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- Title
Biomechanical Properties of Knee Medial Collateral Ligament Compared to Palmaris Longus for Ulnar Collateral Ligament Reconstruction.
- Authors
Huang, Dave; Foster, Lukas; Stone, Michael; Kulber, David; Metzger, Melodie F.
- Abstract
Ulnar collateral ligament reconstruction (UCLR) is frequently performed among injured overhead-throwing athletes. One of the most common graft choices when performing a UCLR is the ipsilateral palmaris longus tendon (PL). The purpose of this study was to investigate the material properties of aseptically processed cadaveric knee collateral ligaments (kMCL) as a potential graft source for UCLR and compare them to the gold standard PL autograft. Each PL and kMCL cadaveric sample was subjected to cyclic preconditioning, stress relaxation, and load-to-failure testing, and the mechanical properties were recorded. PL samples exhibited a greater average decrease in stress compared to the kMCL samples during the stress-relaxation test (p < 0.0001). PL samples also demonstrated a greater average Young's modulus in the linear region of the stress–strain curve compared to the kMCL samples (p < 0.01). The average yield strain and maximum strain of kMCL samples were significantly greater than the PL, p = 0.03 and 0.02, respectively. Both graft materials had comparable maximum toughness and demonstrated a similar ability to deform plastically without rupture. The clinical significance of our result is that prepared knee medial collateral ligament allografts may provide a viable graft material for use in the reconstruction of elbow ligaments.
- Subjects
MEDIAL collateral ligament (Knee); ULNAR collateral ligament; ELBOW; COLLATERAL ligament; YOUNG'S modulus; STRESS-strain curves
- Publication
Annals of Biomedical Engineering, 2023, Vol 51, Issue 8, p1795
- ISSN
0090-6964
- Publication type
Article
- DOI
10.1007/s10439-023-03188-z