Fusion of talocalcaneal, calcaneocuboid and talonavicular joints
• severe pain and deformity in rearfoot that does not respond to conservative measures, especially with poor biomechanical function; paralytic (eg poliomyelitis)
• usually reserved for pathology when all rearfoot joints are involved
Do loose compensatory motions available at the subtalar and midtarsal joints loss of motion in one or more joints may increase stress on adjacent joints.
• most studies show patient satisfaction rates of 75%-90%