Clinical and radiological outcomes of concomitant endoscopic gastrocnemius release with scarf osteotomy.

•The prevalence of gastrocnemius tightness in hallux valgus patient is 12.9%.•224 patients underwent hallux valgus surgery categorized into 2 groups: scarf osteotomy (n=195), scarf and endoscopic gastrocnemius release (combine, n=29).•The two years postoperative clinical and radiological outcomes of patients who underwent scarf osteotomy combined with endoscopic gastrocnemius release is comparable with patients with hallux valgus deformity alone and underwent scarf osteotomy.