AI Article Synopsis
- The study aimed to compare the tensile strength of the native scapholunate ligament (SLL) with an all-suture anchor construct using a cadaver model.
- The researchers found that the mean peak load-to-failure for the native SLL was 273 N, while the all-suture anchor construct had a mean of 172 N, which is about 75% of the native strength.
- The difference in tensile strength between the two was not statistically significant (p = 0.157), suggesting that while the sutures are weaker, they are still comparable to the native ligament.
Article Abstract
Our aim was to compare the tensile strength of the native scapholunate ligament (SLL) with that of an all-suture anchor construct in a cadaveric model. The scaphoid and lunate were isolated, preserving all segments of the SLL. Using a servohydraulic testing machine, we increased the load until peak load-to-failure of the native SLL was reached in nine specimens (mean ± standard deviation, 273 ± 132 N). Using the same specimens, two JuggerKnot 1.4-mm suture anchors (Zimmer Biomet) were placed into the lunate and tensioned through transosseous tunnels in the scaphoid. Sutures were tied over the radial nonarticular aspect of the scaphoid. Load-to-failure testing was repeated. The mean peak load-to-failure for the all-suture anchor constructs was 172 ± 59 N versus 231 ± 117 N for the native group (p = 0.157). This represents approximately 75% of the native ligament strength. (Journal of Surgical Orthopaedic Advances 29(3):169-172, 2020).
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