Livingstone B, Hirst P
Clin Orthop Relat Res. 1986 Jun(207):74-6.
Thirty-nine school-age children with Down's syndrome (trisomy 21) were examined for orthopedic problems and evidence of joint laxity. Of these, 10.3% had required orthopedic surgery for feet and hip problems, and 13% had disorders not yet requiring surgery. Only two children could be regarded as showing unequivocally abnormal generalized joint laxity. Twenty-three of the children had one or more lax joints, and one had a dislocated hip without laxity of other joints. Six children had hypermobility of the patella, but this did not correlate with joint laxity. Fifteen children had no evidence of joint laxity. Laxity does not appear to be a major etiological factor in joint problems occurring in Down's syndrome.
对39名患有唐氏综合征（21三体综合征）的学龄儿童进行了骨科问题及关节松弛迹象检查。其中，10.3%的儿童因足部和髋部问题接受了骨科手术，13%的儿童患有尚未需要手术的疾病。只有两名儿童可被视为明确表现出异常的全身性关节松弛。23名儿童有一个或多个关节松弛，一名儿童髋关节脱位但其他关节无松弛。6名儿童有髌骨活动过度，但这与关节松弛无关。15名儿童没有关节松弛迹象。关节松弛似乎不是唐氏综合征患者关节问题的主要病因。
