In recognition of his scientific contributions to an understanding of cartilage degeneration, epiphyseal necrosis, torsional deformation of bone and dysplasia of joints in relation to numerous musculoskeletal disorders, especially congenital dislocation of the hip. On the basis of his research he has designed safer treatment for young children and an original operation - innominate osteotomy - for older children both of which represent major advances in the prevention of degenerative arthritis of the hip in adult life.
