Locking plate and screw fixation after tibial plateau leveling osteotomy reduces postoperative infection rate in dogs over 50 kg


To assess the influence of locking plate and screw implants on postoperative infection rate in dogs >50 kg undergoing tibial plateau leveling osteotomy (TPLO).


Medical records (January 2003–September 2011) were reviewed for dogs that had TPLO. Type of implant used (locking plate and screw fixation [LP] and dynamic compression plate and screw fixation [NLP]), use of postoperative antibiotics and presence of postoperative infection were recorded. Multivariate analysis was performed.


Forty dogs (21.3%) had clinical signs compatible with postoperative infection. A positive microbiology swab was available in 16/40 cases (40%). Administration of postoperative antibiotics was associated with a lower incidence of infection (P = .006) and the use of NLP was associated with a higher incidence of infection (P = .01).

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