CN112807066B - Combined type fixing device for rebuilding and resetting radial bone and intramedullary and extramedullary - Google Patents
Combined type fixing device for rebuilding and resetting radial bone and intramedullary and extramedullary Download PDFInfo
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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
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/72—Intramedullary pins, nails or other devices
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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
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/72—Intramedullary pins, nails or other devices
- A61B17/7233—Intramedullary pins, nails or other devices with special means of locking the nail to the bone
- A61B17/725—Intramedullary pins, nails or other devices with special means of locking the nail to the bone with locking pins or screws of special form
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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
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8052—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded
- A61B17/8057—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded the interlocking form comprising a thread
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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
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8061—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates specially adapted for particular bones
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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
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/808—Instruments for holding or positioning bone plates, or for adjusting screw-to-plate locking mechanisms
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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
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
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Abstract
The invention discloses a radius head reconstruction and reduction intramedullary external combination type fixing device, which comprises an intramedullary arc plate arranged in a radius head intramedullary cavity, and an external intramedullary fixing plate arranged on the outer surface of a bone body and fixedly connected with the intramedullary arc plate, wherein the intramedullary arc plate is provided with longitudinal fixing holes and transverse fixing holes which are distributed in a staggered way, and screws penetrate through bones along the outer surface of a radius fracture part and are in threaded connection with the fixing holes and the transverse fixing holes on the intramedullary arc plate; the stability is enhanced, the function of enhancing and reconstructing each bone body is achieved, the movement of joints is not affected, the crushed radius head can be restored to the original physiological structure, so that the physiological reconstruction is realized, the function of the affected limb is reserved to the maximum extent, the patient can engage in heavy physical labor and antagonistic movement after recovering, and the problems of instability, pain, arthritis and the like caused by overlong or too short radius head prosthesis are avoided.
Description
Technical Field
The invention relates to the field of medical appliances, in particular to a combined type fixing device for reconstructing and resetting radial head and intramedullary and extramedullary.
Background
Radius bone fractures account for about 3% of all fractures, the most common fracture of adult elbows. The elbow joint consists of three mutually independent joints: the ulnar joint, the brachiocephalic joint and the upper ulnar joint. The radius bone serves as an important stabilizing structure against eversion, axial and posterolateral rotational stresses. When the radius bone fracture block is large, the concave-compression mechanism is destroyed, thereby affecting the stability and kinematics of the humeral radius joint. The stability of the device can be restored by incision and reduction of internal fixation or radius head replacement. However, the prior art and the fixing apparatus for comminuted fracture cannot achieve effective fixation. Previously, radial resection, eversion and axial instability have been the most common complications of radial resection. Resecting the radius bone can affect the stability of the elbow joint even with intact ligaments. At present, normal kinematics of the patient is usually restored by radius head replacement. If too long or too short, the radius bone prosthesis may cause instability, pain, arthritis, etc. Complications of the radial head replacement include humeral radial arthritis, loosening of the prosthetic stem, failure or fracture of the prosthesis, instability, dislocation, infection, and the like. The patient cannot engage in heavy physical labor and antagonistic exercises after replacement, and the behavior is greatly limited. Studies have shown that the radius bone is irregularly elliptical when measured in humans. It is important that the radius bone be offset to some extent relative to the radius neck, as most current designs of radius bone prostheses do not take this particular anatomy into account. In the prior art, the intramedullary fixation mode is also adopted for reconstruction and reduction, and if the intramedullary fixation device for fracture of the radius small skull with the application number of 202010885565.8 has the problems that the length of the fixing screw for the radius head is high in precision requirement, the fixing screw can collide when being too long and cannot meet the fixing requirement, even if the fixing screw is just right, more screws cannot be accommodated due to limited volume, and the fixing screw cannot be effectively fixed for cases with heavy crushing degree. 2. Because the structure in the radial marrow cavity and the structure in the radial small skull cavity are fixedly connected (such as splicing and fixing) and the radial marrow cavity and the radial small skull cavity are relatively narrow, and the radial head has a certain offset special structure relative to the radial neck, the fixedly connected structure not only ensures that the structure in the radial marrow cavity and the structure in the radial small skull cavity are limited at the installation position and the structure per se, but also realizes the butt joint fixation of the two structures in operation, is not easy to operate and greatly increases the operation difficulty. 3. Even if the accurate installation is completed, the fixing strength is not high, and the requirement of early function exercise cannot be met. 4. The original physiological structure cannot be completely restored, the situations of inclination, rotation, lateral movement and the like are unavoidable, and the problem of difficult adjustment in operation occurs. The technology has high requirements on each operation precision, so that the technology is difficult to popularize and use in clinic.
Disclosure of Invention
Therefore, the radial reconstruction and reduction intramedullary external combined type fixing device has strong structural stability, and can restore the crushed radial head to the original physiological structure, thereby realizing physiological reconstruction, having higher fixing strength, enabling the patient to practice elbow joint functions after operation, and greatly reducing the occurrence probability of elbow joint stiffness. The functions of the affected limbs are reserved to the maximum extent, and the patient can engage in heavy physical labor and antagonistic movement after recovering. The fixing device is simple to operate, convenient to install, low in requirement on installation technology, convenient to operate, capable of greatly shortening operation time, reducing infection risk, small in damage to surrounding tissues and better in prognosis.
The invention relates to a radius head reconstruction and reposition intramedullary and external combination type fixing device, which comprises an intramedullary arc plate arranged in a radius head intramedullary cavity, and an external intramedullary fixing plate arranged on the outer surface of a bone body and fixedly connected with the intramedullary arc plate, wherein the intramedullary arc plate is provided with longitudinal fixing holes and transverse fixing holes which are distributed in a staggered way, and screws penetrate through bones along the outer surface of a radius head fracture part and are in threaded connection with the fixing holes and the transverse fixing holes on the intramedullary arc plate;
further, the device also comprises an intramedullary reinforcement which is arranged in the radial neck stem medullary cavity and extends to the radial body medullary cavity, the intramedullary reinforcement is fixedly connected with the intramedullary external fixing plate through screws, and through holes are uniformly distributed on the intramedullary reinforcement.
Further, the intramedullary arc plate is an annular plate which is adapted to the cavity of the radius skull, the longitudinal fixing holes are uniformly distributed along the axial direction of the annular plate, the transverse fixing holes are uniformly distributed along the radial direction of the plate, and the longitudinal fixing holes and the transverse fixing holes are alternately distributed along the intramedullary arc plate in a staggered manner;
further, the intramedullary fixation plate is fixedly connected with the intramedullary reinforcement and the intramedullary arc plate through screws, the longitudinal fixation holes and the transverse fixation holes are internally provided with threads, and the screws for fixing the bone block and the screws for fixing the intramedullary fixation plate are respectively connected with the longitudinal fixation holes and the transverse fixation holes through the bone block and the intramedullary fixation plate through screws;
further, the tail end of the screw for fixing the bone block and the screw cap are of conical structures;
further, the intramedullary external fixation plate is an anatomic plate or a deformed plate;
further, the dissecting plate is L-shaped or T-shaped, and the dissecting plate positioned at the proximal end of the radius head and the intramedullary arc plate have the same curvature;
further, the intramedullary reinforcement is of a hollow tubular structure with through holes uniformly distributed on the surface;
further, the intramedullary reinforcement is made of a titanium mesh having diamond-shaped mesh with one of autologous cancellous bone, allogeneic bone, or artificial bone implanted therein;
further, the external marrow fixing plate is a titanium plate, the proximal end of a screw on the external marrow fixing plate radially penetrates through the outer cortex of the radius head to be fixed with the intramedullary arc plate, and the screw on the neck of the radius transversely penetrates through the bone layer and penetrates through the intramedullary reinforcement and contralateral cortex bone.
The beneficial effects of the invention are as follows: the invention discloses a radius head rebuilding and resetting intramedullary and extramedullary combined type fixing device, which is particularly suitable for rebuilding and resetting of radius head comminuted fracture, because the intramedullary and extramedullary combined type fixing mode is adopted, and the fixing piece positioned in the radius head marrow and the fixing piece positioned in the radius body marrow are mutually unconnected, and are fixed into a whole through a steel plate outside the bone body, the stability is enhanced, the function of enhancing and rebuilding each bone body is also realized, the movement of joints is not influenced, the comminuted radius head can be restored to the original physiological structure, thereby realizing physiological rebuilding, furthest retaining the function of affected limbs, and being capable of engaging heavy physical labor and antagonistic movement after the patient is recovered, and the problems of instability, pain, arthritis and the like caused by overlong or overlong of the radius head prosthesis are avoided.
Drawings
The invention is further described below with reference to the accompanying drawings and examples:
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the intramedullary arcuate plate structure of the present invention;
fig. 3 is a schematic structural view of the annular intramedullary arcuate plate of the present invention.
Detailed Description
FIG. 1 is a schematic diagram of the structure of the present invention; FIG. 2 is a schematic view of the intramedullary arcuate plate structure of the present invention; fig. 3 is a schematic structural view of the annular intramedullary arcuate plate of the present invention. As shown in the figure: the radial head reconstruction reduction intramedullary external combination type fixing device comprises an intramedullary arc plate 1 arranged in a radial head intramedullary cavity, an intramedullary reinforcement 2 arranged in a radial neck dry intramedullary cavity and extending towards the radial head intramedullary cavity, and an extraosseous titanium plate 3 arranged on the external surface of a bone body and fixedly connected with the intramedullary arc plate 1 and the intramedullary reinforcement 2 respectively, wherein through holes are uniformly distributed on the intramedullary reinforcement 2, the intramedullary arc plate 1 is provided with longitudinal fixing holes 11 and transverse fixing holes 12 which are distributed in a staggered manner, and a bone nail penetrates through bones along the external surface of a radial fracture part and is in threaded connection with the fixing holes and the transverse fixing holes 12 on the intramedullary arc plate 1; the intramedullary arc 1 is positioned in the intramedullary cavity of the radius bone, the transverse (radial) and longitudinal directions (radial axis direction (tangential direction along the arc, or vertical direction coaxial with the bone body)) of the intramedullary arc 1 are provided with fixing holes (longitudinal fixing holes 11 and transverse fixing holes 12), and the cross or cross-like fixing relationship is realized through the longitudinal fixing holes 11 and the transverse fixing holes 12, so that the effective and stable fixation of the comminuted fracture is facilitated. That is, the intramedullary arc 1 of the present invention is capable of fixation in both the transverse and longitudinal directions of the radius, and the fixation in the longitudinal direction is accomplished by implantation of countersunk screws along the concavity of the radius without affecting the motion of the humeral radius joint. The intramedullary reinforcement 2 is positioned in the diaphysis of the radius and is abutted against the neck trunk of the radius and has no fixed connection relationship with the intramedullary arc plate 1 in the cavity of the radius skull. The outside of the radius body is fixedly connected with an intramedullary arc-shaped plate 1 and an intramedullary reinforcement 2 respectively by adopting a steel plate, a bone nail passes through the steel plate and is fixedly connected with the intramedullary arc-shaped plate 1 in the cavity of the radius head and the intramedullary reinforcement 2 in the cavity of the radius body, and through holes are uniformly distributed on the intramedullary reinforcement 2 so as to facilitate the later growth with the radius into a whole, thereby promoting the healing of fracture. Therefore, the intramedullary arc plate 1 in the cavity of the radius skull, the intramedullary reinforcement 2 in the cavity of the radius diaphysis and the steel plate positioned outside the radius bone body integrally form a stable fixing structure, the stability is enhanced, the function of reinforcing and reconstructing each bone body is achieved, the movement of joints is not influenced, the crushed radius head can be restored to the original physiological structure, physiological reconstruction is realized, the function of affected limbs is reserved to the maximum extent, the patient can engage in heavy physical labor and antagonistic movement after recovery, and the problems of instability, pain, arthritis and the like caused by overlong or too short radius head prosthesis are avoided.
In this embodiment, the intramedullary arc plate 1 is an annular plate adapted to the radius skull cavity, the longitudinal fixing holes 11 are uniformly distributed along the axial direction of the annular plate, the transverse fixing holes 12 are uniformly distributed along the radial direction of the plate, and the longitudinal fixing holes 11 and the transverse fixing holes 12 are alternately distributed along the intramedullary arc plate 1 in a staggered manner; a "cross" or a fixation relationship resembling a "cross" is achieved by the longitudinal fixation holes 11 and the transverse fixation holes 12. When the fracture surface is larger, the annular plate is preferably adopted, the structure is more stable, and the integral structure formed by the annular plate and the radius head is stronger. The annular plate is preferably annular or approximately annular.
In this embodiment, the intramedullary fixation plate 3 is fixedly connected with the intramedullary reinforcement 2 and the intramedullary arc plate 1 by screws, the longitudinal fixation holes 11 and the transverse fixation holes 12 are internally provided with threads, the screws for fixing the bone block and the screws for fixing the intramedullary fixation plate 3 respectively penetrate through the bone block and the intramedullary fixation plate 3 and are screwed with the longitudinal fixation holes 11 and the transverse fixation holes 12, and the longitudinal and transverse fixation holes (11, 12) of the intramedullary arc plate 1 are internally provided with threads which are matched with the screws for fixing the bone block and the fixation screws of the intramedullary fixation plate 3.
In the embodiment, the screw tail end and the screw cap of the fixed bone block are of conical structures, so that the installation and the fixation are convenient, and the screw fixing connection mode of the intramedullary external fixation plate is locking or unlocking.
In this embodiment, the extramedullary fixing plate 3 is an anatomic plate or a deformed plate, preferably the anatomic plate is L-shaped or T-shaped, and the anatomic plate located at the proximal end of the radius head has the same curvature as the intramedullary arc plate 1, is more suitable for the physiological structure of the bone body, has higher fixing strength, and can be used for elbow joint function exercise after operation of a patient.
In this embodiment, the intramedullary reinforcement 2 is made of a titanium mesh with diamond-shaped mesh, and one of autologous cancellous bone, allogeneic bone or artificial bone is implanted in the titanium mesh, which is more beneficial to reconstruction and repair.
In this embodiment, the intramedullary reinforcement 2 has a cylindrical structure with uniformly distributed through holes; the columnar structure has stronger stability, can adapt to the marrow cavity of the bone body, is more beneficial to bone ingrowth and promotes fracture healing, and is more preferably a hollow tubular structure with through holes uniformly distributed on the surface by adopting the intramedullary reinforcement 2.
In this embodiment, the intramedullary reinforcement 2 is made of a titanium mesh with diamond-shaped mesh, and one of autologous cancellous bone, allogeneic bone or artificial bone is implanted in the titanium mesh, which is more beneficial to reconstruction and repair. In an axial sectional view, a single titanium mesh frame is diamond-shaped in radial view, so that the fixing screw is conveniently implanted, and if collision occurs, the titanium mesh can avoid the screw through slight deformation, so that the screw can be smoothly installed.
In this embodiment, the external intramedullary fixation plate 3 is a titanium plate, and the proximal ends of the screws on the external intramedullary fixation plate 3 radially penetrate through the outer cortex of the radius head to be fixed with the intramedullary arc plate 1, and the screws on the neck of the radius are transversely penetrated through the bone layer and penetrate through the intramedullary reinforcement 2 and the contralateral cortex bone. The structure stability is high, because the titanium mesh is adopted to manufacture the tubular hollow intramedullary reinforcement 2, the screw on the external titanium plate 3 of the bone body can transversely penetrate into the intramedullary reinforcement 2, the convenience of operation is enhanced, the position is more accurate, and the installation is more convenient. And the titanium mesh is used as a bone grafting material, so that the safety is higher, and the strength of a bone body can be effectively enhanced after the bone grafting material and the bone are grown into a whole.
The tail ends of the connecting screws of the intramedullary fixation plate 3, the intramedullary arc plate 1 and the intramedullary reinforcement 2 are conical, so that the intramedullary fixation plate is convenient to install and fix. The intramedullary arc 1, the intramedullary reinforcement 2, the intramedullary fixation plate 3, and the screws are made of a metallic material or absorbable material, such as metallic titanium.
The radial head reconstruction and reduction intramedullary and extramedullary combined type fixing device can be combined according to requirements for use:
if the crushing degree is not heavy and the neck of the radius is not defective, only the intramedullary arc plate 1 and the intramedullary external fixation plate 3 are combined and fixed, and the intramedullary reinforcement is not required to be installed. It can also be used for treating radius bone fracture, and the 2/3,1/2,1/3 of annular intramedullary arc plate 1 is combined with the intramedullary fixation plate 3.
The operation method of the combined type fixing device for rebuilding and resetting the radius head and intramedullary and extramedullary comprises the following steps: firstly, taking out crushed radius head fragments, splicing in vitro, temporarily fixing by using a fixing device after the splicing is completed, determining a safe area, cleaning a bone groove matched with an intramedullary arc plate 1 in the intramedullary cancellous bone of the radius head, placing the arc plate, fixing the bone blocks on the arc plate 1 by using screws, and placing screw caps outside the cortex bone under the articular cartilage. The intramedullary fixation plate 3 is fixedly connected with the radius bone and the intramedullary arc plate 1 in a safe area, then the intramedullary reinforcement 2 with proper diameter and length is selected, the intramedullary implant autologous cancellous bone is put into the radial marrow cavity after being compacted, the radius bone and the intramedullary fixation plate 3 are reset, and the intramedullary fixation plate 3, the radius bone and the intramedullary reinforcement 2 are fixed into a whole by using a locking screw after the reset is satisfied. The corresponding procedure for the intramedullary reinforcement 2 is omitted from the procedure described above when the patient is fractured without the intramedullary reinforcement 2.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.
Claims (6)
1. A combined type fixing device for reconstructing and resetting radial head and intramedullary and extramedullary, which is characterized in that: the intramedullary nail comprises an intramedullary arc plate arranged in a radial bone intramedullary cavity, and an intramedullary fixing plate arranged on the outer surface of the radial bone and fixedly connected with the intramedullary arc plate, wherein the intramedullary arc plate is provided with longitudinal fixing holes and transverse fixing holes which are distributed in a staggered manner, screws penetrate through bone along the outer surface of a radial fracture part and are in threaded connection with the fixing holes and the transverse fixing holes on the intramedullary arc plate, a cross-shaped fixing relationship is formed through the longitudinal fixing holes and the transverse fixing holes, the intramedullary nail further comprises an intramedullary reinforcing part arranged in the radial neck intramedullary cavity and extending towards the radial bone intramedullary cavity, the intramedullary reinforcing part is positioned in the radial bone diaphysis and is butted with the radial neck trunk part, the intramedullary reinforcing part and the intramedullary arc plate are not fixedly connected, the intramedullary reinforcing part and the intramedullary arc plate are fixedly connected through screws, through holes which are convenient for the later growth with the bone into a whole are uniformly distributed on the intramedullary reinforcing part, the intramedullary fixing plate is an anatomic plate which is L-shaped or T-shaped, the intramedullary reinforcing plate positioned at the proximal end of the radial neck has the same curvature anatomic structure, and the intramedullary reinforcing part is uniformly distributed on the surface of the radial arc plate.
2. The radius head reconstruction reduction intramedullary extramedullary combination fixation device of claim 1, wherein: the intramedullary arc-shaped plate is an annular plate which is adapted to the cavity of the radius skull, the longitudinal fixing holes are uniformly distributed along the axial direction of the annular plate, the transverse fixing holes are uniformly distributed along the radial direction of the plate, and the longitudinal fixing holes and the transverse fixing holes are alternately distributed along the intramedullary arc-shaped plate in a staggered way.
3. The radius head reconstruction reduction intramedullary extramedullary combination fixation device of claim 2, wherein: the intramedullary external fixation plate is fixedly connected with the intramedullary reinforcement and the intramedullary arc plate through screws, the longitudinal fixation holes and the transverse fixation holes are internally provided with threads, and the screws for fixing the bone block and the screws for fixing the intramedullary external fixation plate respectively penetrate through the bone block and the intramedullary external fixation plate and are in threaded connection with the longitudinal fixation holes and the transverse fixation holes.
4. A radius head reconstruction reduction intramedullary extramedullary combination fixation device according to claim 3, wherein: the tail end of the screw for fixing the bone block and the nut are in conical structures.
5. The radius head reconstruction reduction intramedullary extramedullary combination fixation device of claim 1, wherein: the intramedullary reinforcement is made of a titanium mesh having diamond-shaped mesh with one of autologous cancellous bone, allogeneic bone, or artificial bone implanted therein.
6. The radius head reconstruction reduction intramedullary extramedullary combination fixation device of claim 1, wherein: the intramedullary external fixation plate is a titanium plate, the proximal end of a screw on the intramedullary external fixation plate radially penetrates through the outer cortex of the radius head to be fixed with the intramedullary arc plate, and the screw on the neck of the radius transversely penetrates through the bone layer and penetrates through the intramedullary reinforcement and the contralateral cortical bone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011631752.XA CN112807066B (en) | 2020-12-30 | 2020-12-30 | Combined type fixing device for rebuilding and resetting radial bone and intramedullary and extramedullary |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011631752.XA CN112807066B (en) | 2020-12-30 | 2020-12-30 | Combined type fixing device for rebuilding and resetting radial bone and intramedullary and extramedullary |
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| CN112807066A CN112807066A (en) | 2021-05-18 |
| CN112807066B true CN112807066B (en) | 2023-05-12 |
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