TY - JOUR AU - Outerbridge, R. E. DO - doi:10.1302/0301-620X.43B4.752 UR - https://doi.org/10.1302/0301-620X.43B4.752 TI - THE ETIOLOGY OF CHONDROMALACIA PATELLAE T2 - The Journal of Bone & Joint Surgery British Volume VL - 43-B IS - 4 PY - 1961 SP - 752 EP - 757 ER -