Biomechanical comparison of double grasping repair versus cross-locked cruciate flexor tendon repair

Hand : Official Journal of the American Association for Hand Surgery
C Liam DwyerJohn D Lubahn

Abstract

This study was conducted to compare the in vitro biomechanical properties of tensile strength and gap resistance of a double grasping loop (DGL) flexor tendon repair with the established four-strand cross-locked cruciate (CLC) flexor tendon repair, both with an interlocking horizontal mattress (IHM) epitendinous suture. The hypothesis is that the DGL-IHM method which utilizes two looped core sutures, grasping and locking loops, and a single intralesional knot will have greater strength and increased gap resistance than the CLC-IHM method. Forty porcine tendons were evenly assigned to either the DGL-IHM or CLC-IHM group. The tendon repair strength, 2-mm gap force and load to failure, was measured under a constant rate of distraction. The stiffness of tendon repair was calculated and the method of repair failure was analyzed. The CLC-IHM group exhibited a statistically significant greater resistance to gapping, a statistically significant higher load to 2-mm gapping (62.0 N), and load to failure (99.7 N) than the DGL-IHM group (37.1 N and 75.1 N, respectively). Ninety percent of CLC-IHM failures were a result of knot failure whereas 30 % of the DGL-IHM group exhibited knot failure. This study demonstrates that the CLC-IHM flexor ...Continue Reading

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Citations

May 16, 2018·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Atesch AteschrangSufian S Ahmad

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Methods Mentioned

BETA
force measurements
pullout

Software Mentioned

SPSS

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