Modified scarf osteotomy has a possible capability to be indicated against very severe hallux valgus deformity

Abstract

Abstract Background Generally, scarf osteotomy is recommended for moderate-severe hallux valgus (HV) deformity. Although severe HV deformity is defined to be more than 40 degree (°), this definition of angular setting includes broad range of HV angle (HVA). Actually, very severe HV deformity such as more than 60° of the HVA is often seen. At present, whether scarf osteotomy would truly contribute to maintaining the correction status against such very severe deformity is elusive. Then, in this study corrective effectiveness of modified scarf osteotomy including very severe deformity (HVA ≥ 60°) was evaluated. Methods A retrospective, observational study of 93 feet [mean follow-up: 56.0 months after the surgery] was performed. Hallux scores of the Japanese Society for Surgery of the Foot (JSSF), a self-administered foot evaluation questionnaire (SAFE-Q), and pre-postoperative radiographic parameters were evaluated. The patients were categorized into three groups [44 feet: (mildly severe) 40° ≤ HVA 60° from the perspective of clinical score improvement. Level of evidence Level III.

Keywords

• Modified scarf osteotomy
• Very severe hallux valgus deformity
• Corrective effectiveness
• Clinical score