Fracture through a calcaneonavicular bar occurred in a 17-year-old boy with bilateral tarsal coalitions. In spite of successful union of the fracture, symptoms persisted, and talonavicular fusion eventually became necessary. The long-term disability that followed was related not to the fracture but to associated peroneal muscle spasm and secondary degenerative change in the midtarsal joints. Talonavicular arthrodesis was insufficient to relieve the pain that resulted from walking on uneven ground; triple arthrodesis may be indicated.