Low incisura inclined screw hole acetabulum back wall bone fracture plate

Abstract

The invention belongs to the medical equipment technical field, in particular to a low incisura inclined screw hole acetabulum back wall bone fracture plate. The fracture bone plate is composed of a plate body and a screw hole; steel plate body is like a 'hat', the middle part arc part is in certain radian and is consistent with the anatomy shape of acetabulum, alar parts at the two side slightly raise to adapt the anatomy shape of acetabulum at nodule extension position with upper ilium and lower ischium; the plate body thickness of the steel plate of the invention is not uniform, the thinner side is at the connection position with acetabulum back wall margin, the thicker side is at the contact position with acetabulum back column, the middle transits gradually, and the overall design is consistent with sclerotin thickness variation of acetabulum. The invention can be used in operation only by adjusting according to fracture situation and has good fit perfectly with local sclerotin, no bigger hole can be produced, and a bolt can be prevent from entering articular cavity when being imbedded.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to an internal fixation bone plate for acetabular posterior wall fractures. Background technique [0002] With the rapid development of my country's social economy, accidents in the construction and transportation industries occur frequently, and many patients often have acetabular fractures at the same time. According to the classification of acetabular fractures, acetabular posterior wall fractures account for the highest proportion of all acetabular fractures, accounting for about 1 / 4. Because fractures of the posterior wall of the acetabulum involve the hip joint surface and are often combined with posterior dislocation of the femoral head, most of them require surgical treatment, requiring anatomical reduction of the articular surface and adequate internal fixation to obtain early functional exercise and avoid hip joint instability and trauma Arthritis form...

AI Technical Summary

Problems solved by technology

However, the thickness of the posterior wall of the acetabulum is not uniform, and there is an arched radian. Therefore, in most cases, the fixed steel plate and reconstruction belt are not completely conformed to the bone of the fracture site, and there may be a certain gap. This will easily lead to uneven distribution of stress, eventually leading to failure of internal fixation, and fracture of the steel plate or reconstruction belt, causing great pain to the patient. In severe cases, reoperation is required, which increases the financial burden of the patient

[0005] To sum up, the currently used internal fixation plates or reconstruction bands in the posterior wall of the acetabulum are inconvenient to use during surgery due to design defects. Bending; and the thickness of the steel plate is uniform, the fixation is not fitting, it is easy to cause internal fixation failure, affect the quality of the entire operation and the recovery of patients after surgery

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