Ischiofemoral impingement: assessment of MRI findings and their reliability

Ahmet Akça, Kadihan Yalçın-Şafak, Ebru Dulger-İliş, Zeki Taşdemir, Tamer Baysal


Objective: To evaluate the MRI findings and their validity in patients with ischiofemoral IFI syndrome
Methods: We retrospectively analyzed a total of 55 hips. MRI findings of 30 hips were consistent with IFI syndrome. 25 hips had no MRI findings consistent with IFI syndrome. We compared the ischiofemoral space (IFS), quadratus femoris space (QFS), ischial angle (IA) and femoral neck angle (FNA) between the age and sex matched groups. We also analyzed the edema, fatty replacement and partial or total rupture of quadratus femoris muscle. Mann Whitney U test was used to compare the data.
Results: We observed atrophy in 8 , faty replacement in 8 and edema in all of the quadratus femoris muscle. QFS (p<0.001) and IFS (p<0.001) were significantly lower in patients compared with the control group. IA (p=0.012) and FNA( p=0.010) values were significantly higher in patients compared with the control group.
Conclusion: MRI findings of IFI include narrowing of QFS and IFS and increase in IA and FNA. This condition should be kept in mind in patients with hip pain.

Atha Comunicação e Editora Ltda Rua Machado Bittencourt, 190 conj. 410 CEP: 04044-903 Vila Clementino Tel.: 5579-5308/ 5087-9502