Review Question - QID 219797

A 69-year-old woman presents to the clinic for a second opinion 18 months after a routine primary total hip arthroplasty performed through a posterior approach. She endorses pain in the front of the hip that is worse with ascending stairs and when getting up from the couch after sitting for more than 30 minutes. She denies any feelings of instability, any history of dislocation, as well as any history of fevers, chills, or redness and fullness about the hip. Radiographs taken in the clinic demonstrate the finding demarcated in Figure A, and a subsequent CT scan confirms the radiographic findings. She is referred to radiology for an image-guided iliopsoas tendon injection which alleviates all of her pain for 8 weeks. If she returns to the clinic with a recurrence of her pain, which of the following treatments is most likely to alleviate her symptoms permanently?