Delayed Onset Iliopsoas Tendonitis With Intramuscular Hematoma Following Total Hip Arthroplasty.

Iliopsoas tendonitis following total hip arthroplasty (THA) can be challenging to diagnose due to the many causes of postoperative groin pain. This case involves a 66-year-old female with right-sided hip and groin pain and a palpable mass, 3 years post-THA. Initial recovery was unremarkable until the sudden onset of symptoms after exercise.