Influence of Locking Plates in Tibial Plateau Angle Changes After Tibial Plateau Leveling Osteotomy (TPLO) in Dogs with Cranial Cruciate Ligament Rupture.

VECCHIO NE; VECCHIO LE; TOBIAS T; SINGH A

Breckenridge, Colorado

Conferencia; VETERINARY ORTHOPEDIC SOCIETY 37th Annual Conference; 2010

Veterinary Orthopedic Society

Introduction: Tibial plateau angle increases after TPLO performed as a treatment of naturally occurring CCLR in dogs. We speculate that the loss of reduction is related to a repositioning (settling) of the proximal fragment in the immediate postoperative period. Here we compare two populations of dogs (n=120) with naturally occurring CCLR treated with TPLO. Locking plates (fixed angle fixation) were used in one group and non-locking plates in the other. Materials and Methods: Twenty TPLOs performed were included in the first group. All dogs received a locking plate. 100 TPLOs were included in the second group. All dogs in the received a non-locking plate. TPA measurements on mediolateral radiographs were performed pre-, immediately post-operative, and at recheck. ANOVA was applied to characterize groups. Paired T-test was used to determine significance of difference. Results: For the locking group, the TPA change (recheck TPA - post operative TPA) = 0.56o (SDev=1.4o)(p=0.078) was not significant. In the non-locking group, the TPA change = 2.96o (SDev=3.5o) (p