An examination of joint laxity in haemophilia.
An adolescent haemophiliac group (all less than 1 per cent Factor VIII) and a normal, similarly aged, 'control group' of boys were examined to measure joint laxity in an effort to identify a causative factor for bleeding. Definitive laxity was found in the thumb joints and in finger extension of haemophiliacs compared with normal boys. The haemophiliacs who were more lax-jointed showed no tendency towards an increased number of bleeds when they were followed for 100 days. Possible explanations for these phenomena are discussed.
D000293:Adolescent; D000328:Adult; D000843:Ankle Joint / Q000503:physiopathology; D002648:Child; D005384:Finger Joint / Q000503:physiopathology; D006467:Hemophilia A / Q000503:physiopathology*; D006470:Hemorrhage / Q000503:physiopathology; D006801:Humans; D007596:Joints / Q000503:physiopathology*; D008297:Male; D009068:Movement; D013933:Thumb / Q000503:physiopathology