CN104510523A - Cross-navicular cuneiform second tarsometatarsal joint back side plate - Google Patents

Abstract

The invention relates to the technical field of medical appliances, in particular to a cross-navicular cuneiform second tarsometatarsal joint back side plate. The back side plate comprises a back side plate near end, a back side plate far end and a back side plate body used for connecting the back side plate near end with the back side plate far end, wherein the back side plate near end, the back side plate far end and the back side plate body are integrally formed; a plurality of fixing holes used for fixing the back side plate to tarsal navicular bone, intermediate cuneiform bone and second metatarsal bone are formed in the back side plate. According to the back side plate provided by the invention, the anatomic design is adopted, so that the anatomical reduction is facilitated and the back side plate does not need to be pre-bent; the second cuneonavicular joint and the second tarsometatarsal joint are simultaneously fixed, so that the problem of post traumatic osteoarthritis easily caused by cartilage destruction of second tarsometatarsal joint surface easily caused by fixing methods such as screws is solved, and the problem of deformation of the fixing holes easily caused by breakage of the back side plate caused by stress concentration easily formed by bending the back side plate in a conventional second tarsometatarsal joint back side plate operation is solved.

Description

Across boat wedge second sole of the foot wedge joint dorsal plate

Technical field

The present invention relates to technical field of medical instruments, particularly relate to a kind of across boat wedge second sole of the foot wedge joint dorsal plate.

Background technology

Lisfrance joint, i.e. tarsometatarsal joints are the joints between front mesopodium.The i.e. joint that formed of first, second, third metatarsal basilar part and corresponding cubitale, and the 4th, the joint that formed of fifth metatarsal bone basilar part and cuboid.Tarsometatarsal joints participates in composition footstep planning longitudinal arch (first metatarsal and medial cuneiform bone), lateral longitudinal arch (the 5th metatarsal and cuboid) and middle crossbows (interior middle ectocuneiform bone and cuboid), plays an important role for the sufficient normal morphology of maintenance.Lisfranc joint injury and tarsometatarsal joints fracture-dislocation are a kind of intraarticular damage of broad sense.

The treatment of Lisfrance damage is the great challenge to orthopedist, also be the challenge to patient, existing employing second sole of the foot wedge joint screw fixing means, because screw is through the second sole of the foot wedge arthrodesis simultaneously, iatrogenic destruction second sole of the foot wedge articular surface cartilage, easily causes osteoarthritis after wound.

When tradition adopts the second sole of the foot wedge joint dorsal plate to carry out the process of sole of the foot wedge joint, healthcare givers, according to the skeleton profile of patient, carries out bending to dorsal plate, makes dorsal plate to be close to surface of bone.This processing method has a lot of limitation, and be first needs to carry out bending to dorsal plate in operation, adds operating time, increases operation risk; Next is that dorsal plate after bending easily forms stress and concentrates, dorsal plate is caused to rupture, also have the dorsal plate after bending that fixing hole can be caused to be out of shape, cause fixing insecure, make the notopleural loosening and slippage of postoperative easy generation, a second traditional sole of the foot wedge joint dorsal plate anti-pode wedge joint is fixed simultaneously, fixing insecure, is easily shifted.

Summary of the invention

The technical problem to be solved in the present invention is: in order to solve in prior art adopt that screw fixing means etc. is fixing easily can to the second sole of the foot wedge articular surface cartilage destruction, easily cause osteoarthritis after wound, traditional second sole of the foot wedge joint dorsal plate is adopted to need bending in art, dorsal plate after bending easily formed stress concentrate cause dorsal plate rupture and easily cause fixing hole be out of shape cause fixing insecure, the second simultaneously traditional sole of the foot wedge joint dorsal plate is only fixed the second sole of the foot wedge joint, fixes the problems such as insecure.The invention provides a kind of across boat wedge second sole of the foot wedge joint dorsal plate, this dorsal plate adopts anatomical form design, be convenient to anatomical reduction, without the need in art again to dorsal plate pre-bending, this dorsal plate fixes the second boat wedge joint and the second sole of the foot wedge joint simultaneously, not only solving the fixing meanss such as screw easily can to the second sole of the foot wedge articular surface cartilage destruction, easily cause osteoarthritis problem after wound, and solve in traditional second sole of the foot wedge joint dorsal plate art need bending easily formed stress concentrate cause dorsal plate to rupture, easily cause fixing hole to be out of shape and cause fixing the second insecure and traditional sole of the foot wedge joint dorsal plate to be only fixed the second sole of the foot wedge joint, fix the problems such as insecure.

The technical solution adopted for the present invention to solve the technical problems is:

A kind of across boat wedge second sole of the foot wedge joint dorsal plate, comprise integrated dorsal plate near-end, dorsal plate far-end and the dorsal plate plate body for connecting dorsal plate near-end and dorsal plate far-end, described dorsal plate is provided with several for dorsal plate being fixed on the fixing hole on navicular bone, intermediate cuneiform bone and second metatarsal bone.

Particularly, the geometry of space form of described dorsal plate and navicular bone, intermediate cuneiform bone and second metatarsal bone contact surface and first metatarsal and medial cuneiform bone configuration of surface match, namely the navicular bone configuration of surface in dorsal plate near-end and nearly second boat wedge joint matches, dorsal plate plate body and intermediate cuneiform bone configuration of surface match, and the second metatarsal bone configuration of surface in dorsal plate far-end and nearly second sole of the foot wedge joint matches.

Particularly, described dorsal plate far-end is provided with the sliding eye for bone interblock pressurization during the second sole of the foot wedge joint fusion.

Particularly, the fixing hole that is provided with of described dorsal plate plate body and dorsal plate far-end and sliding eye are one arrange and distribute.

As preferably, the fixing hole that described dorsal plate near-end is provided with is row's distribution.

As preferably, described dorsal plate near-end is provided with at least 2 fixing holes, and described dorsal plate plate is provided with at least 2 fixing holes with it.

As preferably, described dorsal plate far-end is provided with at least 1 fixing hole.

As preferably, in described fixing hole, be provided with female thread.

As preferably, described dorsal plate is rustless steel dorsal plate, pure titanium dorsal plate or carbon steel dorsal plate.

The invention has the beneficial effects as follows: the invention provides a kind of across boat wedge second sole of the foot wedge joint dorsal plate, this dorsal plate adopts anatomical form design, be convenient to anatomical reduction, without the need in art again to dorsal plate pre-bending, this dorsal plate fixes the second boat wedge joint and the second sole of the foot wedge joint simultaneously, not only solving the fixing meanss such as screw easily can to the second sole of the foot wedge articular surface cartilage destruction, easily cause osteoarthritis problem after wound, and solve in traditional second sole of the foot wedge joint dorsal plate art need bending easily formed stress concentrate cause dorsal plate to rupture, easily cause fixing hole to be out of shape and cause fixing the second insecure and traditional sole of the foot wedge joint dorsal plate to be only fixed the second sole of the foot wedge joint, fix the problems such as insecure, the sliding eye for bone interblock pressurization during the second sole of the foot wedge joint fusion that dorsal plate far-end is provided with, for joint fusion provides the stability of more leading and leaning on, dorsal plate design, fully according to the design of Asia human body anatomical curvature, makes fixing more firm, dorsal plate adopts high strength design, is convenient to early stage passive functions and takes exercise, dorsal plate adopts concealed edges design, and the stimulation to soft tissue, lower than dorsal plate face, all can be reduced in the head of a nail face of the screw of employing.

This dorsal plate both can be applied as bridge-type dorsal plate, also can as the application of fusion dorsal plate, when applying as bridge-type dorsal plate, dorsal plate is across the second boat wedge joint and the second sole of the foot wedge joint, be applicable to Lisfrance damage, allow the second boat wedge, fine motion between the second sole of the foot wedge articular surface, both articular surface cartilage had been retained, play again the effect of restriction joint motion, avoid the second traditional sole of the foot wedge joint screw fixing means to the first sole of the foot wedge articular surface cartilage destruction, reduce osteoarthritis incidence rate after wound, considerably increase the stability of internal fixtion during the second sole of the foot wedge joint fusion, improve fusion rate, when as the application of fusion dorsal plate, be applicable to sole of the foot midtarsal joints inflammation and pes cavus patient, hollow screw can be coordinated to fix, further enhanced stability.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the present invention is further described.

Fig. 1 is of the present invention across the notopleural structural representation in boat wedge second sole of the foot wedge joint.

In figure: 1. dorsal plate near-end, 2. dorsal plate far-end, 3. dorsal plate plate body, 4. fixing hole, 5. sliding eye, 6. contact surface.

Detailed description of the invention

In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present invention are described in a schematic way, and therefore it only shows the formation relevant with the present invention.

Embodiment 1

A kind of across boat wedge second sole of the foot wedge joint dorsal plate, its thickness is 1.8mm, employing rustless steel is made, comprise integrated dorsal plate near-end 1, dorsal plate far-end 2 and the dorsal plate plate body 3 for connecting dorsal plate near-end 1 and dorsal plate far-end 2, dorsal plate near-end 1 is provided with 3 fixing holes 4 being used for being fixedly connected with navicular bone, dorsal plate plate body 3 is provided with 2 fixing holes 4 being used for being fixedly connected with intermediate cuneiform bone, dorsal plate far-end 2 is provided with 1 fixing hole 4 being used for being fixedly connected with second metatarsal bone, dorsal plate far-end 2 is also provided with 1 sliding eye 5 for bone interblock pressurization during the second sole of the foot wedge joint fusion, dorsal plate and navicular bone, the geometry of space form of intermediate cuneiform bone and second metatarsal bone contact surface 6 and first metatarsal and medial cuneiform bone configuration of surface match, namely dorsal plate near-end 1 matches with the navicular bone configuration of surface in nearly second boat wedge joint, dorsal plate plate body 3 and intermediate cuneiform bone configuration of surface match, dorsal plate far-end 2 matches with the second metatarsal bone configuration of surface in nearly second sole of the foot wedge joint.。

This steel plate is the low incisura steel plate of anatomical form, during as the application operation of fusion dorsal plate, can rejecting articular cartilage after bone grafting, dorsal plate is positioned over side, instep, across the second boat wedge joint and the second sole of the foot wedge joint, use dorsal plate that the bone block after reset is fixing on normal anatomical position, three fixing holes 4 on dorsal plate near-end 1 are for fixing foot nut bone, two fixing holes 4 on dorsal plate plate body 3 are for fixing intermediate cuneiform bone, a fixing hole 4 on dorsal plate far-end 2 is done for fixing second metatarsal bone, a sliding eye 5 on dorsal plate far-end 2 is for bone interblock pressurization during the second sole of the foot wedge joint fusion.In order to avoid the incisura of postoperative steel plate or screw is too high, two kinds of screws of locking 2.7mm and non-locking 2.7mm can be selected.

With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content in description, must determine its technical scope according to right.

Claims (9)

1. one kind across boat wedge second sole of the foot wedge joint dorsal plate, it is characterized in that: comprise integrated dorsal plate near-end (1), dorsal plate far-end (2) and the dorsal plate plate body (3) for connecting dorsal plate near-end (1) and dorsal plate far-end (2), described dorsal plate is provided with several for dorsal plate being fixed on the fixing hole (4) on navicular bone, intermediate cuneiform bone and second metatarsal bone.

2. as claimed in claim 1 across boat wedge second sole of the foot wedge joint dorsal plate, it is characterized in that: the geometry of space form of described dorsal plate and navicular bone, intermediate cuneiform bone and second metatarsal bone contact surface (6) and first metatarsal and medial cuneiform bone configuration of surface match, namely dorsal plate near-end (1) matches with the navicular bone configuration of surface in nearly second boat wedge joint, dorsal plate plate body (3) and intermediate cuneiform bone configuration of surface match, and dorsal plate far-end (2) matches with the second metatarsal bone configuration of surface in nearly second sole of the foot wedge joint.

3. as claimed in claim 1 across boat wedge second sole of the foot wedge joint dorsal plate, it is characterized in that: described dorsal plate far-end (2) is provided with the sliding eye (5) for bone interblock pressurization during the second sole of the foot wedge joint fusion.

4. as claimed in claim 3 across boat wedge second sole of the foot wedge joint dorsal plate, it is characterized in that: the fixing hole (4) that described dorsal plate plate body (3) and dorsal plate far-end (2) are provided with and sliding eye (5) are arranged in one and distributed.

5. as described in any one of claim 1-4 across boat wedge second sole of the foot wedge joint dorsal plate, it is characterized in that: the fixing hole (4) that described dorsal plate near-end (1) is provided with in one row distribution.

6. as described in any one of claim 1-4 across boat wedge second sole of the foot wedge joint dorsal plate, it is characterized in that: described dorsal plate near-end (1) is provided with at least 2 fixing holes (4), described dorsal plate plate body (3) is provided with at least 2 fixing holes (4).

7. as described in any one of claim 1-4 across boat wedge second sole of the foot wedge joint dorsal plate, it is characterized in that: described dorsal plate far-end (2) is provided with at least 1 fixing hole (4).

8. as described in any one of claim 1-4 across boat wedge second sole of the foot wedge joint dorsal plate, it is characterized in that: described fixing hole is provided with female thread in (4).

9. as described in any one of claim 1-4 across boat wedge second sole of the foot wedge joint dorsal plate, it is characterized in that: described dorsal plate is rustless steel dorsal plate, pure titanium dorsal plate or carbon steel dorsal plate.