Radiographs of proband at the age of 12 years. Anteroposterior view of knee joint showed shortening, fragmentation, and joint surface irregularity of distal femoral and proximal tibial epiphysis (A, B). Anteroposterior view of distal tibial epiphysis showed a lateral wedging and fragmentation (C, D). The tarsal navicular and cuneiform bone showed irregular ossification (E). The epiphysis of distal radius was wedge shaped and the epiphyses of the distal ulnae were relatively small and the carpal bone shows dysplasia and flattening (F). The epiphyses of proximal femur were spared (G).