[Biomechanical study on different high-strength sutures and suture site for repairing posterior root tear of the medial meniscus].

Objective: To compare biomechanical characteristic of different high-strength sutures and suture sites for repairing posterior root tear of the medial meniscus with modified Mason-Allen technique.

Methods: Forty-eight specimen of medial meniscus of knee joint from fresh porcine (female, aged from 5 to 9 months with an average of 7 months) were chosen and established experimental model. The samples were divided into red zone fixation group and red-white zone fixation group according to suture sites, 24 in each group; and then were randomly divided into 3 subgroups which 8 in each group, and fixed with Ethibond suture, Ultrabraid suture and FiberWire suture, respectively.

[Modified arthroscopic anterior approach for the treatment of shoulder Bankart lesion].

Objective: To explore the effects of single anterior approach under shoulder arthroscopy in the treatment of Bankart injury, and to provide a scheme to overcome the difficulties and simplify the operation process.

Methods: From July 2016 to January 2019, 62 patients with recurrent dislocation caused by Bankart leision were treated under shoulder arthroscopy, including 50 males and 12 females, ranging in age from 19 to 44 years old with an average age of (26.5±6.