Theses and Dissertations

ORCID

0000-0001-5559-0077

Issuing Body

Mississippi State University

Advisor

Jaffe, Michael

Committee Member

Castaldo, Sarah

Committee Member

Elder, Steven H.

Date of Degree

8-9-2022

Document Type

Graduate Thesis - Open Access

Major

Veterinary Medical Science

Degree Name

Master of Science (M.S.)

College

College of Veterinary Medicine

Department

Department of Clinical Sciences

Abstract

Twelve pairs of cadaveric pelvic limbs were harvested from skeletally mature dogs. Tibias were randomly assigned pairwise to two study groups: locking buttress screw fixation (LBS) and bone-screw-fastener fixation (BSF). A tibial plateau leveling osteotomy (TPLO) was performed. Each specimen was positioned in a servohydraulic testing machine to simulate physiological orientation and loading at the mid-point of the stance phase at the walk. Cyclic loading was performed for 30,000 cycles at 4Hz with a peak-load of 1000N. The cyclic test was then continued by stepwise increasing the peak-load at a rate of 75N per 500 cycles until failure of the construct. The findings of this current study suggest that stabilization of the TPLO with BSF in the proximal part of a locking TPLO plate provided similar biomechanical stability under cyclic axial loading conditions as the LBS. BSF may be an acceptable alternative to LBS for TPLO.

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