During from 24 Oct. 1971 to 31 Aug. 1980, 6461 newborn babies were examined.
Click sign was noted in 119 new borns (1.84%).
All of them were treated with abduction pillow, usually 1-4 weeks. These treatment was good results.
Late diagnosis was 7 cases.
In these examination, we considered that these late diagnosis cases were not over-looked, because familial joint laxitic tendency was very high.
