Isolated Subtalar Joint Arthrodesis
Isolated subtalar joint fusion is a powerful procedure applied in the engagement of definitive treatment for hindfoot arthritis and/or deformity. Because of the importance of the subtalar joint in dynamic biomechanical gait pattern kinematics, disease intrinsic to the joint can prove debilitating . Pathology associated with this important joint includes post-traumatic arthritis, flatfoot deformity, cavus foot deformity, inflammatory arthritis, and tarsal coalition . Late-stage STJ arthritis from long-standing residual hindfoot deformity or failed joint salvage attempts are also indications for definitive fusion . Certainly, subtalar joint fusion is often utilized in conjunction with other joint-modifying procedures such as total ankle replacement or global foot and ankle reconstructive procedures . Reported union rates are high at 84–100% (Reference). Because of the high union rate and low complication rates, the procedure has a high patient satisfaction coefficient . Case I shows significant deformity with STJ arthritic change and subsequent definitive fusion in conjunction with concomitant procedures in a long-standing recalcitrant flatfoot. Case 2 shows definitive STJ fusion secondary to post-traumatic arthritic change and calcaneal body collapse with decreased talar declination angle.
KeywordsSubtalar joint Arthrodesis Fusion Hindfoot Post-traumatic arthritis