Patella axis position movement track photographing device

Abstract

The present invention relates to the technical field of medical equipment, in particular to a patella axial motion locus photographing device, comprising a photographing table, characterized in that a photographing device is provided at the front end of the photographing table, which includes a driving cylinder, a hinge shaft, a bearing , bearing seat, turn frame, elastic clamping plate and X-ray box fixing device, said X-ray box fixing device is made up of front splint, rear splint, extension spring, tension spring and elastic clamping plate, and said turn frame is composed of The front strut, the rear strut, the left side plate and the right side plate are connected and fixed to form a square cylinder. The invention makes the arrangement of the patella dynamic on the static X-ray film, and displays the patellofemoral joint under different flexion angles of the knee joint. Joint correspondence relationship undoubtedly provides a sensitive and accurate examination method for patellofemoral instability diagnosis. The differential aspect plays a unique role and helps plan the selection of appropriate reconstructive surgery.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a patella axial motion trajectory photographing device. Background technique [0002] Abnormal tracking of the patella is a major cause of knee pain and its symptoms mimic other forms of intra-knee disorders. Because it is difficult to evaluate the abnormal track of the patella through physical examination and various X-ray techniques designed in the past, it is easy to be confused with other diseases in diagnosis, which brings great difficulties to choose the correct treatment method . The applicant took patella axial motion track radiographs on 68 knees of 43 patients, and explored the diagnosis and classification of abnormal patella track by studying the track of the patella in the process of knee flexion. [0003] 1 Materials and methods [0004] 1.1 Objects and Grouping [0005] From August 1997 to February 2004, 43 patients with abnormal patellar track were ...

AI Technical Summary

Problems solved by technology

But at present, the use of the knee joint bracket with adjustable knee flexion angle can only perform static axial radiographs of the patellar joint corresponding to a certain angle, and the structure is unreasonable. When used, the X-ray box has no fixed position, and the X-ray box The vertical angle to the patella joint does not meet the requirements for radiography, and at the same time, it is easy to fall during the adjustment of the angle during the radiography process. So far, there is no patella axial movement for preliminary inspection of patella tracking abnormalities track camera

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