Arthroscopic Repair of Subscapularis Tendon Using a Percutaneous Continuous Sewing Machine-Like Suture Technique Through a Single Working Portal

Tearing of the subscapularis tendon is a common shoulder injury that typically requires arthroscopic repair. The suture-passing device is a standard tool for repairing the subscapularis tendon. However, it poses the risk of device breakage and may cause additional damage to the tendon. Additionally, a traditional suture hook technique using traction sutures necessitate repeated puncturing, which increases both the complexity of the procedure and the risk of tendon damage. In this Technical Note, we describe an improvement on the previously reported continuous suturing technique by introducing a percutaneous, sewing machine-like continuous subscapularis tendon suture method through a single working portal. The key innovation in our technique is the use of a percutaneous spinal needle for suturing, along with the sewing machine-like continuous suture approach. By eliminating the traditional suture-passing devices and traction sutures, our method allows for clearer suture management; more flexible puncture site selection; and a faster, simpler suture process.