A case of pathological hip dislocation in a child, aged 2 years 6 months, who had surgical treatment, is reported. The boy has history of osteomyelitis of right ilium at age of 10 month, which ended up with the right hip dislocation. Postoperatively cephalocotyloid relation of the right hip was very well reestablished during five years of postoperative observation. Through this case, it is reconfirmed that a child hip has a natural remodelling power even in case of hip joint destruction.