever beam effect, while femur can be cut
Bone face forms better covering, enhances the fixed effect of prosthese, avoid as femoral component width it is excessive caused by interior outside pair
Ligament loss.
(4) compared with conventional femoral component, the angle femoral component Q provided by the utility model is bigger, can preferably adapt to
The patellar motion trace of female patient ontology increases knee articulation degree, avoids dislocation of the patella.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the lateral femoral condyle prosthesis described in the utility model suitable for female patient.
Fig. 2 is the structural schematic diagram of the lateral femoral condyle prosthesis described in the utility model suitable for female patient.
Fig. 3 is the scale diagrams of the lateral femoral condyle prosthesis described in the utility model suitable for female patient.
Fig. 4 is the scale diagrams of the lateral femoral condyle prosthesis described in the utility model suitable for female patient.
Specific embodiment
The following describes the utility model in further detail with reference to the accompanying drawings, to enable those skilled in the art referring to explanation
Book text can be implemented accordingly.
The utility model can there are many different forms to implement, and should not be construed as limited to again the implementation of this elaboration
Example, on the contrary, these embodiments are provided, so that the disclosure will be thorough and complete.In the accompanying drawings, for clarity, it can overstate
The size and relative size of big structure and region.
As shown in Figs 1-4, the utility model provides a kind of lateral femoral condyle prosthesis suitable for female patient, be configured to
Tibial prosthesis face and the connection of facies articularis patellae articulated type in knee-joint prosthesis, the lateral femoral condyle prosthesis includes: preartis 110,
Outside is cambered surface, for connecting with the facies articularis patellae joint;And first thigh 120 and the second thigh 130, outside
Side is arc-shaped and is disposed in parallel in ipsilateral, and connect with 110 arc of preartis, formation U-shaped structure;Link block 140 connects
Connect mutually close first thigh 120 and second thigh 130, the link block arc-shaped recess inwardly, shape
At coaster ditch 148;First thigh 120, the second thigh 130 and link block 140 and tibial prosthesis face joint
Connection.
The width a of the preartis is 41~46mm, and the thickness b of the preartis is 0.8~9mm;The preartis outside and institute
Stating the prosthese anteroposterior diameter c on the outside of the first thigh is 58~71.5mm;On the inside of the preartis and on the outside of first thigh
Osteotomy anteroposterior diameter d is 53~70.5mm;Mutually the internal-and external diameter width e far from side is first thigh with second thigh
57~72mm;The angle the Q α that first thigh, the second thigh and link block are connect with tibial prosthesis face joint is
9 °~10 °.
In the identical situation of condyle of femur anteroposterior diameter, the thickness of women femur preartis is than male's femur preartis thickness outside
Small 0.8mm, the small 1.3mm in inside;In the identical situation of condyle of femur anteroposterior diameter, in women condyle of femur boss ratio male's condyle of femur
The small 2mm of outer diameter;In the identical situation of condyle of femur anteroposterior diameter, condylar width is smaller than condylar width before male femur before women femur
3.5mm;In the identical situation of condyle of femur anteroposterior diameter, the women angle femur Q is 3 ° bigger than male.
First thigh 120 and second thigh 130 include groove, and it is big to be separately positioned on described first
130 inside of thigh bone 120 and second thigh, for being connected and fixed with femur.
The groove includes: the first groove 150, be separately positioned on first thigh 120 and the preartis 110 and
For second thigh 130 on the inside of the junction of the preartis 110, the bottom surface of first groove 120 is inclined-plane;Second is recessed
Slot 160 is separately positioned on 130 inside of first thigh 120 and second thigh, is located at the U-shaped structure
Bottom, 160 bottom surface of the second groove is horizontal plane, and is smoothly connected with 150 bottom surface of the first groove;Third groove 170,
It is separately positioned on separate described first groove, 150 one end of first thigh 120 and second thigh, 130 inside,
170 bottom surface of third groove is perpendicular, and is smoothly connected with 160 bottom surface of the second groove.
The link block 140 includes flange 141, is shaped in 140 inside of link block, is located at the U-shaped knot
Structure bottom, and it is horizontally disposed.The flange 141 includes: the 4th groove 142, is arranged at 141 center of flange.Described
Four grooves 142 are one of rectangle and circle.
The link block further include: thicken spine 143, setting is in the link block and 110 junction of preartis
Side, and the thickening spine 142 is parallel with 150 bottom surface of the first groove, the thickening spine 142 and the flange 140 are flat
Slip.It is provided centrally with the first fixed groove 144 in the thickening spine 143, in the separate thickening spine 143
140 inside one end of link block is provided with the second fixed groove 145.Fixing glue 146 to be cylindrical, and is fixed at described
In second groove 160.It can by the above structure of 140 inside of first set thigh bone 120, the second thigh 130 and link block
Resected femur avoids lateral femoral condyle prosthesis from being subjected to displacement or fall off.
Card slot 147, is separately positioned on first thigh 120 and 130 phase of the second thigh is corresponding far from side
Position is used cooperatively with instrument is squeezed into, for condyle of femur to be squeezed into human body.
Embodiment
The knee joint femoral condyle of 10 adult females is carried out CT scan and rebuild at random to form threedimensional model, utilizes femur
5 planes of condyle prosthese inner surface trim threedimensional model, trim out 5 Osteotomies, will be corresponding with condyle of femur size
Common lateral femoral condyle prosthesis and women lateral femoral condyle prosthesis be placed on corresponding Osteotomy, calculated separately using three-dimensional graphics software
The coverage rate of common lateral femoral condyle prosthesis and women lateral femoral condyle prosthesis to condyle of femur preartis and distal end.Calculate separately common condyle of femur
The matching degree for the preartis thickness that prosthese and women lateral femoral condyle prosthesis and condyle of femur threedimensional model are cut down.Test result such as 1 institute of table
Show.
1 test result of table
As shown in Table 1, women lateral femoral condyle prosthesis is to the coverage rate of women femur preartis and distal end and of preartis thickness
It is better than common lateral femoral condyle prosthesis with degree.
Compared with conventional femoral component, in the identical situation of femoral component anteroposterior diameter, women provided by the utility model
Femoral component preartis position is thinner, avoids the anxiety of patellofemoral joint during knee sprung, increases the work of femoral component
Dynamic degree.
Compared with conventional femoral component, in the identical situation of femoral component anteroposterior diameter, women provided by the utility model
Femoral component preartis and interior outside width are narrower, can be avoided prosthese and form cantilever beam effect, while can be to the osteotomy of femur
Face forms better covering, enhances the fixed effect of prosthese, avoids the interior outside pair as caused by femoral component width is excessive tough
Band loss.
Compared with conventional femoral component, the angle femoral component Q provided by the utility model is bigger, can preferably adapt to women
The patellar motion trace of patient's ontology increases knee articulation degree, avoids dislocation of the patella.
Lateral femoral condyle prosthesis provided by the utility model suitable for female patient, optimizes the width of preartis in lateral femoral condyle prosthesis
It spends, the thickness of preartis, electrical path length before and after the prosthese on the outside of preartis and on the outside of the first thigh, on the inside of preartis and outside the first thigh
Electrical path length before and after the osteotomy of side, the first thigh is with second thigh mutually far from the internal-and external diameter width and the first thigh of side
The angle the Q size that bone, the second thigh and link block are connect with tibial prosthesis face joint, can preferably adapt to female patient.
It is not only in the description and the implementation although the embodiments of the present invention have been disclosed as above
Listed utilization, it can be applied to various fields suitable for the present invention completely, for those skilled in the art,
Other modifications may be easily implemented, therefore without departing from the general concept defined in the claims and the equivalent scope, this reality
It is not limited to specific details and legend shown and described herein with novel.