“…Preoperative shoulder stiffness in patients who undergo rotator cuff repair is common, with a reported prevalence of 12.3% to 41.7%. 1,4,8,[18][19][20] However, the definition of shoulder stiffness is one of the controversial points, and authors have used different definitions. 16 Furthermore, the incidence and magnitude of the problem, as well as the treatment protocol, have not been thoroughly studied.…”