TY - JOUR AU - Stanley, JK AU - Owen, R AU - Koff, S DO - doi:10.1302/0301-620X.61B4.500747 UR - https://doi.org/10.1302/0301-620X.61B4.500747 TI - Congenital sacral anomalies T2 - The Journal of Bone & Joint Surgery British Volume VL - 61-B IS - 4 PY - 1979 SP - 401 EP - 409 ER -