Szentimrey D, Fowler D, Johnston G, Wilkinson A
Department of Veterinary Anesthesiology, Radiology and Surgery, Western College of Veterinary Medicine, Saskatoon, Saskatchewan, Canada.
Vet Surg. 1995 May-Jun;24(3):215-25. doi: 10.1111/j.1532-950x.1995.tb01321.x.
An autogenous free vascular bone graft of the canine distal ulna was evaluated. The vascularity of the graft was based on a musculoperiosteal sheath supplied solely by the caudal interosseous artery and vein. Four autogenous heterotopic (ulna to tibia) vascular transfers were performed. Two avascular transfers were performed to provide baseline criteria from which the success of vascularized transfers could be assessed. Clinical lameness evaluation, serial radiographs, bone scintigraphy, and sequential fluorochrome bone labeling were performed after surgery in both vascular and avascular transfers. All dogs were free of lameness in the donor limb by the 26th postoperative day. Serial radiographs revealed rapid graft incorporation and hypertrophy in all vascularized grafts and severe bone resorption in nonvascularized grafts. Histology, microangiography, and evaluation of fluorochrome bone labels were performed 90 days after surgery to determine graft viability, incorporation and temporal remodeling patterns. Microangiography and fluorochrome assessment complemented the histological findings. Based on these findings the distal ulnar bone graft was determined to be both viable and structurally adequate for selected cases of long bone reconstruction.
对犬尺骨远端的自体游离带血管骨移植进行了评估。移植骨的血供基于仅由骨间后动静脉供应的肌骨膜鞘。进行了4例自体异位（尺骨至胫骨）血管移植。进行了2例非血管移植以提供基线标准，据此可评估血管化移植的成功率。对血管移植和非血管移植术后的犬进行了临床跛行评估、系列X光片、骨闪烁显像和连续荧光标记骨检查。所有犬在术后第26天时供体肢体均无跛行。系列X光片显示，所有血管化移植骨均迅速融合并肥大，而非血管化移植骨则出现严重骨吸收。术后90天进行组织学、微血管造影和荧光标记骨评估，以确定移植骨的活力、融合情况和时间重塑模式。微血管造影和荧光评估补充了组织学检查结果。基于这些发现，确定尺骨远端骨移植对于选定的长骨重建病例既具有活力，结构上也足够。
