A 40-year-old man presented to a physician for knee pain when squatting and in resisted knee extension. The initial diagnosis was patellar tendinopathy. Following physical therapy treatment, a sports medicine physician was consulted for a second opinion. Radiography, diagnostic ultrasound, and magnetic resonance imaging were performed, confirming the original diagnosis and revealing Hoffa's fat pad impingement secondary to an ununited ossicle. J Orthop Sports Phys Ther 2017;47(11):885. doi:10.2519/jospt.2017.7443.
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