Treatment of Tarsometatarsal Joint Injury merges plate
Technical field
This utility model relates to medical instruments field, and especially a kind of Treatment of Tarsometatarsal Joint Injury merges 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.
At present clinically for the obvious Lisfranc damage of displacement, advocate open reduction, Titanic micro-plates.Internal fixation material mainly adopts screw, but screw constant intensity is inadequate and unstable, along with the lower functional exercise of postoperative patient heavy burden, easily occurs reset loss or screw extraction, finally causes operative failure.And classical Lisfranc screw needs trans-articular to fix, sole of the foot wedge joint and the thin-skinned bone injury of articulationes intercuneiformes can be increased the weight of further, osteoarthritis risk after increase post-surgical trauma.
Summary of the invention
The technical problems to be solved in the utility model is: in order to solve the fixing stability of first, second sequence Treatment of Tarsometatarsal Joint Injury and intensity difference problem, this utility model provides a kind of Treatment of Tarsometatarsal Joint Injury and merges plate, by adopting integrated design, the skeleton at each position will be fixed respectively with the first sole of the foot wedge articular lamella and the second sole of the foot wedge articular lamella, form the mechanism that an entirety is fixing, efficiently solve fixing stability and strength problem.
This utility model solves the technical scheme that its technical problem adopts:
A kind of Treatment of Tarsometatarsal Joint Injury merges plate, described fusion plate comprises the first sole of the foot wedge articular lamella, the second sole of the foot wedge articular lamella and the First Transition plate for connecting the first sole of the foot wedge articular lamella and the second sole of the foot wedge articular lamella, and described fusion plate is provided with several for fusion plate being fixed on the fixing hole in first metatarsal, medial cuneiform bone, second metatarsal bone and intermediate cuneiform bone.
Particularly, the geometry of space form of described first sole of the foot wedge articular lamella and medial cuneiform bone and first metatarsal contact surface and medial cuneiform bone and first metatarsal configuration of surface match, namely the contact surface of the first sole of the foot wedge articular lamella near-end and medial cuneiform bone configuration of surface match, and contact surface and the first metatarsal basilar part configuration of surface of the first sole of the foot wedge articular lamella far-end match; The geometry of space form of described first sole of the foot wedge articular lamella and medial cuneiform bone and first metatarsal contact surface and medial cuneiform bone and first metatarsal configuration of surface match, namely the contact surface of the second sole of the foot wedge articular lamella near-end and intermediate cuneiform bone configuration of surface match, and contact surface and the second metatarsal bone basilar part configuration of surface of the second sole of the foot wedge articular lamella far-end match.
As preferably, described first sole of the foot wedge articular lamella and/or the second sole of the foot wedge articular lamella are provided with the sliding eye for pressurizeing between metatarsal and cubitale.
As preferably, between described first sole of the foot wedge articular lamella and the second sole of the foot wedge articular lamella, be also connected with the second rebound.
Particularly, the two ends of described First Transition plate are connected with the first sole of the foot wedge articular lamella near-end and the second sole of the foot wedge articular lamella near-end respectively, and the two ends of described second rebound are fixedly connected with the middle part of the first sole of the foot wedge articular lamella with the second sole of the foot wedge articular lamella respectively.
Particularly, described first sole of the foot wedge articular lamella near-end is at least provided with two fixing holes for fixing medial cuneiform bone, first sole of the foot wedge articular lamella far-end is at least provided with two fixing holes for fixing first metatarsal, described second sole of the foot wedge articular lamella near-end is at least provided with two fixing holes for fixing intermediate cuneiform bone, and the second sole of the foot wedge articular lamella far-end is at least provided with two fixing holes for fixing second metatarsal bone.
Particularly, described first sole of the foot wedge articular lamella near-end is provided with two fixing holes for fixing medial cuneiform bone, and the first sole of the foot wedge articular lamella far-end is provided with two fixing holes for fixing first metatarsal; Described second sole of the foot wedge articular lamella near-end is provided with two fixing holes for fixing intermediate cuneiform bone, and the second sole of the foot wedge articular lamella far-end is provided with two fixing holes for fixing second metatarsal bone.
As preferably, one end place away from the first sole of the foot wedge articular lamella far-end of described first sole of the foot wedge articular lamella near-end is provided with a kink, described kink is formed after described second sole of the foot wedge articular lamella direction bending, the configuration of surface of described kink and medial cuneiform bone side matches, and described kink is provided with fixing hole.
Particularly, female thread is provided with in described fixing hole.
Particularly, described fusion plate is that rustless steel merges plate, pure titanium merges plate or carbon steel merges plate.
The beneficial effects of the utility model are: the Treatment of Tarsometatarsal Joint Injury that this utility model provides merges plate, employing anatomical form designs, be convenient to anatomical reduction, without the need to carrying out pre-bending to fusion plate in operation, save the time of operation, avoid bending on the impact of plate intensity, first, second sole of the foot wedge articular lamella near-end fixing hole is that space multistory type is fixed, to inner side, intermediate cuneiform bone has stronger hold, plate and screw designs fully take into account Asia human body anatomical curvature design, arch of foot anatomical form reconstruction in art is convenient in the fusion of multi-joint face, sliding eye is for bone interblock pressurization during sole of the foot wedge joint fusion, for joint fusion provides better stability, the screw head of a nail reduces the stimulation to soft tissue lower than the design of hone lamella and concealed edges design, and the design is conducive to the passive exercise of early postoperation, be applicable to the damage of sole of the foot instep, also sole of the foot midtarsal joints is applicable to scorching, pes cavus patient, articular surface cartilage can be retained, play again the effect of restriction joint motion, bone grafting after removal articular surface cartilage, sliding eye is adopted to realize pressurizeing between sole of the foot wedge articular surface, improve fusion rate, avoid the destruction that tradition adopts sole of the foot wedge joint screw fixing means anti-pode wedge articular surface cartilage, reduce the incidence rate of osteoarthritis after wound, the kink design at one end place away from the first sole of the foot wedge articular lamella far-end of the first sole of the foot wedge articular lamella near-end, when being fixed, after fixing hole squeezed into by screw, second cuneiform basilar part can be fixed on through medial cuneiform bone, further increase the fixed effect merging plate.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, this utility model is further illustrated.
Fig. 1 is the structural representation that this utility model Treatment of Tarsometatarsal Joint Injury merges plate.
In figure: 1. the first sole of the foot wedge articular lamella, 2. the second sole of the foot wedge articular lamella, 3. First Transition plate, 4. the second rebound one, 5. fixing hole, 6. sliding eye, 7. the first sole of the foot wedge articular lamella near-end, 8. the first sole of the foot wedge articular lamella far-end, 9. the second sole of the foot wedge articular lamella near-end, 10. the second sole of the foot wedge articular lamella far-end, 11. bending parts, 100. contact surfaces.
Detailed description of the invention
By reference to the accompanying drawings this utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present utility model are described in a schematic way, and therefore it only shows the formation relevant with this utility model.
As shown in Figure 1, a kind of Treatment of Tarsometatarsal Joint Injury merges plate, merging plate is that pure titanium merges plate, thickness of slab 1.8mm, merge plate and comprise the first sole of the foot wedge articular lamella 1 and the second sole of the foot wedge articular lamella 2 and the First Transition plate 3 for being connected the first sole of the foot wedge articular lamella near-end 7 and the second sole of the foot wedge articular lamella near-end 9, first sole of the foot wedge articular lamella near-end 7 is provided with the fixing hole 5 of two fixing medial cuneiform bones, first sole of the foot wedge articular lamella far-end 8 is provided with the fixing hole 5 of two fixing first metatarsals, second sole of the foot wedge articular lamella near-end 9 is provided with the fixing hole 5 of two fixing intermediate cuneiform bones, second sole of the foot wedge articular lamella far-end 10 is provided with the fixing hole 5 of two fixing second metatarsal bones, first sole of the foot wedge articular lamella 1 and the second sole of the foot wedge articular lamella 2 are respectively equipped with a sliding eye 6 for pressurizeing between metatarsal and cubitale.
In this embodiment, merge plate fully according to the design of Asia human body anatomical curvature, thickness of slab 1.8mm, female thread is provided with in fixing hole 5 for fixing fusion plate, the lock screw that fixing hole 5 can be 2.7mm with diameter or the non-locking screw that diameter is 2.7mm or the combination both it with the use of, the screw cap of the hold-down screw that fixing hole 5 configures is preferably lower than fusion plate, reduce the stimulation to soft tissue, avoid the incisura of Post operation fusion plate or hold-down screw too high, and adopt plate design and rustless steel, the high-strength materials such as pure titanium or carbon steel, be convenient to postoperative early stage passive exercise, merge plate and adopt concealed edges design, reduce the stimulation to soft tissue, being designed between metatarsal and cubitale of sliding eye 6 is pressurizeed, improve fusion rate and provide better stability for joint fusion.
In a kind of detailed description of the invention, the geometry of space form of the first sole of the foot wedge articular lamella 1 and medial cuneiform bone and first metatarsal contact surface 100 and medial cuneiform bone and first metatarsal configuration of surface match, namely the contact surface 100 of the first sole of the foot wedge articular lamella near-end 7 matches with medial cuneiform bone configuration of surface, and contact surface 100 and the first metatarsal basilar part configuration of surface of the first sole of the foot wedge articular lamella far-end 8 match; The geometry of space form of the first sole of the foot wedge articular lamella 1 and medial cuneiform bone and first metatarsal contact surface 100 and medial cuneiform bone and first metatarsal configuration of surface match, namely the contact surface 100 of the second sole of the foot wedge articular lamella near-end 9 matches with intermediate cuneiform bone configuration of surface, and contact surface 100 and the second metatarsal bone basilar part configuration of surface of the second sole of the foot wedge articular lamella far-end 10 match.
This embodiment adopts and merges the contact surface 100 of plate and the mating shapes of each bone surface contacted, and without the need to carrying out pre-bending to steel plate in art, greatly having saved operating time, having avoided bending on the impact of armor plate strength.
In a kind of detailed description of the invention, between the first sole of the foot wedge articular lamella 1 and the second sole of the foot wedge articular lamella 2, be also connected with the second rebound 4.
Between the lateral wall of two sliding eyes 6, increase by the second rebound 4, this is made to merge slab integral more firmly stable, also enhance the firmness of the second sole of the foot wedge articular lamella 2 and the first sole of the foot wedge articular lamella 1, shorten the recovery time after corrective surgery, fixing hole 5 coordinates hollow screw to fix, and further enhancing stability.
As preferably, the two ends of First Transition plate 3 are connected with the first sole of the foot wedge articular lamella near-end 7 and the second sole of the foot wedge articular lamella near-end 9 respectively, and the two ends of the second rebound 4 are fixedly connected with the middle part of the first sole of the foot wedge articular lamella 1 with the second sole of the foot wedge articular lamella 2 respectively.
In the design, the first sole of the foot wedge articular lamella 1 and the second sole of the foot wedge articular lamella 2 also may be used for the Treatment of Tarsometatarsal Joint Injury of second, third sequence, also go for the Treatment of Tarsometatarsal Joint Injury of other sequences.
In a kind of detailed description of the invention, one end place away from the first sole of the foot wedge articular lamella far-end 8 of the first sole of the foot wedge articular lamella near-end 7 is provided with a kink 11, kink 11 is formed after the second sole of the foot wedge articular lamella 2 direction bending, kink 11 matches with the configuration of surface of medial cuneiform bone side, and kink 11 is provided with fixing hole 5.
The kink 11 at one end place away from the first sole of the foot wedge articular lamella far-end 8 of the first sole of the foot wedge articular lamella near-end 7 designs, when being fixed, after fixing hole 5 squeezed into by screw, second cuneiform basilar part can be fixed on through medial cuneiform bone, further increase the fixed effect merging plate.
With above-mentioned according to desirable embodiment of the present utility model 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.