Fujiidera Animal Hospital Animal Joint Reconstruction Center, Fujiidera-City, Osaka, Japan.
Department of System Physiology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yoshida, Yamaguchi, Japan.
Vet Comp Orthop Traumatol. 2020 May;33(3):183-188. doi: 10.1055/s-0039-1700990. Epub 2020 Feb 23.
The aim of this study was to evaluate objective limb function using force plate gait analysis after tibial plateau levelling osteotomy (TPLO) in small breed dogs with cranial cruciate ligament rupture (CCLR).
Small breed dogs (15 kg or less) with unilateral CCLR treated with TPLO were evaluated using symmetry index (SI) of peak vertical force (PVF), vertical impulse and vector magnitude at PVF performed preoperatively and at 1, 2, 4 and 6 months postoperatively after routine TPLO surgery.
Twelve dogs met the inclusion criteria. Hindlimb function was markedly improved after TPLO, with all three postoperative SI significantly higher after a month than preoperative values ( < 0.01). At 2 months after surgery, the SI was nearly normalized to 1.0 (preoperative SI: 0.50 ± 0.20, 0.44 ± 0.19 and 0.51 ± 0.19, and 2 months postoperative SI: 0.92 ± 0.16, 0.90 ± 0.18 and 0.92 ± 0.16 respectively). Complications were noted in two dogs (fibular fracture and a partial implant failure), neither of which required a revision surgery for acceptable functional recovery.
The objective limb function of the affected hindlimb improved continuously after surgery and reached a near normal value at 6 months after surgery. It was suggested that TPLO for small breed dogs had good outcomes based on force plate gait analysis.
本研究旨在评估胫骨平台平整术（TPLO）治疗小型犬十字韧带断裂（CCLR）后，使用足底压力步态分析评估客观肢体功能。
使用术前和术后 1、2、4 和 6 个月的峰垂直力（PVF）、垂直冲量和 PVF 矢量幅度的对称性指数（SI）评估接受 TPLO 单侧 CCLR 治疗的小型犬（15kg 或以下）。
12 只狗符合纳入标准。TPLO 后后肢功能明显改善，所有三个术后 SI 均在术后一个月后明显高于术前值（<0.01）。术后 2 个月，SI 接近正常化至 1.0（术前 SI：0.50±0.20、0.44±0.19 和 0.51±0.19，术后 2 个月 SI：0.92±0.16、0.90±0.18 和 0.92±0.16）。两只狗（腓骨骨折和部分植入物失败）出现并发症，但均无需进行可接受的功能恢复的翻修手术。
术后患肢的客观肢体功能持续改善，术后 6 个月达到接近正常水平。基于足底压力步态分析，建议 TPLO 治疗小型犬具有良好的效果。
