Feng SM, Sun QQ, Wang AG, et al. - In this study, the surgical technique and long-term clinical outcomes of all-inside arthroscopic treatment were investigated for flexor hallucis longus (FHL) tendon impingement syndrome. Researchers retrospectively examined 34 FHL tendon impingement syndrome patients with complete follow-up data who were admitted from June 2015 to August 2018 and had undergone the all-inside arthroscopy technique. This study's findings demonstrate that advantages of all-inside posterior arthroscopic partial muscle belly resection for the treatment of FHL tendon impingement syndrome include small surgical trauma, fast functional recovery, and reliable outcomes. This method is thus worthy of clinical attention and promotion.