TY - JOUR AU - Dandy, D. J. DO - doi:10.1302/0301-620X.78B2.0780328 UR - https://doi.org/10.1302/0301-620X.78B2.0780328 TI - CHRONIC PATELLOFEMORAL INSTABILITY T2 - The Journal of Bone & Joint Surgery British Volume VL - 78-B IS - 2 PY - 1996 SP - 328 EP - 335 ER -