TY - JOUR AU - Ippolito, E AU - Tudisco, C AU - Farsetti, P DO - doi:10.1302/0301-620X.69B2.3818755 UR - https://doi.org/10.1302/0301-620X.69B2.3818755 TI - The long-term prognosis of unilateral Perthes' disease T2 - The Journal of Bone & Joint Surgery British Volume VL - 69-B IS - 2 PY - 1987 SP - 243 EP - 250 ER -