CN215349376U - Locking plate for fixing distal comminuted fracture of femur - Google Patents
Locking plate for fixing distal comminuted fracture of femur Download PDFInfo
- Publication number
- CN215349376U CN215349376U CN202023328353.4U CN202023328353U CN215349376U CN 215349376 U CN215349376 U CN 215349376U CN 202023328353 U CN202023328353 U CN 202023328353U CN 215349376 U CN215349376 U CN 215349376U
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- locking plate
- cadre
- locking
- holes
- head
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- 210000000689 upper leg Anatomy 0.000 title claims abstract description 24
- 208000024779 Comminuted Fractures Diseases 0.000 title claims abstract description 18
- 230000000694 effects Effects 0.000 abstract description 8
- 208000010392 Bone Fractures Diseases 0.000 description 19
- 206010017076 Fracture Diseases 0.000 description 19
- 229910000831 Steel Inorganic materials 0.000 description 16
- 239000010959 steel Substances 0.000 description 16
- 206010016454 Femur fracture Diseases 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 210000000629 knee joint Anatomy 0.000 description 3
- 208000008924 Femoral Fractures Diseases 0.000 description 2
- 208000001132 Osteoporosis Diseases 0.000 description 2
- 208000006735 Periostitis Diseases 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000035876 healing Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 210000003460 periosteum Anatomy 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 206010070917 Eccentric fixation Diseases 0.000 description 1
- 238000005773 Enders reaction Methods 0.000 description 1
- 206010017088 Fracture nonunion Diseases 0.000 description 1
- 208000002565 Open Fractures Diseases 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 208000024248 Vascular System injury Diseases 0.000 description 1
- 208000012339 Vascular injury Diseases 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 230000001054 cortical effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002594 fluoroscopy Methods 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 210000000281 joint capsule Anatomy 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 210000001694 thigh bone Anatomy 0.000 description 1
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Abstract
The utility model relates to a locking plate for fixing distal femoral comminuted fracture, which comprises a locking plate body conforming to the anatomical form of the inner side of the distal femur, wherein the locking plate body is provided with a head part and a dry part, and the head part is provided with at least three first locking holes which are positioned on the same horizontal line and are sequentially distributed along the length direction of the head part; one end of the cadre is connected to the middle part of the edge of one side of the width direction of the head, one side of the cadre close to the head is defined as a near end, the opposite side is defined as a far end, a plurality of second locking holes are arranged on the near end of the cadre according to the sequence along the length direction of the cadre, a plurality of combination holes are arranged on the far end of the cadre according to the sequence along the length direction of the cadre, and the axial direction of the second locking holes and the axial direction of the combination holes are arranged in a non-parallel mode, so that good supporting and fixing effects are achieved for distal comminuted fracture of femur.
Description
Technical Field
The utility model relates to the field of medical instruments, in particular to a locking plate for fixing distal comminuted fracture of femur.
Background
The incidence rate of distal femur fracture is relatively low, and young patients with good bone quality are mostly subjected to high-energy injury at knee bending positions; and old patients often suffer from osteoporosis, and the distal femur is easy to fracture when the patients are injured by the osteoporosis. The operative treatment of distal femur fracture is suitable for displaced fracture, open fracture and fracture with vascular injury, and the treatment target is anatomical reduction of joint surface to recover normal axis of lower limb and early function exercise of knee joint. The treatment of distal femur fracture, especially AO-C3 fracture, is a major difficulty in clinical orthopedic treatment.
The fixing method of distal femur fracture mainly includes external fixing support, intramedullary nail and bone-knitting steel plate, etc. Fixing an external fixing bracket: the external fixing bracket can achieve rapid fixation of fracture under the condition of little additional injury, but satisfactory reduction of fracture in joints is difficult to achieve for C3 type comminuted fracture of the far end of the femur, and in addition, knee joints are often required to be fixed, so that the final fixing scheme using the external fixing bracket as the far end of the femur is not ideal, and therefore the external fixing bracket is often used as a temporary fixing measure. (II) intramedullary nail: the traditional elastic intramedullary nails such as Zickel supracondylar fixator, Ender nail, Rush nail and rectangular nail have poor fixing effect, more complications and are not suitable for B type and C type, the clinical application is less at present, the antegrade intramedullary nail can be used for A type fracture more than 5cm away from the articular surface, and the retrograde intramedullary nail can be used for most A type fracture and C1 and C2 type fracture within 4-5cm of intercondylar notch and distal femur fracture above knee joint prosthesis; in addition, the fixing moment of the intramedullary nail is reduced by nearly half compared with the steel plate. And (III) fixing the traditional steel plate by screws: the 95-degree steel plate is designed into a whole, the strength of the steel plate is enhanced, but the angle is fixed, so that the placing and positioning are difficult, the direction of inserting the condylar part is difficult to master, the angle cannot be changed after the condylar part is inserted, and the alignment of a fracture block is poor easily. (IV) locking the steel plate for fixing: the locking steel plate can obtain satisfactory curative effect on distal femoral fracture, but complications such as internal fixation failure, fracture nonunion and the like can occur on AO-C3 type fracture, and the operation failure rate of patients with medial cortical defects is obviously increased; the reason is that the single steel plate has insufficient fixing bending and torsion resistance, the radian of the far end of the femur is large, the single steel plate is eccentrically fixed, the eccentricity is large, and the possibility of fatigue fracture of the steel plate is increased rapidly under the action of repeated external force, so that internal fixation failure is caused. In addition, some students also propose that the double-steel-plate fixation can treat distal femoral fracture and obtain good clinical curative effect; biomechanics research proves that the double-steel plate has stronger biomechanics strength, is helpful for the early functional exercise of patients, has the effect of an inner splint, is fixed at the center by changing eccentric fixation, needs to shape the locking steel plate in the operation, ensures that the locking steel plate is fully attached to the thighbone as far as possible, prevents the obvious stress concentration phenomenon, but needs to use a certain number of locking screws for comminuted fracture, and has the risk of putting into a fracture line due to the fixed direction of the screws.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a locking plate for fixing distal femoral comminuted fracture, so as to realize good supporting and fixing effects on the distal femoral comminuted fracture.
The specific scheme is as follows:
a locking plate for fixing distal comminuted fracture of femur comprises a locking plate body conforming to the anatomical form of the inner side of the distal femur, wherein the locking plate body is provided with a head part and a dry part, and the head part is provided with at least three first locking holes which are positioned on the same horizontal line and are sequentially distributed along the length direction of the head part; one end of the cadre is connected to the middle part of the edge of one side in the width direction of the head, one side of the cadre, which is close to the head, is defined as a near end, the opposite side of the cadre is defined as a far end, a plurality of second locking holes are arranged on the near end of the cadre according to the sequence along the length direction of the cadre, a plurality of combining holes are arranged on the far end of the cadre according to the sequence along the length direction of the cadre, and the axial direction of the second locking holes and the axial direction of the combining holes are arranged in a non-parallel mode.
Furthermore, the outer side edge of the head part, which is far away from the dry part, is provided with a plurality of concave parts positioned between the adjacent first locking holes, and the concave parts are inwards concave towards the width direction of the head part.
Furthermore, a plurality of reconstruction groove pairs are arranged on the outer edge of the dry part in the width direction, each reconstruction groove pair is positioned between two adjacent second locking holes or between two adjacent combination holes or between the adjacent second locking holes and the combination holes, each reconstruction groove pair comprises a groove respectively positioned on two sides of the dry part in the width direction, and each groove is arranged in a concave manner along the width direction of the dry part.
Furthermore, a first Kirschner wire hole is formed in the joint of the head part and the trunk part.
Furthermore, a second Kirschner wire hole is formed in the end, far away from the head, of the dry part.
Further, the number of the first locking holes on the head portion is three or four.
Compared with the prior art, the locking plate for fixing the distal comminuted fracture of the femur provided by the utility model has the following advantages: the locking plate provided by the utility model can realize effective supporting and fixing effects on fixing comminuted fracture at the far end of the femur through the locking plate body arranged in an anatomical mode and the locking holes and the combination holes on the head and the trunk, can prevent the fracture from displacing again, and is beneficial to fracture healing because the periosteum is less stripped in the operation. The double-steel-plate-type fracture plate can be matched with a distal femur lateral locking plate for use, and the biomechanical fixing principle of double steel plates is applied to play an effective supporting role in distal femur comminuted fracture.
Drawings
Fig. 1 shows a schematic view of a locking plate in a first view direction.
Fig. 2 shows a schematic view of the locking plate in a second direction of view.
Fig. 3 shows a schematic view of the locking plate in a third direction of view.
Fig. 4 shows a schematic view of locking of the locking plate on the distal femur.
Detailed Description
To further illustrate the various embodiments, the utility model provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the utility model and, together with the description, serve to explain the principles of the embodiments. Those skilled in the art will appreciate still other possible embodiments and advantages of the present invention with reference to these figures. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.
The utility model will now be further described with reference to the accompanying drawings and detailed description.
As shown in fig. 1 to 4, the present embodiment provides a locking plate for fixing comminuted fracture of distal femur, the locking plate includes a plate-shaped locking plate body 10, the locking plate body 10 has a head portion 101 and a stem portion 102 integrally formed, wherein the length direction of the head portion 101 extends along a first direction, the length direction of the stem portion 102 extends along a second direction, and the stem portion 102 is connected to the middle of the head portion in the length direction, so that the head portion 101 and the stem portion 102 form a substantially T-shaped structure. Although the head portion 101 and the stem portion 102 are described as forming a substantially "T" shaped structure, the first direction and the second direction are not limited to be perpendicular, and they may be fixedly connected together in an acute angle or an obtuse angle, such as an obtuse angle of about 105 ° between the central axes of the head portion 101 and the stem portion 102 in the length direction in the present embodiment. The locking plate body 10 in this embodiment is produced and processed from a titanium alloy material.
The head part 101 of the locking plate body 10 has an anatomical form fitting the distal femur, and the trunk part 102 has an anatomical form fitting the femoral shaft, so that the locking plate body 10 supports the inner side of the distal femur, bending shaping in an operation is reduced, operation time is saved, and the risk of reducing the strength of a steel plate due to the bending shaping is avoided.
The head 101 of the locking plate body 10 is provided with at least three first locking holes 103 which are positioned on the same horizontal line, and the first locking holes 103 which are positioned on the same horizontal line can increase the coverage of the head 101, so that the distal femoral comminuted fracture can be stably supported and fixed, and comminuted small fracture pieces can be effectively fixed. In the present embodiment, the number of the first locking holes 103 on the head 101 is generally set to three or four in consideration of the size of the locking nail and the area of the distal end of the femur.
In this embodiment, the outer edge of the head 101 away from the trunk 102 has a plurality of concave portions 104 located between adjacent first locking holes 103, and the concave portions 104 are recessed toward the width direction of the head 101, so that the outer edge of the head 101 is a wave-shaped curve, thereby facilitating the adjustment and shaping of the head 101 during surgery and reducing irritation to the joint capsule.
In this embodiment, one side of the trunk portion 102 close to the head portion is defined as a proximal end, the other opposite side is defined as a distal end, the proximal end of the trunk portion 102 is provided with a plurality of second locking holes 105 sequentially arranged along the length direction thereof, the distal end of the trunk portion 102 is provided with a plurality of coupling holes 106 sequentially arranged along the length direction thereof, and the axial direction of the second locking holes 105 and the axial direction of the coupling holes 106 are non-parallel arranged with a certain included angle, that is, the locking nails locked in the corresponding second locking holes 105 and the coupling holes 106 are alternately fixed with a certain angle therebetween, so that the locking nails can be selectively pressed or locked and fixed according to the conditions in the operation, thereby achieving a better fixing effect.
In this embodiment, a plurality of reconstruction groove pairs 107 are disposed on the outer edge of the stem 102 in the width direction, each reconstruction groove pair 107 is located between two adjacent second locking holes 105 or between two adjacent combining holes 106 or between the adjacent second locking holes 105 and the combining holes 106, each reconstruction groove pair 107 includes a groove 1070 respectively located on both sides of the stem 102 in the width direction, and each groove 1070 is recessed along the width direction of the stem 102 to facilitate the adjustment and shaping of the stem 102 during surgery, so that the reconstruction groove pairs 107 can be more suitable for the affected part of the patient.
In this embodiment, the head 101 is provided with a first k-wire hole 108, the first k-wire hole 108 is located at the joint of the head 101 and the stem 102, and the first k-wire hole 108 can help to determine the depth and direction of the locking nail, avoid the locking nail from entering the articular surface by mistake, and reduce the repeated fluoroscopy during the operation.
In this embodiment, a second k-wire hole 109 is provided at the end of the stem 102 away from the head 101, and the second k-wire hole 109 helps to temporarily fix the locking plate body 10.
The locking plate provided by the embodiment can effectively fix comminuted fracture, can play an effective supporting role, can prevent the fracture from displacing again, and is less in periosteum stripping in the operation and beneficial to fracture healing. The double-steel-plate-type fracture plate can be matched with a distal femur lateral locking plate for use, and the biomechanical fixing principle of double steel plates is applied to play an effective supporting role in distal femur comminuted fracture.
While the utility model has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (6)
1. A locking plate for fixation of a distal comminuted fracture of a femur, comprising: the locking plate comprises a locking plate body which is in accordance with the anatomical form of the inner side of the distal femur, the locking plate body is provided with a head part and a dry part, and the head part is provided with at least three first locking holes which are positioned on the same horizontal line and are sequentially distributed along the length direction of the head part; one end of the cadre is connected to the middle part of the edge of one side in the width direction of the head, one side of the cadre, which is close to the head, is defined as a near end, the opposite side of the cadre is defined as a far end, a plurality of second locking holes are arranged on the near end of the cadre according to the sequence along the length direction of the cadre, a plurality of combining holes are arranged on the far end of the cadre according to the sequence along the length direction of the cadre, and the axial direction of the second locking holes and the axial direction of the combining holes are arranged in a non-parallel mode.
2. A locking plate according to claim 1, characterized in that: the outer edge of the head part far away from the dry part is provided with a plurality of concave parts positioned between adjacent first locking holes, and the concave parts are inwards concave towards the width direction of the head part.
3. A locking plate according to claim 1, characterized in that: the outer edge of the dry part in the width direction is provided with a plurality of rebuilding groove pairs, each rebuilding groove pair is positioned between two adjacent second locking holes or between two adjacent combination holes or between the adjacent second locking holes and the combination holes, each rebuilding groove pair comprises a groove respectively positioned on two sides of the dry part in the width direction, and each groove is arranged along the width direction of the dry part in a concave mode.
4. A locking plate according to claim 1, characterized in that: a first Kirschner wire hole is formed in the joint of the head portion and the trunk portion.
5. A locking plate according to claim 1, characterized in that: the end of the stem part far away from the head part is provided with a second Kirschner wire hole.
6. A locking plate according to claim 1, characterized in that: the number of the first locking holes on the head part is three or four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023328353.4U CN215349376U (en) | 2020-12-30 | 2020-12-30 | Locking plate for fixing distal comminuted fracture of femur |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023328353.4U CN215349376U (en) | 2020-12-30 | 2020-12-30 | Locking plate for fixing distal comminuted fracture of femur |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215349376U true CN215349376U (en) | 2021-12-31 |
Family
ID=79620351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023328353.4U Expired - Fee Related CN215349376U (en) | 2020-12-30 | 2020-12-30 | Locking plate for fixing distal comminuted fracture of femur |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215349376U (en) |
-
2020
- 2020-12-30 CN CN202023328353.4U patent/CN215349376U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211231 |
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| CF01 | Termination of patent right due to non-payment of annual fee |