The patient was a 68-year-old man who had undergone a right total hip arthroplasty 3 years prior. He complained of progressively worsening right hip pain. Physical examination findings were consistent with a positive sign of the buttock. A triple-bone scan showed increased radio-pharmaceutical activity, which is consistent with infection. Subsequent aspiration of the right hip revealed infection, which was treated with antibiotics before the patient underwent a revision total hip arthroplasty.

J Orthop Sports Phys Ther 2010;40(6):377. doi:10.2519/jospt.2010.0410

KEY WORDS: computed tomography, hip, triple-phase bone scan