TY - JOUR AU - Ackroyd, CE AU - Dinley, RJ DO - doi:10.1302/0301-620X.58B4.1018040 UR - https://doi.org/10.1302/0301-620X.58B4.1018040 TI - The locked patella. An unusual complication of haemophilia T2 - The Journal of Bone & Joint Surgery British Volume VL - 58-B IS - 4 PY - 1976 SP - 511 EP - 512 ER -