Methods: For 164 cases of WLV, placental tissue fluid and vitamin B12 were injected to bilateral ischial tuberosity.

• 方法:对164例患者在双侧坐骨结节处予胎盘组织液、维生素B12局部注射,并根据病理分型予化斑膏1号、化斑膏2号、化斑膏3号外用治疗。