RS Amaravati, MJ Saji, JD Kowshik, HP Rajagopal
Department of Orthopaedics, St. John’s Medical College Hospital, Johnnagar, Bangalore 560 034, India

Enthesopathy at the superior or inferior surface of a calcaneus may be seen in normal individuals having degenerative osteoarthrosis. This condition is also known to occur in patients with rheumatoid arthritis, seronegative spondyloarthropathy, trauma, as well as inflammatory and metabolic diseases. Enthesopathy may sometimes be the first manifestation of a variety of rheumatic diseases. In this report, we present a case of massive enthesopathy of the superior and inferior surface of the calcaneus giving rise to an ‘axe effect’.