Sagging rope sign of Perthes disease

Case contributed by Dr Simon Vanden Berghe


26-year-old male of Middle Eastern origin. Chronic pain in both hips, no history of hip surgery or hip trauma.

Patient Data

Age: 26 years
Gender: Male

Bilateral deformity of the femoral heads. Geodes in both the acetabulum and femoral head on both sides.

Thin sclerotic line that crosses the femoral neck is called the 'sagging rope sign'. It is better seen on the right side.

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. 

PlayAdd to Share

Case information

rID: 52165
Published: 24th Mar 2017
Last edited: 23rd Jun 2017
Inclusion in quiz mode: Included

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.