Distal Oblique Metatarsal Osteotomy Technique in Hallux Valgus Deformity: Clinical and Radiological Results

Abstract

Objectives: This study aims to evaluate the radiological andfunctional outcomes of hallux valgus patients treated with distaloblique metatarsal osteotomy technique.Patients and methods: Twenty-six feet of 22 patients (4 males,18 females; mean age 46.2±18 years; range, 16 to 70 years) whowere diagnosed as hallux valgus between March 2013 and April2016 and who underwent distal oblique metatarsal osteotomy wereincluded in this retrospective study. American Orthopedic Foot andAnkle Society/Hallux Metatarsophalangeal-Interphalangeal Scale(AOFAS/HMIS) was used for clinical and functional evaluation.The hallux valgus angle (HVA), intermetatarsal angle (IMA),distal metatarsal articular angle (DMAA), sesamoid position, firstmetatarsal length and forefoot bone and soft tissue width weremeasured for radiological evaluation.Results: The mean follow-up time was 33.1±9.8 months. TheAOFAS/HMIS score increased significantly postoperatively(p=0.001). In the footwear section of the AOFAS/HMIS, themedian preoperative score of 5 (range, 0-5) increased to 10(range, 5-10) at the postoperative period (p=0.001). Hallux valgusangle, IMA, DMAA, and first metatarsal length significantlydecreased when compared to preoperative measurements.Forefoot bone width also decreased significantly from 9.3 cm(range, 7.5-11.5 cm) to 8.8 cm (6.8-10.3 cm) (p=0.001).Conclusion: Distal oblique metatarsal osteotomy is a safe methodfor hallux valgus deformity. Forefoot width reduction, decreaseof soft tissue tension, sesamoid reduction, and plantar fasciarelaxation are the crucial benefits of this method.