両膝蓋骨脱臼の親子例の経験

Abstract

A family in which the son had bilateral habitual patellar dislocation and his father had bilateral permanent dislocation of the patellae was reported. Eleven families in which dislocation of the patellae occurred have been reported in Japan since 1984.However, the combination of habitual and permanent patellar dislocation in the same family has never been reported in Japan. Permanent dislocation of the patella is usually congenital, and evidence of transition of habitual dislocation to permanent dislocation of the patella has not been reported. Although the father's history was uncertain, his permanent dislocation and the habitual dislocation of the son may suggest possible transition of habitual to permanent patellar dislocation.