Mechanical Evaluation of Knee Ligament Allografts for Thumb Metacarpophalangeal and Finger Proximal Interphalangeal Reconstruction

Block, Tennyson; Kulber, David A.; Sun, Michael; An, Tonya; Nelson, Trevor; Yoshida, Ruriko; Metzger, Melodie F.

doi:10.1016/j.jhsa.2022.08.012

Cited by 1 publication

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“…The collateral ligaments of the knee have recently been described as an alternative graft source for small joint reconstruction in the hand [31]. Knee collateral ligaments may also provide an alternative graft choice for reconstruction of the elbow UCL as they meet the length requirement for standard UCLR techniques [5].…”

Section: Introductionmentioning

confidence: 99%

Biomechanical Properties of Knee Medial Collateral Ligament Compared to Palmaris Longus for Ulnar Collateral Ligament Reconstruction

et al. 2023

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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.

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Section: Introductionmentioning

confidence: 99%