Izing Simon, Béni Dániel, Molnár Szabina, Bakos Zoltán, Bodó Gábor
Department and Clinic of Equine Medicine, University of Veterinary Medicine, H-2225 Üllő, Dóra major, Hungary.
Acta Vet Hung. 2021 Jan 15;68(4):399-404. doi: 10.1556/004.2020.00054.
The objectives of this in vivo experimental study were to evaluate the feasibility of cortical screw insertion into the intact distal phalanx in standing sedated horses and to document potential postoperative complications. One cortical screw was randomly inserted in lag fashion into each distal phalanx in 9 horses. The second surgery on the contralateral limbs was performed 2-3 weeks after the first operation, when a 4.5-mm cortical screw was inserted in lag fashion into the distal phalanx of sedated horses following perineural analgesia. Following surgery, the drill hole was filled with an antibiotic-soaked swab, which was changed every 48 h. The horses were euthanised 8 weeks after the second surgery. The hooves were disarticulated and evaluated macroscopically and by computed tomography. The surgery time was 13.9 ± 4.8 min (mean ± SD). Pain scores and lameness gradually decreased after 7 days. Solar canal penetration (SCP) was detected in 10 out of the 18 distal phalanges (55.5%). In 7 out of the 10 penetrations intraoperative bleeding was obvious. No postoperative infection was observed. Screw insertion into the distal phalanx was easily and quickly accomplished in standing horses, but its advantages in horses with sagittal fractures should be investigated further. SCP had no impact on postoperative lameness.
本体内实验研究的目的是评估在站立镇静的马匹中将皮质骨螺钉插入完整远节指骨的可行性，并记录潜在的术后并发症。在9匹马的每根远节指骨中随机以拉力螺钉方式插入一枚皮质骨螺钉。在第一次手术后2至3周对侧肢体进行第二次手术，即在神经周围镇痛后，以拉力螺钉方式将一枚4.5毫米皮质骨螺钉插入镇静马匹的远节指骨。手术后，用浸有抗生素的拭子填充钻孔，每48小时更换一次。在第二次手术后8周对马匹实施安乐死。将蹄关节离断，进行宏观评估和计算机断层扫描。手术时间为13.9±4.8分钟（平均值±标准差）。7天后疼痛评分和跛行逐渐减轻。18根远节指骨中有10根（55.5%）检测到髓腔穿透（SCP）。在10次穿透中有7次术中出血明显。未观察到术后感染。在站立的马匹中，将螺钉插入远节指骨很容易且迅速完成，但在矢状骨折马匹中的优势应进一步研究。SCP对术后跛行无影响。
