Danielski Alan, Farrell Michael
Department of Orthopaedic, Davies Veterinary Specialists, Higham Gobion, Hitchin, United Kingdom.
Vet Comp Orthop Traumatol. 2018 Sep;31(5):385-389. doi: 10.1055/s-0038-1651517. Epub 2018 Jun 20.
An 8-month-old American Bulldog was presented for assessment of bilateral thoracic limb lameness. Computed tomographic imaging revealed large, deep osteochondritis dissecans lesions in both humeral heads.
The osteochondritis dissecans lesions were debrided and the exposed subchondral defects were prepared to receive synthetic grafts. Circular implants consisting of a surface layer of polycarbonate urethane and a deep layer of lattice-type titanium were implanted into the osteochondral defects to reconstruct the articular surface topography. Follow-up clinical examination 1.5, 3 and 9months postoperatively revealed a lack of signs of shoulder pain and resolution of thoracic limb lameness. Nine-month follow-up radiographs showed radiographic evidence of osteointegration of both implants.
Synthetic osteochondral implantation in the caudocentral aspect of the humeral head appeared technically feasible and effective in resolving lameness caused by humeral head osteochondritis dissecans.
一只8个月大的美国斗牛犬因双侧前肢跛行前来评估。计算机断层扫描成像显示双侧肱骨头有大而深的剥脱性骨软骨炎病变。
对剥脱性骨软骨炎病变进行清创，并准备好暴露的软骨下缺损以接受合成移植物。将由聚碳酸酯聚氨酯表层和晶格型钛深层组成的圆形植入物植入骨软骨缺损处，以重建关节表面形态。术后1.5个月、3个月和9个月的随访临床检查显示无肩部疼痛迹象，前肢跛行症状消失。9个月随访的X线片显示两个植入物均有骨整合的影像学证据。
在肱骨头尾中央部位植入合成骨软骨在技术上似乎可行，且能有效解决由肱骨头剥脱性骨软骨炎引起的跛行问题。
