Duchenne型肌营养不良症(Duchenne muscular dystrophy,DMD)是较常见的X性连锁隐性遗传病。在临床观察30例中,有家族史12例,现将有特点的2家系报告如下。 患儿1 男 6岁 因走路不稳易摔倒4年,起床费力2年就诊。患儿足月顺产,1岁会走,步态不稳,2岁时走路似鸭步态,常摔跤,4岁时发现双小腿变粗,但起床费力,必先俯卧,然后用双手撑地、扶双足、膝、大腿才 Duchenne muscular dystrophy (DMD) is a more common X-linked recessive disease. In the clinical observation of 30 cases, there are 12 cases of family history, now there are 2 families reported as follows. Children 1 years old and 6 years old due to walking unstable easily fall 4 years, get up and laborious 2 years treatment. Full-term children with abortion, 1-year-old will go, unsteady gait, 2-year-old walked like a duck gait, often wrestling, 4-year-old found that the lower leg thick, but get up and laborious, prone first, and then with both hands Escort feet, knees, thighs before