TY - JOUR AU - CHENG, J. C. Y. DO - doi:10.1302/0301-620X.81B1.0810182a UR - https://doi.org/10.1302/0301-620X.81B1.0810182a TI - Author’s reply T2 - The Journal of Bone & Joint Surgery British Volume VL - 81-B IS - 1 PY - 1999 SP - 182 EP - 182 ER -