Osteotomy ruler for pelvic osteotomy and measuring method

Abstract

The invention belongs to the technical field of pelvic osteotomy, and relates to an osteotomy ruler for pelvic osteotomy and a measuring method; the osteotomy ruler comprises a ruler, a 180-degree protractor, a 90-degree protractor and a measuring line; the ruler and the 180-degree protractor are vertically and fixedly arranged, and the 0 scale on the ruler is aligned with the 0 scale on the 180-degree protractor; a rotating shaft is connected to the 0 scale of the 180-degree protractor; the rotating shaft is perpendicular to the 180-degree protractor, and a protractor positioning rod is connected to the front portion of the rotating shaft; the rear portion of the rotating shaft penetrates through the 180-degree protractor and is provided with a locking piece used for locking the rotatingshaft to rotate; the rotating shaft is sleeved with the bottom of the 90-degree protractor; the 90-degree protractor is located between the ruler and the 180-degree protractor, and the plane where the90-degree protractor is located is perpendicular to the plane where the 180-degree protractor is located; the measuring line is arranged at the 0 scale of the 90-degree protractor in a matched mode through a measuring fixing piece, and angle measurement is carried out on the 90-degree protractor through the measuring line. The osteotomy ruler has the advantages that three-dimensional measurementof V-shaped defects is achieved, and accuracy and convenience in the measurement process are improved.

Description

technical field [0001] The invention belongs to the technical field of pelvic osteotomy, in particular to an osteotomy ruler and a measuring method for pelvic osteotomy. Background technique [0002] Developmental Dysplasia of Hip (DDH) is one of the most common musculoskeletal diseases in infants and young children. Salter osteotomy is the first choice and gold standard for early surgical correction of DDH. Osteotomy is made from the spine to the greater sciatic notch, and the distal end of the osteotomy is rotated outward, forward, and downward, so that there is a V-shaped defect at the distal and proximal ends of the osteotomy, and then a bone block is cut from the iliac spine and inserted into the pelvic osteotomy At the V-shaped defect. [0003] During pelvic osteotomy, because the distal end of the osteotomy needs to be rotated outward, forward, and downward, three-dimensional measurement of the V-shaped defect is required. However, currently, during pelvic osteotomy,...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of inconvenient measurement of V-shaped defect in the above-mentioned existing pelvic osteotomy, and to provide a kind of osteotomy ruler for pelvic osteotomy. Three-dimensional measurement improves the convenience of V-shaped defect measurement and improves the accuracy of V-shaped defect measurement.

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