Recurrence rates with long-term follow-up after hallux valgus surgical treatment using proximal osteotomies: a systematic review and meta-analysis.

Abstract

Purpose: To synthesize and critically appraise the literature on long-term outcomes of proximal osteotomies of the first metatarsal (M1) to treat HV without inflammatory disease or degenerative arthritis and to assess the long-term HV recurrence rates of studies with a minimum follow-up of 5 years.

Methods: This systematic review conforms to the PRISMA guidelines. The authors conducted a search using PubMed, Embase®, and Cochrane Central Register of Controlled Trials databases. Studies that report outcomes of proximal osteotomies of the M1 for non-inflammatory and non-degenerative HV at a minimum follow-up of 5 years were included. We found four eligible studies comprising four datasets, and all assessed proximal osteotomies with a mean follow-up that ranged from 8 to 18 years.

Results: The systematic search returned 7,918 records, of which 2,693 were duplicates, leaving 5,225 for screening. Of these, four studies were included, covering a total of 158 feet with a mean follow-up that ranged from 8 to 18 years. The pooled HVA following proximal osteotomies was 20.4° (CI: 11.3°-29.4°; I 2 = 95%), pooled IMA was 8.8° (CI: 3.3°-14.2°; I 2 = 98%), and pooled AOFAS was 82.1 (CI: 62.4-101.8; I 2 = 97%).

Conclusions: At a minimum follow-up of 8 years following proximal osteotomies of M1, the HVA was 20.4° and the IMA was 8.8°. Furthermore, the recurrence rates considering the various thresholds of HVA were 12% having >30°, 73% having >20°, and 13% if recurrence is a >10° increase in HVA.

Level of evidence: Meta-analysis, level IV.