Presentation
Chronic pain in both hips, no history of hip surgery or hip trauma.
Patient Data
Age: 25 years
Gender: Male
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Bilateral deformity of the femoral heads. Geodes in both the acetabulum and femoral head on both sides.
A thin sclerotic line that crosses the femoral neck is called the 'sagging rope sign'. It is better seen on the right side.
From the case:
Sagging rope sign of Perthes disease
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Irregular femoral head and geode formation. Sagging rope sign on both sides, best visible on the right side.
Case Discussion
The sagging rope sign is visible on a plain radiograph of the hip or pelvis. It describes the thin sclerotic line that crosses the femoral neck and resembles a hanging or sagging rope that is suspended on both ends. This sign indicates a late stage of Perthes disease.
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