Because any intra-articular, space-occupying mass of the foot can result in significant pain,disruption of joint motion, and gait abnormalities,reports of synovial lipomas in the foot are important contributions to podiatric medical, orthopedic, and rheumatologic practices.5 The present case report describes the presentation, diagnosis, magnetic resonance imaging, and surgical treatment of a synovial lipoma originating from the posterior facet of the subtalar joint.