Arthroscopic Sesamoidectomy and Plantar Metatarsal Head Bone Shaving in Management of First Metatarsal Head Metatarsalgia After First Metatarsophalangeal Fusion.

First metatarsophalangeal arthrodesis has been used to treat end-stage arthritis of the great toe (e.g., gout, post-traumatic, infection), severe hallux valgus deformity, hallux valgus caused by neuromuscular disorders, rheumatoid forefoot deformity, primary hallux varus, and rigid plantarflexion deformities, as well as a salvage procedure for failed previous operation of the great toe. As with any arthrodesis procedure, proper positioning of the hallux in first metatarsophalangeal arthrodesis is of utmost importance for good clinical outcome. The chief problem tends to be sagittal alignment. In case of the significant dorsiflexion malunion of the fusion site with excessive plantar pressure of the first metatarsophalangeal joint and abutment of the hallux to the shoebox, corrective osteotomy is indicated. If there is isolated excessive plantar pressure of the first metatarsophalangeal joint without hallux problem, arthroscopic sesamoidectomy and bone shaving of the plantar side of the first metatarsal head is another surgical option. The purpose of this technical note is to describe the details of arthroscopic sesamoidectomy and bone shaving of the plantar side of the first metatarsal head.

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