Flexor Tendon

Flexor Tendon Repair With a Knotless Barbed Suture: A Comparative Biomechanical Study

Marrero-Amadeo IC, Chauhan A, Warden SJ, et al (Indiana Univ Schools of Medicine, Indianapolis) J Hand Surg 36A:1204-1208, 2011^§

Abstract

Purpose

To test the hypothesis that a flexor tendon repair with only a knotless barbed suture technique provides a repair with a greater maximal load to failure and 2-mm gapping resistance than a traditional technique using a 4-strand core plus a running-locking epitendinous suture.

Methods

We assigned 41 fresh-frozen cadaveric flexor digitorum profundus tendons for repair by either a traditional technique using a 4-strand core (Tajima and horizontal mattress) plus a running-locking epitendinous suture (n = 20) or a bidirectional barbed suture technique using a knotless, 4-strand core secured with 3 transverse passes (n = 21). A biomechanical study was performed on each tendon-suture construct and the tendons were linearly distracted to failure at 100   mm/min. The maximal tensile load to failure, 2-mm gapping tensile load, and mode of failure were determined and statistically compared.

Results

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