Correction of Hallux Valgus Deformity in Association With Underlying Metatarsus Adductus Deformity

Naohiro Shibuya, Daniel C Jupiter, Britton S Plemmons, Lanster Martin, Jakob C Thorud
Foot & Ankle Specialist 2017, 10 (6): 538-542

Presence of underlying metatarsus deformity is known to negatively affect the outcome of hallux valgus corrective surgery. Yet there are many other factors that also affect final outcomes. In order to address the potential relationships between variables, we attempted to evaluate the association of metatarsus adductus with surgical outcomes, independent of other common factors used in evaluation of hallux valgus deformity. We enrolled 154 patients who had undergone hallux valgus corrective surgery and recorded their pre- and postoperative intermetatarsal (IM12) and hallux valgus (HVA) angles, preoperative Engel's angle, and type of hallux valgus procedure. Using linear and logistic regression models, we identified variables that were independently (1) associated with the final IM12 and HVA and those (2) independently associated with dichotomized postoperative IM12 and HVA. We found that the only factors that were independently associated were preoperative IM12 with postoperative IM12, and preoperative HVA with postoperative HVA. In the linear model, a discretized Engel's angle of 21 to 25 was marginally negatively associated with the final IM12. There was no detectable relationship between underlying metatarsus adductus deformity and the final outcome of hallux valgus correction after adjusting for other covariates.

LEVELS OF EVIDENCE: Level III: Retrospective, cohort study.

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