ISCHIOFEMORAL IMPINGEMENT: ASSESSMENT OF MRI FINDINGS AND THEIR RELIABILITY.

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

doi:10.1590/1413-785220162406162686

Abstract

ABSTRACTObjective: To evaluate the Magnetic Resonance Imaging (MRI) findings and their validity in patients with ischiofemoral impingement syndrome (IFI) .Methods:We retrospectively analyzed 55 hips. MRI findings of 30 hips were consistent with IFI syndrome. Twenty five 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 gender matched groups. We also analyzed 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 eight, fatty replacement also in eight and edema in all of the quadratus femoris muscle. QFS (p<0.001) and IFS (p<0.001) were significantly lower in patients as compared to 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 for patients with hip pain. Level of Evidence III, Retrospective Study.

Highlights

Hip and groin pain is a common clinical condition and may affect patients of all ages
ischial angle (IA) (p=0.012) and femoral neck angle (FNA) (p=0.010) values were significantly higher in patients compared with the control group
This clinical condition may be associated with wasting or edema of the quadratus femoris muscle and may occur secondary to injury in other muscles controlling the movements of the hip, such as the hamstrings and gluteus medius.[10]

Summary

INTRODUCTION

Hip and groin pain is a common clinical condition and may affect patients of all ages. In an investigation by Christmas et al.1 14.3% of adults aged 60 years and older reported significant hip pain on most days over the previous six weeks. Ischiofemoral impingement (IFI) syndrome can cause hip pain, which usually occurs in middle-aged to elderly women, being uncommon in males. All three patients had hip pain and presented narrowing of the ischiofemoral space (IFS), which was relieved after lesser trochanter excision. Patti et al.[5] described magnetic resonance imaging (MRI) findings of ischiofemoral narrowing and impingement in a patient with hip pain without a history of trauma or surgery, supporting IFI syndrome as a medical condition that clinicians, surgeons and radiologist should be aware of. The aim of this study was to investigate the MRI findings and their reliability regarding IFI syndrome patients

MATERİALS AND METHODS

RESULTS

Group n