A 32 year old man presents with worsening pain in his right hip for 6 months. The pain was localized to the front of the hip, occurred with movement, and was associated with restriction of motion. There was no pain at rest.
He also experienced pain in his right knee during the same time period. However, there was no associated swelling or restriction of knee motion.
There is no history of previous trauma, and his medical and surgical histories are unremarkable. He has been consuming 3 to 4 glasses of whiskey on a daily basis for several years now.
A complete blood count is found to be normal. His ESR is 5 mm/1h, while a C-reactive protein assay is within normal levels.