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Vet Surg. 2019 May;48(4):505-512. doi: 10.1111/vsu.13151. Epub 2019 Jan 6.

Influence of fixation systems on complications after tibial plateau leveling osteotomy in dogs greater than 45.4 kilograms (100 lb).

Author information

1
Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina.
2
Department of Clinical Sciences, College of Veterinary Medicine, University of Minnesota, St Paul, Minnesota.
3
Department of Health Management, Atlantic Veterinary College, University of Prince Edward Island, Charlottetown, Prince Edward, Canada.
4
Melbourne School of Health Sciences, University of Melbourne, Melbourne, Victoria, Australia.
5
Dallas Veterinary Surgical Center, Dallas, Texas.

Abstract

OBJECTIVE:

To determine the influence of 3 fixation systems on complications rate after tibial plateau leveling osteotomy (TPLO) in dogs >45.4 kg.

STUDY DESIGN:

Retrospective case series.

SAMPLE POPULATION:

Dogs (N = 287, 342 stifles) >45.4 kg with cranial cruciate ligament tear treated with TPLO.

METHODS:

The medical records of dogs treated with TPLO were reviewed for fixation and postoperative complications, with a follow-up of at least 6 weeks. A random effects logistic regression model was used to evaluate the association between the type of TPLO fixation system and complications.

RESULTS:

The fixation systems included a 3.5-mm broad TPLO plate alone (8P; 78.4%), a 3.5-mm broad TPLO plate with SOP (String of Pearls) plate (8AP; 14.9%), and a 3.5-mm standard TPLO plate (6P; 6.7%). Among the included stifles, 214 (62.6%) fixation systems were classified as locking, and 128 (37.4%) were classified as nonlocking. The fixation system was predictive of complications. The 8P had the lowest odds ratio for complication among the 3 fixation systems. Odds of developing complications were higher with the 8AP fixation system than with the 8P fixation system. Locking fixation eliminated the association between weight and complication rate.

CONCLUSION:

Fixation of a TPLO with the 8AP increased the risk of complications compared with the 8P in this population of large dogs.

CLINICAL SIGNIFICANCE:

Locking fixation of TPLO with a 3.5-mm broad TPLO plate alone should be considered in large dogs because it may reduce complications.

PMID:
30614018
DOI:
10.1111/vsu.13151
[Indexed for MEDLINE]

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