Objective To observe change of the long-term development of acetabulum following improved colonna's procedure.
Objective To observe change of the long-term development of acetabulum following improved colonna's procedure.
目的观察改良Colonna手术后髋臼发育的远期变化。
Objective To observe change of the long-term development of acetabulum following improved colonna's procedure.
目的观察改良Colonna手术后髋臼发育的远期变化。