A New Minimally Invasive Surgery of Hallux Valgus: Technique and Preliminary Outcomes

Abstract PurposeThis study aimed to present a new minimally invasive surgery (MIS) technique and evaluate the safety and efficacy for correction of hallux valgus deformity at a preliminary follow-up.Methods48 consecutive feet that underwent a new MIS of hallux valgus with a mean 17.6 months follow-up (range 9 to 28 months). This technique uses a new osteotomy of the first metatarsal with screw fixation and percutaneous Weil osteotomy of lesser metatarsal without fixation. All patients were clinically evaluated using the Manchester-Oxford Foot Questionnaire (MOXFQ), American Orthopedic Foot & Ankle Society Hallux Metatarsophalangeal-Interphalangeal score (AOFAS HMI) and visual analogue scale (VAS). Radiographic measures included hallux valgus angle (HVA), intermetatarsal angle (IMA) and the length of the first metatarsal. ResultsThere was significant improvement in the radiographic parameters(P<0.001). The IMA decreased from 13.3° to 9.8°, the HVA improved from 35.9° to 17.9° and the mean MT length decreased by 4 mm. There was significant improvement of VAS in the postoperative 2 weeks (P < .001). There were significant improvements in the MOXFQ scores and AOFAS HMI scores, respectively. The total rate of complication was 10.4%.ConclusionThe preliminary radiographic and clinical outcomes of this new minimally invasive surgery show that it is a safe procedure and had significantly less pain in the first 2 weeks following surgery.