Effect of Tibial Plateau Angle on Cranial Cruciate Ligament Strain: An Ex Vivo Study in the Dog. Issue 1 (6th June 2014)

• Record Type: Journal Article
• Authors: Haynes, Kevin H.; Biskup, Jeffrey; Freeman, Andrew; Conzemius, Michael G.
• Is Part Of: Veterinary surgery. Volume 44:Issue 1(2015)
• Page Start: 46
• Page End: 49
• Publication Date: 2014-06-06
• Subjects: Veterinary surgery -- Periodicals; Veterinary Medicine -- Periodicals; Surgery -- Periodicals; Societies, Medical -- Periodicals; 636.0897
• DOI: 10.1111/j.1532-950X.2014.12219.x
• Languages: English
• ISSNs: 0161-3499

Abstract

<abstract abstract-type="main"> <title> <x xml:space="preserve">Abstract</x> </title> <sec id="vsu12219-sec-0001" sec-type="section"> <title>Objective</title> <p>To evaluate the relationship between tibial plateau angle (TPA) and strain in the intact cranial cruciate ligament (CCL) during axial loading.</p> </sec> <sec id="vsu12219-sec-0002" sec-type="section"> <title>Study Design</title> <p> <italic>Ex vivo</italic> mechanical testing study.</p> </sec> <sec id="vsu12219-sec-0003" sec-type="section"> <title>Sample Population</title> <p>Cadaveric canine stifles (n = 6).</p> </sec> <sec id="vsu12219-sec-0004" sec-type="section"> <title>Methods</title> <p>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.</p> </sec> <sec id="vsu12219-sec-0005" sec-type="section"> <title>Results</title> <p>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.</p> </sec> <sec id="vsu12219-sec-0006" sec-type="section"> <title>Conclusions</title> <p>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.</p> </sec> </abstract>