Obturator internus muscle strain in an adolescent skier.

There are many causes of acute hip pain. Obturator internus (OI) muscle strain is a rare cause of the presentation. We report a case of OI muscle strain in a 15-year-old ski racer who presented with new onset acute right hip pain. Magnetic resonance imaging showed enhancement of the obturator internus muscle indicating muscle injury. Patient was treated conservatively with target physical therapy and NSAIDs for pain management. This case illustrates an atypical diagnosis for a common chief complaint.