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  • Title: Prevalence of Metatarsus Adductus in Symptomatic Hallux Valgus and Its Influence on Functional Outcome.
    Author: Loh B, Chen JY, Yew AK, Chong HC, Yeo MG, Tao P, Yeo NE, Koo K, Rikhraj Singh I.
    Journal: Foot Ankle Int; 2015 Nov; 36(11):1316-21. PubMed ID: 26202480.
    Abstract:
    BACKGROUND: Metatarsus adductus (MA) increases the risk of developing symptomatic hallux valgus (HV). This study aimed to determine the prevalence of MA in patients with symptomatic HV and to evaluate how it affected the functional outcome after scarf osteotomy. METHODS: Between January 2007 and June 2012, a total of 206 patients who underwent scarf osteotomy for symptomatic HV at a tertiary hospital were included. The metatarsus adductus angle (MAA) was determined using the Modified Sgarlato method, and these patients were categorized into 2 groups: MA (MAA > 20 degrees); and Control (MAA ≤ 20 degrees). The patients were prospectively followed for 2 years. RESULTS: The prevalence of MA was 33% (68/206) with a mean MAA of 24 ± 4 degrees (range = 20-39). There was a 21 ± 12 degrees and 18 ± 9 degrees improvement in hallux valgus angle for the MA and Control groups, respectively (P = .061), whereas there was a 6 ± 4 degrees and 6 ± 3 degrees improvement in intermetartarsal angle for the MA and Control groups, respectively (P = .475). The visual analog scale, AOFAS Hallux Metatarsophalangeal-Interphalangeal Scale, and Physical and Mental Component Scores were comparable between the 2 groups both preoperatively and at 2 years' follow-up (all P > .05). Two patients in the control group required revision surgery for recurrence symptomatic HV. CONCLUSION: The authors conclude that MA did not predispose the patient to poorer functional outcome after scarf osteotomy with the advent of good operative techniques. LEVEL OF EVIDENCE: Level II, prospective comparative study.
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