[Femoral osteosynthesis associated with 60s bioglass in tamanduá bandeira: case report]

ABSTRACT Roadblocks of wild animals are frequent and often cause bone fractures that if not properly treated lead to the death of the animal due to complications or inability to survive in its natural habitat. The objective of the present study was to report the use of plate rod and bioglass 60S (BG60S) for the treatment of femoral fracture in anteater. The animal was rescued by environmental police on suspicion of being hit. It was sedated for clinical and radiographic evaluation, which revealed a fracture in the right femur. Dexmedetomidine was used as preanesthetic medication, midazolam and ketamine for induction, and isoflurane for maintenance. Epidural blockade with bupivacaine and morphine was also performed. Osteosynthesis was done with a locking plate 2.7 and 2.5 intramedullary pin. 4G of BG60S was placed in the focus of fracture to favor osteogenesis. The patient had immediate functional recovery of the affected limb. The bone repair occurred by second intention, with complete ossification of the callus with clinical consolidation at 30 days, and near complete remodeling at 180 days. It is concluded that the use of plate rod to the BG60S is efficient in the treatment of femur fracture in anteater, allowing the rapid recovery and reintroduction of the animal in the wild.

摘要：野生动物常遭遇道路障碍物，此类碰撞极易导致骨折；若未得到妥善治疗，动物会因骨折并发症或无法在自然栖息地存活而死亡。本研究旨在报告采用接骨板-髓内针与生物玻璃60S（bioglass 60S, BG60S）治疗食蚁兽股骨骨折的临床案例。该动物因疑似遭遇撞击被环境警察救助，研究人员对其实施镇静以开展临床与放射学检查，结果显示其右侧股骨骨折。麻醉方案如下：以右美托咪定为麻醉前给药，咪达唑仑联合氯胺酮进行麻醉诱导，异氟烷维持麻醉；同时辅以布比卡因复合吗啡的硬膜外阻滞。骨折内固定采用2.7型锁定接骨板（locking plate）与2.5型髓内针（intramedullary pin）完成，并向骨折部位植入4克BG60S以促进成骨。受试动物患肢即刻恢复功能。骨折采用二期愈合方式：术后30天可见骨痂完全骨化、临床愈合，术后180天实现接近完全的骨重塑。综上，接骨板-髓内针联合BG60S治疗食蚁兽股骨骨折效果显著，可帮助受试动物快速康复并重新放归野外。