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The effect of Tibial plateau levelling osteotomy on stifle extensor mechanism load: A canine ex vivo study

Drew, J.O., Glyde, M.R., Hosgood, G.L. and Hayes, A.J. (2018) The effect of Tibial plateau levelling osteotomy on stifle extensor mechanism load: A canine ex vivo study. Veterinary and Comparative Orthopaedics and Traumatology, 31 (2). pp. 131-136.

Abstract

OBJECTIVE:
To evaluate the effect of tibial plateau levelling osteotomy on stifle extensor mechanism load in an ex vivo cruciate-intact canine cadaveric model.

STUDY DESIGN:
Ex vivo mechanical testing study.

ANIMALS:
Cadaveric canine pelvic limbs (n = 6).

MATERIALS AND METHODS:
A 21-mm tibial radial osteotomy was performed on pelvic limbs (n = 6) prior to being mounted into a load-bearing limb press. The proximal tibial segment was incrementally rotated until the anatomical tibial plateau angle had been rotated to at least 1°. The proportional change in stifle extensor mechanism load between the anatomical tibial plateau angle and the neutralized (∼6.5 degrees) and over-rotated (∼1°) tibial plateau angle was analysed using a one-sample t-test against a null hypothesis of no change. A p-value ≤0.05 was considered significant.

RESULTS:
There was no significant change in the stifle extensor mechanism load from the anatomical tibial plateau angle (308 N [261-355 N]) to the neutralized tibial plateau angle (313 N [254-372 N]; p =.81), or from the anatomical tibial plateau angle to the over-rotated tibial plateau angle (303 N [254-352 N; p = 0.67).

CONCLUSION:
Tibial plateau levelling osteotomy does not significantly alter stifle extensor mechanism load at either a neutralized or over-rotated tibial plateau angle in our cruciate-intact model.

Publication Type: Journal Article
Murdoch Affiliation: School of Veterinary and Life Sciences
Publisher: Schattauer
Copyright: © 2018 Georg Thieme Verlag KG
Publishers Website: https://www.thieme-connect.com/products/ejournals/...
URI: http://researchrepository.murdoch.edu.au/id/eprint/40602
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