MSFinals-2501

MSFinals-2501

A 56-year-old woman presents to her doctor with a painful right hip that has been bothering her for the past 8 months. She takes codeine and paracetamol four times a day for pain relief. She has no history of hip injury or trauma. The patient has a mild asthma history and is in remission from breast cancer, which was treated with a bilateral mastectomy and chemotherapy 5 years ago. She drinks 2 glasses of wine over the weekend and does not smoke.

During the examination, the doctor notices no visible deformity of the right hip, but it is tender to the touch. The patient walks with a noticeable limp and appears to be in discomfort. A pelvis X-ray reveals a crescent sign. What is the most significant risk factor for this patient’s condition?