Long Term Functional Outcome of Tibial Tuberosity Advancement vs. Tibial Plateau Leveling Osteotomy and Extracapsular Repair in a Heterogeneous Population of XXXX .

@entity235 @entity397 @entity4957
OBJECTIVE: To determine a long term function of tibial tuberosity advancement (TTA) for treatment of @entity397 (CCL) in @entity235 , and to compare this to the long term function of previously reported @entity4957 ( @entity4957 ), extracapsular reconstruction (ECR), and a population of normal @entity235 . STUDY DESIGN: Prospective clinical trial. ANIMALS: @entity235 with unilateral ruptured CCL treated with TTA (n   =   14), @entity4957 (n   =   15), and ECR (n   =   23), and normal adult @entity235 (control, n   =   80). MATERIALS AND METHODS: Force plate gait analysis was performed at 1 time point for the normal control group and preoperatively, and at 2 and 8 weeks and 6 and 12 months postoperatively for the treatment groups. Using serial force plates, symmetry indices (SI) were calculated between the operated and unoperated pelvic limbs for peak vertical force (PVF), contact time (CT), and vertical impulse (VI). Ground reaction forces (GRF) of the treatment and control group were compared using a general linear model. RESULTS: Walk SI for @entity235 with TTA were not significantly different from the control group at 12 months postoperatively. At the trot, neither TTA nor ECR achieved normal GRF. SI of the @entity4957 group were not different from the normal control group by 6-12 months postoperatively. CONCLUSION: At the walk, TTA achieves normal function by 12 months; however, at the trot TTA is indistinguishable from ECR. @entity4957 resulted in operated limb function that was similar to the control population by 6-12 months postoperatively at the walk and the trot.
