The clistressed cow frequently attempts urination and pulsates the urethra over the ischial arch .

病牛频频企图排尿，坐骨弓上的尿道发生搏动。

Repairing refractory bedsores on ischial tuberosisties with the long head of biceps femoris tendon muscle flap and inferior semi gluteus maximus musculocutaneous flap .

股二头肌长头肌瓣联合臀大肌下部肌皮瓣修复难治性坐骨结节褥疮。