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Mechanical Properties of Canine Patella‐Ligament‐Tibia Segment
Author(s) -
Biskup Jeffery,
Freeman Andy,
Camisa Will,
Innes John,
Conzemius Michael
Publication year - 2014
Publication title -
veterinary surgery
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.652
H-Index - 79
eISSN - 1532-950X
pISSN - 0161-3499
DOI - 10.1111/j.1532-950x.2013.12109.x
Subject(s) - medicine , calipers , tibia , patella , patellar ligament , cruciate ligament , weight bearing , ligament , ex vivo , anatomy , tibial fracture , nuclear medicine , in vivo , surgery , patellar tendon , anterior cruciate ligament , physics , microbiology and biotechnology , biology , optics
Objective To test the ex vivo mechanical properties of canine patella‐ligament‐tibia (PLT) segment and establish the relationship between donor size and PLT dimensions to the mechanical properties of PLT grafts. Study Design Ex vivo mechanical testing study. Sample Population Canine PLT segments (n = 21 dogs; 42 PLT). Methods Morphometric measurements of PLT segments were taken from computed tomography (CT) images and compared with results obtained using calipers. PLT were tested to failure at a rate of 100% length/s. Mechanical properties and failure mode were recorded. Results PLT width and thickness ( P < .001 for both) measured by calipers were significantly lower than those taken from CT images. Thirty‐five (83%) specimens failed by avulsion fracture from the patella, 1 failed mid‐ligament, and 6 failed by tibial fracture. Dog weight and PLT length had the strongest Pearson's r value when correlated with load at failure (r = 0.73, 0.81, respectively). Conclusion Dog weight and PLT length were the best predictors of load at failure. PLT failure load of dogs weighing >25 kg were similar to those reported for the cranial cruciate ligament (CCL) suggesting that the PLT may be a suitable allograft for CCL replacement.