The effect of tibial plateau angles on patella ligament thickness after tibial plateau levelling osteotomy in dogs

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dc.contributor.advisor Bester, Elge
dc.contributor.coadvisor Kitshoff, Adriaan
dc.contributor.postgraduate Van de Wetering, Klaas-Jan
dc.date.accessioned 2024-02-06T12:52:01Z
dc.date.available 2024-02-06T12:52:01Z
dc.date.created 2024-05-03
dc.date.issued 2023-09-27
dc.description Mini Dissertation (MMedVet (Small Animal Surgery))--University of Pretoria, 2023. en_US
dc.description.abstract Background. Cranial cruciate ligament disease is a common orthopaedic condition in dogs. Tibial plateau levelling osteotomy (TPLO) is a dynamic repair for cranial cruciate ligament (CrCL) deficient stifle. The functional tibial plateau angle (fTPA) is novel, measured with reference to the ground at normal pelvic limb angulation during standing, unlike the conventional tibial plateau angle (TPA) measured with the stifle and tarsus flexed at right angles. Post-TPLO surgery patients can develop patellar desmitis. Objectives. To describe the fTPA and to determine if there are postoperative threshold tibial plateau angles to predict patellar ligament thickening. Methods. Pre-operative, post-operative and 8-week post-operative radiographs of dogs undergoing TPLO were collected to measure fTPA, TPA and patellar ligament thickness. The fTPA and TPA were compared using descriptive statistics. A thickened patellar ligament was defined as a 100% increase in thickness at 8-weeks compared to pre-operative. Patellar ligament thickening (Yes/No) was assessed according to TPA using receiver operating characteristic curve analysis to determine the Youden index. Results. Mean (±SD) pre-operative and post-operative fTPA were -5.5 (±7.4) and -23.6 (±6.2) and TPA were 26 (±2.9) and 5.9 (±3.1), respectively. The Youden index (area under the curve: 0.7813) indicated a TPA <10° is 100% sensitive and 78% specific for patellar ligament thickening. vii Conclusion. A TPA of <10° results in patella ligament thickening. A negative fTPA can be associated with increased strain in the patella ligament and contribute to thickening of the patella ligament. Further studies are necessary to evaluate the relationship between fTPA and patella ligament thickness. en_US
dc.description.availability Unrestricted en_US
dc.description.degree MMedVet (Small Animal Surgery) en_US
dc.description.department Companion Animal Clinical Studies en_US
dc.description.faculty Faculty of Veterinary Science en_US
dc.identifier.citation * en_US
dc.identifier.doi 10.25403/UPresearchdata.25122008 en_US
dc.identifier.other A2024 en_US
dc.identifier.uri http://hdl.handle.net/2263/94355
dc.language.iso en en_US
dc.publisher University of Pretoria
dc.rights © 2023 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria.
dc.subject UCTD en_US
dc.subject Tibial plateau levelling osteotomy (TPLO) en_US
dc.subject Stifle en_US
dc.subject Desmitis en_US
dc.subject Plateau angle en_US
dc.title The effect of tibial plateau angles on patella ligament thickness after tibial plateau levelling osteotomy in dogs en_US
dc.type Mini Dissertation en_US


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