TY - JOUR
T1 - Effect of Tibial Plateau Angle on Cranial Cruciate Ligament Strain
T2 - An Ex Vivo Study in the Dog
AU - Haynes, Kevin H.
AU - Biskup, Jeffrey
AU - Freeman, Andrew
AU - Conzemius, Michael G
N1 - Publisher Copyright:
© 2014 by The American College of Veterinary Surgeons.
PY - 2015/1/1
Y1 - 2015/1/1
N2 - Objective: To evaluate the relationship between tibial plateau angle (TPA) and strain in the intact cranial cruciate ligament (CCL) during axial loading. Study Design: Ex vivo mechanical testing study. Sample Population: Cadaveric canine stifles (n=6). Methods: A bicentric and uni-radial Slocum saw blade was used to perform the osteotomy on each stifle and a custom designed plate was secured to the leg. Each stifle was loaded and CCL strain and axial displacement were recorded. TPA was adjusted to -20°, -10°, 0°, +10°, +20° of normal. Change in the strain was assessed during the axial loading period. Results: For all specimens, linear displacement of the femur and CCL strain increased with increasing axial load. Mean change in strain was 4.41, 5.26, 6.02, 6.3, and 7.39 at -20°, -10°, 0°, 10°, and 20°, respectively. The R-squared for the linear regression equation was 0.91, suggesting a strong relationship between change in TPA and CCL strain. Conclusions: The mechanical testing model used found CCL strain increased with increasing axial load regardless of the TPA. Decreasing TPA decreased strain in the intact CCL.
AB - Objective: To evaluate the relationship between tibial plateau angle (TPA) and strain in the intact cranial cruciate ligament (CCL) during axial loading. Study Design: Ex vivo mechanical testing study. Sample Population: Cadaveric canine stifles (n=6). Methods: A bicentric and uni-radial Slocum saw blade was used to perform the osteotomy on each stifle and a custom designed plate was secured to the leg. Each stifle was loaded and CCL strain and axial displacement were recorded. TPA was adjusted to -20°, -10°, 0°, +10°, +20° of normal. Change in the strain was assessed during the axial loading period. Results: For all specimens, linear displacement of the femur and CCL strain increased with increasing axial load. Mean change in strain was 4.41, 5.26, 6.02, 6.3, and 7.39 at -20°, -10°, 0°, 10°, and 20°, respectively. The R-squared for the linear regression equation was 0.91, suggesting a strong relationship between change in TPA and CCL strain. Conclusions: The mechanical testing model used found CCL strain increased with increasing axial load regardless of the TPA. Decreasing TPA decreased strain in the intact CCL.
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U2 - 10.1111/j.1532-950X.2014.12219.x
DO - 10.1111/j.1532-950X.2014.12219.x
M3 - Article
C2 - 24902869
AN - SCOPUS:84919847142
SN - 0161-3499
VL - 44
SP - 46
EP - 49
JO - Veterinary Surgery
JF - Veterinary Surgery
IS - 1
ER -