Equal length measuring device for hip joint replacement

Abstract

The invention relates to an equal length measuring device for hip joint replacement, belonging to the technical field of orthopaedic medical instruments. The device is used for measuring the replacement length when hip joint replacement is implemented. The technical scheme is as follows: a positioning screw and a positioning block of the device are fixedly arranged on the thighbone, the lower end of a guide bar is connected with the positioning block in a fastening manner, a measuring slide block slides on the guide bar, a measuring pointer moves up and down along with the measuring slide block and determines the dissection position of the hip joint before operation, and the position of the hip joint prosthesis after replacement is determined according to the indicating position of the measuring pointer after operation, so that the thighbone prosthesis after replacement mains the original length and ensures that the limbs after operation are equal in length. The device provided by the invention is simple in structure and convenient to use, fundamentally solves the positioning problem of hip joint replacement, avoids the condition that the limbs of patients after operation are not equal in length, and becomes an important apparatus for orthopaedic hip joint replacement which obtains an ideal effect. The device provided by the invention fills the blank in orthopaedic hip joint replacement and has huge popularization and using values.

Description

technical field [0001] The invention relates to a device for measuring replacement length during hip replacement, belonging to the technical field of orthopedic medical devices. Background technique [0002] Hip replacement is an effective treatment for femoral head necrosis, femoral neck fractures in the elderly, and hip osteoarthritis. Hip replacement surgery requires limbs to be equal in length before and after surgery. If there is unequal length of lower limbs after surgery, it will cause limp walking and seriously affect the treatment effect. At present, the judgment of hip joint height mainly depends on the operator's experience and preoperative X-ray film measurement results, which has obvious inaccuracy. However, due to the limited exposure and deep position of the replacement area during the operation, and the lack of special intraoperative hip joint height measurement tools, the operation of this type of operation has brought great inconvenience. Clinicians can o...

AI Technical Summary

Problems solved by technology

Hip replacement surgery requires limbs to be equal in length before and after surgery. If there is unequal length of lower limbs after surgery, it will cause walking lameness and seriously affect the treatment effect

At present, the judgment of hip joint height mainly depends on the experience of the surgeon and the results of preoperative X-ray film measurement, which is obviously inaccurate

However, due to the limited exposure of the replacement area during the operation, the deep location, and the lack of special tools for measuring the hip joint height during the operation, the operation of this type of operation has brought great inconvenience.

Clinicians can only rely on experience to operate, which makes it very difficult to accurately determine the height of the hip joint prosthesis. Equal length is not conducive to the recovery of patients

This situation has not been fundamentally changed so far, and it has become the main factor restricting the ideal effect of orthopedic hip replacement surgery, and it is necessary to take measures to solve it

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