PMC8189802_01
The plain radiograph of initial visit to our hospital at 7 years before surgery. Osteoarthritic changes in both hips without acetabular dysplasia were identified.
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The plain radiograph showed osteoarthritic change in both hips, and borderline acetabular dysplasia was suspected as a sharp angle (R /L ) of 39 /41 , a center edge angle (R /L ) of 25 /23 , and acetabular head index (R %/L %) of 82%/80% (Figure 1).
The plain radiograph before surgery. End-stage osteoarthritis was revealed in both hips.
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The plain radiograph revealed end-stage osteoarthritis (OA) (Figure 2).
Postoperative plain radiograph. Hybrid THA was performed on both hips.
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In the present case, we planned bilateral THA subsequently, and equalization of leg length could be achieved at the time of the second surgery (Figure 3).
Postoperative radiograph with two types of characteristic postures in ballet. The patient was demonstrating the split position. These views were obtained with cassettes by getting as close as possible to the patient's back during the actual postures. The radiograph did not show any characteristics of bony impingement, implant-implant impingement, or subluxation of the femoral head: (a) split position; (b) left split position.
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The plain radiograph was taken in the split position (Figure 4(a)) and left split position (Figure 4(b)), and the radiograph did not show any characteristics of impingement or tendency of dislocation.