Abstract
Objectives:
Ischiofemoral impingement (IFI) is becoming an increasingly recognized source of posterior hip pain. Often associated with hamstring pathology, one such treatment for IFI is lesser trochanter osteotomy (LTO). However, there is currently limited study on the outcome of surgical treatment for IFI. This study’s purpose was to evaluate the outcomes of an LTO in the setting of IFI.
Methods:
A consecutive series of patients undergoing an LTO for IFI by a single high-volume hip preservation surgeon at an academic medical center was reviewed. Patient demographics and pre-operative imaging were reviewed including ischiofemoral space (IFS) and quadratus femoris space (QFS). All imaging measurements were independently calculated by two separate reviewers and values were averaged. Surgical details and post-operative complications were evaluated. Functional outcomes scores were obtained including the Modified Harris Hip Score (mHHS) and Hip Outcome Score (HOS) at least one year post-operatively.
Results:
14 patients (16 hips) were included in the study with a mean age of 45.1±18.0 years and mean follow-up of 2.2 years. 87.5% of the cohort was female, and 87.5% of patients had concomitant procedures with most undergoing hamstring repair. 81.3% of patients underwent injection into the ischiofemoral space perioperatively. The mean IFS and QFS for the cohort were 13.7±5.3 mm and 12.1±3.5 mm, respectively. Post-operative functional outcome data was available for 11 hips. 8 (72.7%) reported that they would undergo the procedure again with mean mHHS and HOS scores of 72.5±21.0 and 84.6±13.0, respectively. There was no difference in outcomes based on whether the patient reported that they would undergo the procedure again. One patient required additional surgery post-operatively (ipsilateral piriformis release).
Conclusions:
As one of the largest series of patients undergoing surgical treatment for IFI,