TY - JOUR AU - Apley, AG DO - doi:10.1302/0301-620X.62B4.7430238 UR - https://doi.org/10.1302/0301-620X.62B4.7430238 TI - Instability of the knee resulting from ligamentous injury. A plea for plain words T2 - The Journal of Bone & Joint Surgery British Volume VL - 62-B IS - 4 PY - 1980 SP - 515 EP - 516 ER -