Osteonecrosis of the femoral head

Case contributed by Sally Ayesa


Radiograph for hip replacement planning

Patient Data

Age: 50 years
Gender: Male

Pelvic and left hip x-ray


There is linear subchondral lucency in the left femoral head, seen best on the oblique projection ("cresent sign"). There is irregularity of the left femoral head articular surface. 

Case Discussion

This patient was known to have avascular necrosis/osteonecrosis of the left femoral head, and went on to a successful left total hip replacement. They were found to be osteoporotic on pathology examination of bone fragments. 

How to use cases

You can use Radiopaedia cases in a variety of ways to help you learn and teach.

Creating your own cases is easy.

Updating… Please wait.

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

 Thank you for updating your details.