Abstract
The present study was done to observe the articular cartilage of femoral head and is based on eleven hip-arthrograms in ten children who were diagnosed as having Perthes disease.
We devided our arthrograms into three types by observing the epiphyseal center and the articular cartilage of femoral head, and analysed them by calculating the ratio of the height of femoral head to the transverse diametor, as an expression of sphericity.
