Harrison Jacqueline M, Muir Peter
Comparative Orthopaedic Research Laboratory, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI 53706, USA.
Case Rep Vet Med. 2024 May 20;2024:6681788. doi: 10.1155/2024/6681788. eCollection 2024.
OBJECTIVE: The objective of this study was to examine outcomes in dogs with cruciate ligament rupture (CR) that had chronic radiographic cranial tibial subluxation at the time of osteotomy healing after tibial plateau leveling osteotomy (TPLO). . Retrospective case analysis of 12 dogs with prospective follow-up. Four of the 12 dogs were prospectively studied 12-24 months after surgery to assess long-term radiographic and clinical outcomes. RESULTS: Three of the 4 dogs showed improvement in radiographic cranial tibial subluxation at long-term follow-up. In the other dog, minimally improved cranial tibial subluxation was associated with severe lameness. At long-term follow-up, gait analysis in 3 dogs with improved subluxation showed the symmetry of weight-bearing within 10% for peak vertical force, and no clinically lameness. Preoperative tibial plateau angle (TPA) and radiographic osteoarthritis in dogs with prospective follow-up and all dogs treated with TPLO surgery in the study period were not significantly different. CONCLUSION: Dogs with chronic radiographic cranial tibial subluxation are acceptable candidates for TPLO. Radiographic improvement in stifle reduction may take more than 10 weeks. The dog with long-term persistent subluxation also had a higher TPA over time, suggestive of ineffective surgical correction with TPLO and treatment failure.
目的:本研究的目的是检查在胫骨平台水平截骨术(TPLO)后截骨愈合时患有慢性放射学上的胫骨髁间嵴半脱位的十字韧带断裂(CR)犬的预后情况。对12只犬进行回顾性病例分析并进行前瞻性随访。对12只犬中的4只在术后12 - 24个月进行前瞻性研究,以评估长期的放射学和临床预后。 结果:在长期随访中,4只犬中有3只放射学上的胫骨髁间嵴半脱位情况有所改善。在另一只犬中,胫骨髁间嵴半脱位改善甚微并伴有严重跛行。在长期随访中,3只半脱位情况改善的犬的步态分析显示,峰值垂直力下负重对称性在10%以内,且无临床跛行。前瞻性随访的犬以及研究期间所有接受TPLO手术治疗的犬的术前胫骨平台角(TPA)和放射学骨关节炎情况无显著差异。 结论:患有慢性放射学上的胫骨髁间嵴半脱位的犬是TPLO的合适候选对象。膝关节复位的放射学改善可能需要超过10周时间。长期持续半脱位的犬随着时间推移TPA也更高,提示TPLO手术矫正无效且治疗失败。
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