Takayama K, et al. - This research was sought to correlate the clinical efficacy of this technique with that of arthroscopic superior capsular reconstruction. Researchers conducted a retrospective cohort study including a total of 46 consecutive patients with Hamada classification Grades 2 to 3b who were treated between June 2014 and February 2018 with superior capsular reconstruction conducted by a single surgeon for irreparable rotator cuff tears (≥ Grade 3 Goutallier classification) applying autologous tensor fascia lata. This study assessed the duration of operation, length of skin incision of the lateral portal applied to insert the graft, graft size (length, width, and thickness), American Shoulder and Elbow Surgeons scores, range of motion, and graft re-tear rate. This study enrolled 46 individuals who had undergone arthroscopic superior capsular reconstruction (n = 20) or mini open superior capsular reconstruction (n = 26). In both the arthroscopic and mini-open superior capsular reconstruction groups, good clinical outcomes were obtained. It was indicated that surgical stress experienced by the patients who had undergone mini open superior capsular reconstruction was similar to that experienced by those who had undergone the arthroscopic procedure, as no significant variation was recorded in the length of the skin incision. This research exhibits that mini-open superior capsular reconstruction, which contributes to decreased operation duration and difficulty correlated with the surgical technique, is an effective and alternative technique to arthroscopic superior capsular reconstruction.