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Tibial Plateau Leveling Osteotomy in Small Breed Dogs With High Tibial Plateau Angles Using a 4-Hole 1.9/2.5 mm Locking T-Plate

Authors

  • Philip G. Witte BSc, BVSc, CertAVP,

    Corresponding author
    1. Southern Counties Veterinary Specialists, Ringwood, United Kingdom
    • Corresponding Author

      Philip G. Witte, BSc, BVSc, CertAVP, Southern Counties Veterinary Specialists, 6 Forest Corner Farm, Hangersley, Ringwood, Hampshire BH24 3JW, United Kingdom.

      E-mail: phil.witte@scvetspecialists.co.uk

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  • Harry W. Scott BVSc, CertSAD, CBiol, FSB, DSAS(Orth), FRCVS

    1. Southern Counties Veterinary Specialists, Ringwood, United Kingdom
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  • Presented in part at the BSAVA Congress, Birmingham, UK, April 11–15, 2012.

Abstract

Objectives

To report clinical experiences with tibial plateau leveling osteotomy (TPLO) to address cranial cruciate ligament (CCL) disease in small breed dogs with high tibial plateau angles (TPA) using a specific 4-hole locking T-plate.

Study design

Retrospective case series.

Animals

Small breed dogs (<15 kg) with high TPA (>30°): n = 19 (29 CCL ruptures).

Methods

TPLO was performed by standard technique using a 1.9/2.5 mm 4-hole locking T-plate. Preoperative, immediate postoperative, and 6–8 weeks postoperative TPA were measured from radiographs. Lameness was scored subjectively preoperatively and 6–8 weeks postoperatively. Mid to long term follow-up was by client telephone questionnaire (mean, 12.1 months after surgery).

Results

Mean ± SD preoperative TPA was 37.0 ± 4.9°, immediate postoperative TPA, 6.4 ± 2.8° and 6–8 weeks postoperative TPA, 8.0 ± 4.9°. Postoperative complications occurred in 4 dogs (13.8%) all of which had been operated as single-session bilateral procedures. Three stifles had failure of a single screw and postoperative increase in TPA. Periprosthetic infection necessitated plate removal in 1 dog. Lameness scores by veterinary assessment reduced from mean 3.4/5 preoperatively to 0.4/5 at 6–8 weeks postoperatively. Mid to long-term follow-up revealed no lameness by owner assessment.

Conclusion

A 4-hole 1.9/2.5 mm locking T-plate may be used in the stabilization of unilateral TPLO in small breed dogs with high TPA.

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