In surgical correction of stage II adult-acquired flatfoot with hindfoot valgus, a medial displacement calcaneal osteotomy is performed. Its primary purpose is to:

• A Lengthen the lateral column of the foot
• B Correct forefoot supination through the Chopart joint
• C Directly repair the torn tibialis posterior tendon
• D Shift the mechanical axis of the calcaneus medially, correcting hindfoot valgus and unloading the deltoid and spring ligament complexes ✓

Explanation

Translating the calcaneal tuberosity medially realigns the hindfoot beneath the tibial axis, converting the pull of the Achilles tendon from an eversion force into a neutral one and protecting the soft tissue reconstructions such as FDL transfer. Lateral column lengthening through the calcaneocuboid joint or anterior calcaneus addresses forefoot abduction instead. The osteotomy does not touch the posterior tibial tendon itself, and residual forefoot supination after hindfoot correction may need a separate medial cuneiform osteotomy.

Reference: Campbell's Operative Orthopaedics, 14th ed.

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Written and medically reviewed by the StethoPrep medical team.