Cox V S, Breazile J E, Hoover T R
Am J Vet Res. 1975 Apr;36(4 Pt.1):427-30.
Dissections of the bovine pelvic inlet region were made to determine which nerves were vulnerable to fetal-induced traumatic damage. Surgical sections of the obturator nerves and the lumbar roots of the sciatic (ischiatic) nerves were done to determine a possible cause of calving paralysis. Only 1 of 11 cattle in which bilateral obturator nerve section was done was unable to stand after the operation, and in this individual, secondary stifle injuries were found on necropsy. Subsequent surgical operations were performed on some of these cattle in order to section the lumbar root of the sciatic nerve. Of 6 cattle prepared, 2 were unable to rise after surgery and another 2 became "downer" cattle after 30 to 45 minutes of forces exercise. Also, some of these cattle were very ataxic and had intermittent fetlock flexion.
对牛骨盆入口区域进行解剖，以确定哪些神经易受胎儿引起的创伤性损伤。切断闭孔神经和坐骨神经的腰神经根，以确定产犊麻痹的可能原因。在11头接受双侧闭孔神经切断术的牛中，只有1头术后无法站立，尸检时发现该个体继发了膝关节损伤。随后对其中一些牛进行了后续手术，以切断坐骨神经的腰神经根。在准备的6头牛中，2头术后无法站起，另外2头在进行30至45分钟的强制运动后变成了“卧地不起”的牛。此外，其中一些牛共济失调非常严重，且有间歇性跗关节屈曲。
