Assessment of total hip arthroplasty as a predisposing factor for ischiofemoral impingement

Adriana L. Oliveira, Debora C. Azevedo, Alireza Eajazi, William E. Palmer, Young Min Kwon, Miriam A. Bredella, Martin Torriani

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


Objective: To examine the effect of total hip arthroplasty (THA) on ischiofemoral (IF) and quadratus femoris (QF) spaces with the hypothesis that THA does not affect ischiofemoral relationships. Materials and methods: The study was IRB approved and complied with HIPAA guidelines. We identified consecutive MR examinations (pelvis and/or hip) obtained at our institution in adults (≥18 years old) screened for THA-related complications. Native hips from the same individuals served as controls. We collected medical record data including age, gender, surgical history, and THA designs. Two radiologists independently measured the IF-RAD and IF-MRI (IF space on radiographs and MR imaging, respectively) and QF space (on MR imaging). Groups were compared using ANCOVA controlled for gender. Results: The study group comprised 250 hips (132 subjects; 162 post-THA and 88 native hips). Subjects were aged 59 ± 10 years, with 66 males and 66 females. Comparison of IF-MRI and QF spaces between native and post-THA hips showed no differences (P > 0.12) and IF-RAD was higher in post-THA subjects (P = 0.01). No differences in the IF-MRI and QF spaces were present between native hips and different THA designs (P > 0.4). IF-RAD of metal-on-metal THA was higher than that of native hips (P = 0.01) and trended higher than ceramic-on-polyethylene THA (P = 0.08), with the remaining comparisons showing no significant differences (P > 0.4). Conclusions: Radiographic- and MRI-based measures in patients with standard THA do not show narrowing of IF and QF spaces.

Original languageEnglish (US)
Pages (from-to)1755-1760
Number of pages6
JournalSkeletal radiology
Issue number12
StatePublished - Dec 1 2015
Externally publishedYes


  • Hip
  • Impingement
  • Ischiofemoral
  • MRI
  • Quadratus femoris
  • Total hip arthroplasty

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging


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