Ischiofemoral impingement is a result of the quadratus femoris muscle being compressed between the ischial tuberosity and the posterior femur resulting initially in quadratus femoris oedema but can progress to tears and severe atrophy.

• Initially there is oedema in the quadratus femoris muscle.

• Look for Increased PDFS signal (Pink arrow) in the quadratus femoris muscle.

• For the more detail and the progressive findings on MRI for Ischiofemoral impingement go to the related posts below and click on the link.