TY - JOUR AU - Lloyd-Roberts, GC AU - Catterall, A AU - Salamon, PB DO - doi:10.1302/0301-620X.58B1.1270493 UR - https://doi.org/10.1302/0301-620X.58B1.1270493 TI - A controlled study of the indications for and the results of femoral osteotomy in Perthes' disease T2 - The Journal of Bone & Joint Surgery British Volume VL - 58-B IS - 1 PY - 1976 SP - 31 EP - 36 ER -