[Comparison of clinical efficacy of two different arthroscopic release methods for the treatment of primary frozen shoulder].

Objective: To compare clinical effects of inside-out technique and outside-in technique for the treatment of idiopathic frozen shoulder under arthroscopy.

Methods: From April 2015 to July 2019, 65 patients with primary frozen shoulder were divided into observation group and control group according to different treatment methods. In observation group, there were 32 cases, including 14 males and 18 females, aged 48 to 64 (54.