Open AccessMetatarsal Pronation in Hallux Valgus Deformity: A Review
Author(s) -
Emilio Wagner,
Pablo Wagner
Publication year - 2020
Publication title -
journal of the american academy of orthopaedic surgeons. global research and reviews
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.358
H-Index - 2
ISSN - 2474-7661
DOI - 10.5435/jaaosglobal-d-20-00091
Subject(s) - valgus , medicine , first metatarsal , deformity , metatarsal bones , arthrodesis , valgus deformity , sesamoid bone , orthodontics , tarsometatarsal joints , stress fractures , anatomy , radiography , surgery , alternative medicine , pathology
Hallux valgus deformity is a multiplanar deformity, where the rotational component has been recognized over the past 5 to 10 years and given considerable importance. Years ago, a rounded shape of the lateral edge of the first metatarsal head was identified as an important factor to detect after surgery because a less rounded metatarsal head was associated to less recurrence. More recently, pronation of the metatarsal bone was identified as the cause for the rounded appearance of the metatarsal head, and therefore, supination stress was found to be useful to achieve a better correction of the deformity. Using CT scans, up to 87% of hallux valgus cases have been shown to present with a pronated metatarsal bone, which highlights the multiplanar nature of the deformity. This pronation explained the perceived shape of the metatarsal bone and the malposition of the medial sesamoid bone in radiological studies, which has been associated as one of the most important factors for recurrence after treatment. Treatment options are discussed briefly, including metatarsal osteotomies and tarsometatarsal arthrodesis.