RU87078U1 - DEVICE FOR TREATMENT OF FRACTURE AND / OR FALSE JOINT OF THE FEMORAL NECK - Google Patents

Abstract

A device for treating a fracture and / or false joint of the femoral neck, containing a plate with teeth and screw holes, characterized in that it is provided with a spring, one end resting on the plate, a spongy screw with a spring strung on it and a bone cylindrical autograft for insertion into a bone cylindrical tunnel, while the screw is inserted through the middle hole into the plate, which is additionally fixed with screws in the trochanteric region.

Description

The utility model relates to medicine, in particular to traumatology and orthopedics, and can be used to create compression of a cylindrical bone graft to the femoral head while simultaneously pulling the proximal and distal fragments together.

Known fixer intended for surgical treatment of fractures of the surgical neck of the humerus, which contains a osseous plate with holes and teeth intended for insertion into the cancellous bone (see patent No. 2143862). The disadvantages of this design in case of a defect in the femoral neck (when the cut cylindrical transplant is shorter than the resulting tunnel) is that the creation of close contact between the graft and the surrounding bone is impossible and the graft cannot be implanted.

Known forks plate for osteosynthesis of tibial condyles fractures (see patent No. 2312634), consisting of a plate with teeth with which fragments are stabilized among themselves.

The disadvantages of this design is that the creation of dynamic compression for a long period is impossible due to the lack of a device in the form of a spring for pressing a cylindrical graft to the proximal fragment.

The objective of the claimed device is to improve the implantation of the graft by creating a permanent long-term compression in the system "femoral head - trochanteric part of the thigh - cylindrical graft".

The problem is solved in that a spongy screw through a middle hole in the plate is sequentially threaded onto a spring and a bone cylindrical autograft, inserted into a bone cylindrical tunnel and screwed into the proximal fragment (head and proximal part of the femoral neck) to approach the distal fragment and creating simultaneous rigid compression in the area of the false joint (fracture) and spring compression of the cylindrical autograft to the synthesized bones;

the plate is additionally fixed with screws in the spit region with the capture of both fragments.

The use of this device will allow performing surgical interventions when resorption of the femoral neck of the second degree, when there is a deficiency of bone substance when cutting a cylindrical autograft. Also, this device will reduce the morbidity and time of surgical intervention, since there will be no need to take an additional autograft (from the iliac wing). Thirdly, the spring creating a certain compression of the graft to the proximal fragment will not destroy this graft when the screw is screwed. Fourth, constant compression in the zone will allow the patient to be managed in the postoperative period without a plaster cast or to shorten the time of its use.

The claimed utility model is illustrated by drawings, in which are shown: figure 1 shows a plate; the figure 2 shows the method of application of this device, where 1 is the hip joint, 2 is the gap of the false joint (or fracture line) of the femoral neck, 3 is the bone cylindrical graft obtained from the trochanteric part and the rest of the femoral neck to the zone of the false joint, 4 is the plate, it rests against the bone with teeth, additionally fixed with screws through the pseudoarthrosis (fracture), 5 - spring creates simultaneous springy pressure on the cylindrical graft and plate, 6 - compression central spongy screw.

The device contains a plate 4 (figure 1) with teeth 7 and holes 8 for accommodating screws (figure 2). The spring (figure 2) is placed on the screw 6 and abuts at one end against the plate 4.

The device operates as follows. After a layer-by-layer approach to the trochanteric region, cutting and extraction of a bone cylindrical autograft from the trochanteric part and the femoral neck and preparation of the cylindrical mother bed in the proximal fragment (head and femoral neck), we form the system on the central spongy screw: “plate - spring - cylindrical transplant”. The resulting design "plate - spring - cylindrical transplant" is inserted into the tunnel until it stops and screw the screw into the proximal fragment until compression is created in the area of the pseudoarthrosis (fracture). Additionally, we introduce screws through other holes of the plate, if possible with additional compression of the pseudoarthrosis (fracture). Seams in layers to drainage.

Claims (1)

A device for treating a fracture and / or pseudoarthrosis of the femoral neck, containing a plate with teeth and screw holes, characterized in that it is provided with a spring, one end resting on the plate, a spongy screw with a spring strung on it and a bone cylindrical autograft for insertion into a bone cylindrical tunnel, while the screw is inserted through the middle hole into the plate, which is additionally fixed with screws in the trochanteric region.