我科自1980年9月～1997年7月用死婴镇骨移植治疗耳硬化症135例160耳，男89例（10耳），女46例（54耳）。年龄13～69岁。病程，＜5年44例（53耳），6～10年sl例（59耳），11～40年40例（48耳）。常规授骨足板切除术，用骨膜一小叶覆盖前窗（先取切口处骨膜一小片备用），将经过 From September 1980 to July 1997, our department treated 135 cases of otosclerosis with 160 ears, 89 males (10 ears) and 46 females (54 ears) with the birth-bearing bone graft. Age 13 ~ 69 years old. The course of disease was 44 (53 ears) in <5 years, 61 cases (59 ears) in 6-10 years and 40 cases (48 ears) in 11-40 years. Conventional osteophyte excision, with a small periosteal cover the front window (take a small piece of periosteum incision at the back), will be through