PMC9467771_01
A 20-year-old woman with severe acetabular dysplasia. (a) Preoperative anteroposterior radiograph of the left hip joint, (b) preoperative CT coronal view, and (c) preoperative 3D-CT frontal view. Compatibility of the left hip joint was poor, and the femoral head of the superior acetabular coverage was insufficiently covered. (d) The abduction radiograph of the left hip shows good compatibility with the left hip joint. (e) The distance of leg length discrepancy from the center of the lesser trochanter to the bottom of the ischial tuberosity was 17.6 mm.
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fig1
Preoperative CT images showed poor compatibility of the left hip joint and inadequate superior acetabular coverage (Figure 1).
CT images taken one week after surgery: (a) frontal view, (b) sagittal view, and (c) posterior view. There was no fracture of the posterior column, and since the pubis was not completely osteotomized, there was no penetration of the osteotome into the joint, and the pubis was not completely cut. The pelvic ring has been preserved.
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fig2
The rotated bone fragment was moved to the inferior-lateral position, and the pubis was not completely osteotomized (Figure 2).
Anteroposterior (AP) radiograph and CT images taken three years after surgery showing the following: (a) AP radiograph of the left hip joint, (b) CT coronal view, and (c) 3D-CT frontal view. Although the superior acetabular coverage was still insufficient, the compatibility of the left hip joint was improved (d). When measured, the postsurgery leg length discrepancy was 9.5 mm.
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fig3
The rotated bone fragment and beta-TCP recognized better union and remodeling (Figure 3).