Predictive Variables for Complications after TPLO with Stifle Inspection by Arthrotomy in 1000 Consecutive Dogs

Objective

To evaluate risk factors for complications, including meniscal injury and infection, after tibial plateau leveling osteotomy (TPLO) in dogs.

Methods

Medical records (January 2004–March 2009) were reviewed for dogs operated sequentially by medial arthrotomy with instrumented meniscal inspec- tion (IMI) and TPLO by a single experienced surgeon. Multiple logistic regression models were used to evaluate independent contribution of risk factors to the re- corded complications.

Results

Overall complication rate was 14.8%, of which 6.6% were major com- plications. Incidence of primary meniscal injury (PMI) was 33.2%, and subse- quent meniscal injury (SMI) 2.8%. Postoperative infection occurred in 6.6% dogs. Bilateral CCL rupture was diagnosed in 14.6% dogs and no statistically signifi- cant complication incidence difference was recorded for simultaneous or staged bilateral surgical procedures. Administration of postoperative antibacterial ther- apy and being a Labrador reduced infection incidence, whereas increased body- weight and being an intact male increased infection risk. Increased body-weight and complete (versus partial) CCL rupture were significant predictors of overall complications.

Clinical relevance

Complication rate after TPLO with arthrotomy and IMI is lower than previously reported, bilateral simultaneous TPLO is reasonable, and incidence of major complications compares favorably with general orthopedic procedures.

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