Larsson L G, Baum J, Mudholkar G S
Department of Medicine, Monroe Community Hospital, Rochester, NY 14603.
Arthritis Rheum. 1987 Dec;30(12):1426-30. doi: 10.1002/art.1780301216.
Six hundred sixty individuals from a music school were studied to determine the frequency of incidence and the nature of their hypermobility. They were interviewed and examined for the 5 recognized features of hypermobility (laxity of the thumbs, fingers, elbows, spine, and knees). The incidence of hypermobility, according to the number of joints involved, followed an empiric geometric law. Approximately 27% of the individuals had 1 lax joint, whereas only 3% possessed all 5 features. Specific features were present at different frequencies in the 2 sexes. The ratio of the occurrence of 2 features in women compared with the occurrence in men was 2:1. Ratios for the occurrence of 3, 4, and 5 features were 4:1, 8:1, and 3:1, respectively. Thus, hypermobility was a predominantly female characteristic. Joint laxity declined with age, although not to a statistically significant degree. In men, the decline started when they were in their mid-twenties; however, in women, joint laxity continued through the mid-forties.
对一所音乐学校的660名个体进行了研究，以确定关节过度活动的发生率及其性质。对他们进行了访谈，并检查了关节过度活动的5个公认特征（拇指、手指、肘部、脊柱和膝盖的松弛）。根据受累关节的数量，关节过度活动的发生率遵循经验几何定律。约27%的个体有1个关节松弛，而只有3%的个体具备所有5个特征。特定特征在两性中的出现频率不同。女性出现2个特征的发生率与男性的发生率之比为2:1。出现3个、4个和5个特征的发生率之比分别为4:1、8:1和3:1。因此，关节过度活动主要是女性特征。关节松弛随年龄增长而下降，尽管下降程度在统计学上不显著。在男性中，这种下降在他们二十多岁中期开始；然而，在女性中，关节松弛一直持续到四十多岁中期。
