Woodbridge N, Corr S A, Grierson J, Arthurs G
Dick White Referrals, Six Mile Bottom, Suffolk, CB8 0UH, UK.
Vet Comp Orthop Traumatol. 2011;24(6):445-9. doi: 10.3415/VCOT-10-06-0090. Epub 2011 Oct 6.
To retrospectively evaluate mediolateral translation of the proximal tibial segment (tibial plateau) after tibial plateau levelling osteotomy (TPLO), stabilised with three types of plate.
Pre- and postoperative radiographs of 79 dogs that had TPLO surgery using three different types of plates were reviewed. Two plate types incorporated non-locking screws: Slocum (22 cases) and Orthomed Delta (33 cases) plates. The third plate type incorporated locking screws: Synthes TPLO Locking Compression Plate (LCP) (24 cases). The radiographs were viewed by three Diplomate surgeons who were blinded to the type of implant used. Medial or lateral translation of the proximal tibial plateau relative to the tibial diaphysis was assessed and measured at the lateral tibial cortex at the osteotomy site.
Mean lateral translation of the tibial plateau was significantly greater when using the Synthes TPLO LCP with locking screws (+2.1 mm) compared to the non-locking Slocum (+0.4 mm) or Orthomed Delta (0.0 mm) plates.
The use of the Synthes TPLO LCP will maintain a malalignment of the tibial plateau. Accurate alignment of the tibial plateau must be ensured prior to application of the Synthes TPLO LCP.
回顾性评估使用三种不同类型钢板固定的胫骨平台平整截骨术(TPLO)后胫骨近端节段(胫骨平台)的内外侧移位情况。
回顾了79只接受TPLO手术并使用三种不同类型钢板的犬的术前和术后X线片。两种钢板类型采用非锁定螺钉:Slocum钢板(22例)和Orthomed Delta钢板(33例)。第三种钢板类型采用锁定螺钉:Synthes TPLO锁定加压钢板(LCP)(24例)。由三位对所用植入物类型不知情的专科医生查看X线片。评估并测量在截骨部位胫骨外侧皮质处胫骨近端平台相对于胫骨干的内侧或外侧移位情况。
与使用非锁定的Slocum钢板(+0.4 mm)或Orthomed Delta钢板(0.0 mm)相比,使用带有锁定螺钉的Synthes TPLO LCP时,胫骨平台的平均外侧移位明显更大(+2.1 mm)。
使用Synthes TPLO LCP会导致胫骨平台排列不齐。在应用Synthes TPLO LCP之前,必须确保胫骨平台精确对齐。