CN216495591U - Special bone fracture plate for biplanar osteotomy of first metatarsal in hallux valgus - Google Patents
Special bone fracture plate for biplanar osteotomy of first metatarsal in hallux valgus Download PDFInfo
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- CN216495591U CN216495591U CN202122953403.6U CN202122953403U CN216495591U CN 216495591 U CN216495591 U CN 216495591U CN 202122953403 U CN202122953403 U CN 202122953403U CN 216495591 U CN216495591 U CN 216495591U
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Abstract
The utility model discloses a special bone fracture plate for biplanar osteotomy of a first metatarsus in hallux valgus, which comprises a near-end fixing part, a connecting part and a far-end fixing part which are integrally formed, and is characterized in that the connecting part is of a strip structure, the near-end fixing part and the far-end fixing part are of double-lug structures, the near-end fixing part is bent towards one side, and the far-end fixing part is bent towards the opposite side by taking the plane of the connecting part as a reference; the two-ear connecting line of the near-end fixing part is vertical to the long shaft of the connecting part, and the two-ear connecting line of the far-end fixing part is not vertical to the long shaft of the connecting part; the bone fracture plate is attached to the dissected shape of the first metatarsal proximal MPOW/LPCW osteotomy and the retrodin osteotomy, and related radians are reserved in the metatarsal base osteotomy expanding area and the distal inner side closed osteotomy area, so that the osteotomy stability is ensured, and the osteotomy correction accuracy and the clinical curative effect are improved.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to a bone fracture plate special for hallux valgus first metatarsal biplanar osteotomy.
Background
The incidence of hallux valgus in adults is reported clinically to be about 2-82%, and about 36% in adults over 65 years of age (1.Myerson M, Allon S, McGarvey W. Metatarocuneiform arm for management of hallux valves and metadata arms valves [ J ]. Foot Ankle,1992,13(3): 107-. Hallux valgus orthopaedic surgery currently reports over 130 surgical procedures, often requiring a combination of soft tissue and bone surgical orthopaedic, or two or more than two bone osteotomies.
For severe hallux valgus deformities, often three-dimensional, multiplanar deformities, the case changes often show an increase in the Hallux Valgus Angle (HVA), 1-2 metatarsal interallel angle (1-2IMA), and metatarsal distal joint face angle (DMAA). Chevoron osteotomy, which is currently used in clinic, can correct HVA and DMAA, but has poor capability of correcting 1-2IMA, and has larger 1-2IMA (>16 degrees) for severe hallux valgus, and the use of the Chevoron osteotomy is not recommended (MaXin, Wangxu, Wangzheng, etc.: thumb valgus therapist consensus [ J ]. China journal of medicine, 2017,97(35): 2726-; scarf osteotomies can correct HVA and part 1-2IMA, but not only fail to correct DMAA, but may also augment DMAA. For severe hallux valgus deformities, in order to correct three-dimensional, multiplanar deformities, a combination of techniques is often employed: either a Medial Proximal open-Wedge Osteotomy (MPOW) or a Medial Proximal closed-Wedge Osteotomy (LPCW) in combination with a distal Metatarsal Reverdin Osteotomy. HVA and 1-2IMA can be well corrected through MPOW/LPCW, and the first metatarsal head can be sunk to reduce the occurrence of the metatarsalgia; in combination with the Reverdin osteotomy, DMAA (Yangjie, Lianjun, et al. 1. metatarsal double osteotomy + Akin osteotomy for the treatment of adult severe hallux valgus deformity [ J ]. American International journal of trauma, 2017,016(004):34-36) can be completely corrected. The combined operation type is widely used in clinic and can be suitable for correcting various severe hallux valgus deformities.
In hallux valgus correction surgery, correction of the three-dimensional deformity of the first metatarsal is often required. The first metatarsal is morphologically irregular with large proximal and distal variability. Although MPOW/LPCW combined with Reverdin osteotomy is widely applied in clinic, a micro bone fracture plate for metatarsal fracture is mostly selected for bending, but the time is consumed in the operation, the strength of a steel plate is reduced after bending, the attaching effect with the bone surface is poor, and the phenomenon that the skin is extruded by internal fixing objects after the operation to influence the shoe wearing is frequently caused.
At present, no special bone fracture Plate documents or patent reports of the combined operation type (MPOW/LPCW combined with Reverdin Osteotomy) exist at home, and a small amount of bone fracture plates (Saragas, Nikiforos P.Proximal Opening-Wedge bone fracture family of the First Metatarsal basal open Osteotomy) are available at abroad, but the Reverdin Osteotomy cannot be fixed, and a bone fracture Plate or a hollow screw is required to fix the distal Osteotomy, so that the operation time and the treatment cost are increased.
Disclosure of Invention
The utility model provides a special bone plate for biplanar osteotomy of a hallux valgus first metatarsus, which aims to solve the problem that no special bone plate system for combined osteotomy exists in the current clinic.
In order to achieve the purpose, the technical scheme of the utility model is as follows:
the special bone fracture plate for the biplane osteotomy of the first metatarsal in hallux valgus comprises a proximal end fixing part, a connecting part and a distal end fixing part which are integrally formed, and is characterized in that the connecting part is of a strip-shaped structure, the proximal end fixing part and the distal end fixing part are of double-lug structures, the proximal end fixing part is bent towards one side, and the distal end fixing part is bent towards the opposite side, based on the plane of the connecting part; the two-ear connecting line of the near-end fixing part is vertical to the long axis of the connecting part, and the two-ear connecting line of the far-end fixing part is not vertical to the long axis of the connecting part; and the near-end fixing part, the connecting part and the far-end fixing part are all provided with locking screw holes, and the connecting part is provided with a sliding screw hole.
Further, the near-end fixing part is bent outwards to form an angle of 10-30 degrees.
Furthermore, the far-end fixing part is bent inwards to form an angle of 0-15 degrees.
Furthermore, an angle of 70-85 degrees is formed between a double-lug connecting line of the far-end fixing part and the long axis of the connecting part.
Furthermore, two locking screw holes are arranged at the two ears of the near-end fixing part, two locking screw holes are arranged at the two ears of the far-end fixing part, a sliding screw hole is arranged in the center of the connecting part, and at least one locking screw hole is arranged on each of the two sides of the sliding screw hole.
Furthermore, Kirschner wire holes are formed in the outer sides of the locking screw holes of the near-end fixing part and the far-end fixing part.
Further, the sliding screw hole is a rectangular long hole with a round angle, and the locking screw hole is a round hole.
Further, the sliding screw hole and the locking screw hole are both counter bores.
Furthermore, the external edges and corners of the bone fracture plate are all in a rounded corner structure.
Furthermore, the whole bone fracture plate is made of a titanium alloy material, and the surface of the bone fracture plate is treated by a surface titanium nitride coating.
Compared with the prior art, the utility model has the following beneficial effects:
the special bone fracture plate for the biplanar osteotomy of the hallux valgus first metatarsal in one embodiment of the utility model is attached to the dissected forms of the proximal ends MPOW/LPCW osteotomy of the first metatarsal and the retrodin osteotomy, and relevant radians are reserved in the metatarsal base osteotomy strutting area and the distal inner closed osteotomy area without bending in the operation and keeping the fixed strength of a steel plate; the operation time is shortened, and bleeding and postoperative swelling are reduced; reduce the interference of the extrusion stimulation of the built-in objects and the skin or soft tissues. Two screws are reserved at the near end of the metatarsal base osteotomy line and the far end of the metatarsal distal osteotomy line respectively, so that the osteotomy stability is ensured, the osteotomy orthopedic clinical curative effect is improved, and related complications are reduced.
Drawings
FIG. 1 is a first metatarsal anatomy data map
Fig. 2 is a front view of an embodiment of the present invention.
Fig. 3 is a side view of fig. 2.
In the figure, 1-a proximal fixing part, 2-a connecting part, 3-a distal fixing part, 4-a locking screw hole, 5-a sliding screw hole and 6-a Kirschner wire hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The applicant designs a special bone fracture plate applicable to combined osteotomy on the basis of combining the anatomical characteristics of the first metatarsal and a large number of inverted ankle osteoarthritis ankle upper osteotomy operations, so as to shorten the operation time, improve the clinical curative effect of osteotomy correction and reduce related complications. Fig. 1 is a first metatarsal anatomy data map.
Example 1:
referring to fig. 2 and 3, the special bone fracture plate for the biplanar osteotomy of the hallux valgus first metatarsal comprises a proximal fixing part 1, a connecting part 2 and a distal fixing part 3 which are integrally formed, wherein the connecting part 2 is of a strip structure, both the proximal fixing part 1 and the distal fixing part 3 are of a double-lug structure, and the proximal fixing part 1 is bent outwards at an angle of 10-30 degrees based on the plane of the connecting part 2, in the embodiment, the angle is 10 degrees. The distal fixing portion 3 is bent inward at an angle of 0 to 15 °, in this embodiment, 15 °; the connecting line of the two ears of the near end fixing part 1 is vertical to the long axis of the connecting part 2, the connecting line of the two ears of the far end fixing part 3 is not vertical to the long axis of the connecting part 2, and forms an angle of 70-85 degrees, in the embodiment, the angle is 80 degrees, and the connecting line is more attached to the inner side anatomical structure after the first metatarsal osteotomy is shaped; all set up locking screw hole 4 on near-end fixed part 1, connecting portion 2 and the distal end fixed part 3, be provided with slide screw hole 5 on the connecting portion 2.
Referring to fig. 2, in the present embodiment, two locking screw holes 4 are provided at both ears of the proximal fixing portion 1, and two locking screw holes 4 are also provided at both ears of the distal fixing portion 3; a slide screw hole 5 is provided in the center of the connecting portion 2, one locking screw hole 4 is provided on one side of the distal end of the slide screw hole 5, and two locking screw holes 4 are provided on one side of the proximal end of the slide screw hole 5.
In the embodiment, the bone fracture plate is designed according to the anatomical features of the Asian human body, the sliding screw hole 5 is a round-corner rectangular long hole, and has certain displacement allowance and inclination angle allowance when a screw is implanted, so that the bone fracture plate has stronger universality; the locking screw 4 hole is a round hole. The thickness of the bone plate is 1.5mm, the diameter of the locking screw hole is 2.0mm or 2.4mm, the hole length of the sliding screw hole is 9.0mm, and the width of the sliding screw hole is 2.0mm or 2.4 mm. In other embodiments, bone plates with other sizes and bending angle data can be selected and designed according to the body shape characteristics of the patient.
In the embodiment, the bone fracture plate is integrally made of a titanium alloy material, and the surface of the bone fracture plate is treated by the titanium nitride coating, so that the irritation reaction on nearby tissues can not be generated, and the effect of the operation and the recovery of a patient can be further promoted.
Example 2:
on the basis of the above embodiment, embodiment 2 shows an embodiment in which the slide screw hole and the lock screw hole are both counter bored holes, and the external edges and corners of the bone plate are both in a rounded structure; this is to avoid the appearance of sharp surfaces and to avoid the sharp edges causing injury to the patient or the doctor during the operation.
Example 3:
on the basis of the above embodiment, the embodiment 3 shows an embodiment in which a plurality of sets of kirschner wire holes 6 are respectively provided outside the locking screw holes 4 of the proximal end fixing portion 1 and the distal end fixing portion 3, and the kirschner wire holes 6 are used for temporary fixation of the bone plate.
The following describes the use of the bone plate in one embodiment of the utility model:
the first step is as follows: for patients with severe hallux valgus deformity, a conventional medial arc incision of the first metatarsophalangeal joint is formed, the proximal end of the conventional medial arc incision is exposed to the first metatarsophalangeal joint, and the distal end of the conventional medial arc incision is exposed to the first metatarsophalangeal joint;
the second step is that: cutting excessive joint capsule on the inner side of the first metatarsophalangeal joint, cleaning the proliferative osteophyte on the inner side of the distal end of the first metatarsus and loosening the soft tissue on the outer side;
the third step: using a small pendulum saw to first metatarsal proximal medial open wedge osteotomy (MPOW) or lateral closed wedge osteotomy (LPCW) according to a preoperative surgical design; a closed wedge osteotomy (Reverdin osteotomy) medial to the distal head-neck row of metatarsals;
the fourth step: correcting deformity by sinking the first metatarsal head about 2-3mm if necessary, and temporarily fixing the kirschner wire;
the fifth step: the special bone fracture plate for the biplanar osteotomy of the hallux valgus first metatarsus is placed, is temporarily fixed by a Kirschner wire hole on the bone fracture plate, and is determined to have good position by perspective;
and a sixth step: firstly, implanting locking screws into two locking screw holes 4 of the near-end fixing part; then, implanting cortical bone screws into the sliding screw holes 5 of the connecting parts; finally, the residual locking screws are orderly supplemented;
the seventh step: confirming the satisfactory position of the bone cutting and grafting bone and the bone plate through perspective, ensuring good stability, and removing the Kirschner wire temporarily fixed in the Kirschner wire hole 6; and (5) flushing and closing the wound.
The present invention has been described in terms of specific examples, which are provided to aid understanding of the utility model and are not intended to be limiting. For a person skilled in the art to which the utility model pertains, several simple deductions, modifications or substitutions may be made according to the idea of the utility model.
Claims (10)
1. The special bone fracture plate for the biplane osteotomy of the first metatarsal in hallux valgus comprises a proximal end fixing part, a connecting part and a distal end fixing part which are integrally formed, and is characterized in that the connecting part is of a strip-shaped structure, the proximal end fixing part and the distal end fixing part are of double-lug structures, the proximal end fixing part is bent towards one side, and the distal end fixing part is bent towards the opposite side, based on the plane of the connecting part; the two-ear connecting line of the near-end fixing part is vertical to the long axis of the connecting part, and the two-ear connecting line of the far-end fixing part is not vertical to the long axis of the connecting part; and the near-end fixing part, the connecting part and the far-end fixing part are all provided with locking screw holes, and the connecting part is provided with a sliding screw hole.
2. A bone plate for the biplanar osteotomy of the first metatarsal in hallux valgus according to claim 1, wherein said proximal anchoring portion is bent outwardly at an angle of 10 ° to 30 °.
3. A bone plate for the biplanar osteotomy of the first metatarsal in hallux valgus according to claim 1, wherein said distal anchoring portion is bent inwardly at an angle ranging from 0 ° to 15 °.
4. The bone plate for the biplanar osteotomy of the first metatarsal in hallux valgus according to claim 1, wherein an angle between a connecting line between two ears of the distal fixing portion and a long axis of the connecting portion is 70 ° to 85 °.
5. The bone plate for the biplanar osteotomy of the first metatarsal in hallux valgus according to any one of claims 2 to 4, wherein two locking screw holes are provided at both ears of the proximal holding portion, two locking screw holes are provided at both ears of the distal holding portion, a slide screw hole is provided at the center of the connecting portion, and at least one locking screw hole is provided at each of both sides of the slide screw hole.
6. The bone plate for the biplanar osteotomy of the first metatarsal in hallux valgus according to claim 5, wherein the locking screw holes of the proximal holding portion and the distal holding portion are provided with K-wire holes on the outer sides thereof.
7. The bone plate for the biplanar osteotomy of the first metatarsal in hallux valgus according to claim 6, wherein the slide screw hole is a rectangular slot with rounded corners and the locking screw hole is a round hole.
8. A bone plate for use in the biplanar osteotomy of the first metatarsal in hallux valgus according to claim 7, wherein said slide screw hole and said lock screw hole are both counter-bored.
9. A bone plate for the biplanar osteotomy of the first metatarsal in hallux valgus according to claim 8, wherein the external corners of the plate are rounded off.
10. The bone plate for the biplanar osteotomy of the first metatarsal in hallux valgus according to claim 9, wherein the bone plate is made of titanium alloy material and has a surface treated with a titanium nitride coating.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122953403.6U CN216495591U (en) | 2021-11-29 | 2021-11-29 | Special bone fracture plate for biplanar osteotomy of first metatarsal in hallux valgus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122953403.6U CN216495591U (en) | 2021-11-29 | 2021-11-29 | Special bone fracture plate for biplanar osteotomy of first metatarsal in hallux valgus |
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| CN216495591U true CN216495591U (en) | 2022-05-13 |
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| CN202122953403.6U Active CN216495591U (en) | 2021-11-29 | 2021-11-29 | Special bone fracture plate for biplanar osteotomy of first metatarsal in hallux valgus |
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