ANTERIOR ILIOPSOAS IMPINGEMENT AFTER TOTAL HIP-ARTHROPLASTY

Pain after total hip arthroplasty (THA) can be caused by a multitude o f conditions, including infection, aseptic loosening, heterotopic ossi fication, and referred pain. It is also recognized that soft tissue in flammation about the hip, such as trochanteric bursitis, can lead to h ip pain after THA. Two cases of persistent iliopsoas tendinitis follow ing THA are reported, which are believed to be caused by psoas tendon impingement against a malpositioned, uncemented, metal-backed acetabul ar component. The authors are unaware of previous reports of this prob lem, and suggest that the problem be considered in the differential di agnosis of groin pain following THA.