Accuracy evaluation of a two-wire technique for osteotomy positioning in the tibial plateau levelling procedure

作者：Woodbridge N^*; Knuchel Takano A; Brissot H; Nelissen P; Bush M; Owen M

来源：Veterinary and Comparative Orthopaedics and Traumatology, 2014, 27(1): 8-13.

DOI：10.3415/VCOT-13-01-0014

• Two-wire
• tibial plateau levelling osteotorny
• accuracy
• osteotomy

Objective: To evaluate a tibial plateau levelling osteotorny (TPLO) saw blade positioning technique and to retrospectively evaluate the accuracy of the osteotomy position.
Method: Preoperative and postoperative radiographs of 72 cases that had a TPLO surgery using a two-wire technique were reviewed. Three measurements (A1, B1, C1) were obtained in preoperative planning using a computer template system (Orthoview Vet) which mapped the intended osteotomy position. The postoperative radiographs were analysed to determine the varia- bility of these three measurements (A2, B2, C2) and therefore the accuracy of the osteotomy.
Results: On average the least variable measurement was B2 (5%) followed- by C2 (7%) and then A2 (13%). The maximum; mean difference between the intended position and achieved position was 1.5 mm.
Clinical significance: Despite there being a significant difference between the intended and the actual position of-the osteotomy, the variatidn between the intended and actual tibial tuberosity width was small (5%). None of the cases suffered a tibial-tuberosity fractUre, which also supports the clinical value of; this technique. Care must be taken to- avoid inadvertent cutting Of the Kirschner guide wires.

• 出版日期2014