Pendlebury G, Rimmert B, Yuan X

Ischiofemoral impingement (IFI) is an uncommon etiology of hip pain, first reported in three patients after total hip arthroplasty and proximal femoral osteotomy. IFI is defined as a narrowing of the ischiofemoral space (IFS) between the lesser trochanter and ischium, leading to edema of the quadratus femoris (QF) muscle and sciatic nerve compression. Abnormalities of the QF may lead to hip, buttock, and groin pain radiating distally from the posterior thigh, likely due to irritation of the sciatic nerve adjacent to the QF.² Existing literature on this condition is limited, including case reports of congenital variants in women and children.³ We report the case of a 50-year-old woman with chronic right hip pain who was diagnosed with ischiofemoral impingement syndrome (IFIS) by physical examination findings and magnetic resonance imaging (MRI) results.

Pendlebury, G., Rimmert, B., & Yuan, X. (2022). Ischiofemoral Impingement Syndrome: Case Report and Treatment Review. Practical Pain Management