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Foot Ankle Clin. 2018 Jun;23(2):281-295. doi: 10.1016/j.fcl.2018.02.001. Epub 2018 Mar 9.

Hallux Valgus Deformity and Treatment: A Three-Dimensional Approach: Modified Technique for Lapidus Procedure.

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Department of Orthopaedics, West Virginia University, PO Box 9196, Morgantown, WV 26506-9196, USA. Electronic address:
Foot and Ankle Division, Moore Center for Orthopedics, Lexington, SC, USA.


In a hallux valgus deformity, the problem is deviation of the hallux at the metatarsophalangeal joint and of the first metatarsal at the tarsometatarsal joint. Although anterior-posterior radiograph findings have been prioritized, deviation in the other planes can substantially change visible cues. The modified technique for Lapidus procedure procedure, uses all 3 planes to evaluate and correct the deformity, making radiographic measurements less useful. Using a triplane framework and focusing on the apex of the deformity, all bunions become the same modified technique for Lapidus procedure can be performed regardless of the degree of deformity, always includes triplane correction, and deformity size becomes irrelevant.


Bunion; CORA; Classification system; Hallux valgus; Lapidus; Modified technique for Lapidus procedure; Triplane correction

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