Zone II flexor tendon repair using double embedded lasso lock knot suturing technique

Abstract

Objective To summarize the clinical outcomes of repairing Zone Ⅱflexor digitorum tendon injury using the double embedded lasso lock knot technique. Methods From January 2008 to September 2014, the double embedded lasso lock knot technique was employed to repair Zone Ⅱ flexor digitorum tendon injury in 45 fingers of 37 cases. Postoperatively the treatment outcomes were evaluated by the total active motion (TAM) scale. Results Primary wound healing was achieved in 43 fingers of 35 cases, while 2 fingers in 2 cases has secondary wound healing. Thirty-one cases with 35 fingers had postoperative follow-up ranging from 12 to 17 months, with an average of 13.7 months. According to the TAM scale, results were excellent in 29 fingers, good in 5 fingers, and fair in 1 finger. The overall satisfactory rate was 97.1%. Conclusion The double embedded lasso lock knot technique has good anti-skid and anti-split effect with little suture exposure. It allows early functional exercise to effectively prevent tendon adhesions and thus lead to satisfactory results in repairing Zone Ⅱ flexor digitorum tendon injuries. Key words: Tendon injuries; Treatment outcome; Suture; Lasso lock knot