TY - JOUR AU - Fernandez de Valderrama, J. A. DO - doi:10.1302/0301-620X.45B3.462 UR - https://doi.org/10.1302/0301-620X.45B3.462 TI - THE "OBSERVATION HIP" SYNDROME AND ITS LATE SEQUELAE T2 - The Journal of Bone & Joint Surgery British Volume VL - 45-B IS - 3 PY - 1963 SP - 462 EP - 470 ER -