Age / Sex : 35 / F

Age / Sex : 35/F

Chief complaint : Left hip pain

1) What is your impression?

Two weeks later, you can see the final diagnosis with a brief discussion of this case.

* Send Application Answers to In Sook Lee, MD ([email protected])

Courtesy : Kyung Jin Suh, Dongguk University, College of Medicine Gyungju Hospital

Discussion

Findings:

Narrowing of the space between the ischial tuberosity and lesser trochanter

Abnormal signal intensity of the quadrates femoris muscle

Hamstring tendinosis

Differential Diagnosis:

Hamstring tendon pathology

Diagnosis:  

Ischiofemoral impingement syndrome, left

Discussion:

The skeletal anatomy of the hip provides two main sources for impingement: abnormal contact between the acetabulum and femur (femoroacetabular impingement ) or between the ischium and femur (ischiofemoral impingement).

The dominant findings of the ischiofemoral impingement were congenital narrowing of the space between the ischial tuberosity and lesser trochanter with abnormal MR signal intensity of the quadratus femoris muscle.

Ischiofemoral impingement may represent a cause of hip pain and should be considered in cases with MR signal abnormality of quadratus femoris muscle.

References:

Torriani M, Souto SC, Thomas BJ, Ouellette H, Bredella MA. Ischiofemoral impingement syndrome: an entity with hip pain and abnormalities of the quadratus femoris muscle. AJR 2009; 193:186–190