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Simultaneous First Metatarsophalangeal Joint Arthrodesis and Sesamoidectomy With a Single Dorsomedial Incision

First metatarsophalangeal (MTP) arthrodesis is a well-accepted procedure for the treatment of end-stage hallux rigidus. Despite the excellent and predictable clinical results, the procedure does not address the metatarso-sesamoid joint complex. There has been one case report of arthritis of the metatarsal sesamoid joint as uncommon cause of post–arthrodesis hallux pain. Additionally, we have noted this complication in our practice as well despite the paucity of reported cases in the published literature. Resection of either the tibial or fibular sesamoid is an acceptable treatment for recalcitrant sesamoid pain; however, resection of both the tibial and fibular sesamoids as would be required for arthritic changes is not encouraged to prevent the risk of a cock-up toe deformity. Arthrodesis of the first MTP joint eliminates the possibility of this complication. Resection of the sesamoids following a first MTP fusion requires a separate incision with additional morbidity and risk to the medial plantar digital nerve. This second surgical intervention is not without morbidity and carries additional cast to the patient, which can be avoided if the pathology is appropriately identified preoperatively. We describe the surgical indications and novel technique for a first MTP arthrodesis and total sesamoid resection through a standard dorsomedial incision. The approach adds minimal surgical time and morbidity and eliminates the source of plantar first MTP pain that is present in a cohort of patients with hallux rigidus. Levels of Evidence: Level IV, Case Series