Outcomes of Simultaneous Bilateral vs Unilateral Distal Chevron Metatarsal Osteotomy in Hallux Valgus Patients Aged ≥60 Years

Abstract

Background:

The purpose of this study was to compare radiographic outcomes of simultaneous bilateral and unilateral distal chevron metatarsal osteotomy (DCMO) in hallux valgus patients aged ≥60 years.

Methods:

This retrospective study analyzed consecutive outcomes of simultaneous bilateral DCMO and unilateral DCMO performed between June 2010 and August 2018 in 90 feet of 60 patients. Thirty patients underwent simultaneous bilateral DCMO, and 30 underwent unilateral DCMO. Comparative analysis of radiographic and clinical parameters between a simultaneous bilateral DCMO group (SB) and a unilateral DCMO group (U) was performed.

Results:

Mean age at surgery (65.7±4.8 vs 65.2±5.2 years), mean length of follow-up period (20.0 vs 18.6 months), and preoperative radiographic parameters were similar between the 2 groups (SB vs U). Mean hallux valgus angle (HVA) improved from 34.2 to 5.4 degrees (correction angle SB 28.8 vs U 28.8 degrees). Mean first-to-second intermetatarsal angle improved from 15.8 to 6.8 degrees (correction angle SB 8.9 vs U 8.9 degrees). Hallux varus deformity was observed in 4 feet (SB 3 vs U 1), and mechanical instability with callus formation in 1 foot in the unilateral group.

Conclusion:

DCMOs in patients aged ≥60 years were radiographically effective and safe, even performed in one stage bilaterally. Radiographic parameters were similar in patients who underwent simultaneous bilateral and unilateral DCMO.

Level of Evidence:

Level III, retrospective cohort study.

Keywords

hallux valgus elderly distal chevron metatarsal osteotomy bilateral simultaneous surgery

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