TY - JOUR AU - Lane, LB AU - Bullough, PG DO - doi:10.1302/0301-620X.62B3.7410471 UR - https://doi.org/10.1302/0301-620X.62B3.7410471 TI - Age-related changes in the thickness of the calcified zone and the number of tidemarks in adult human articular cartilage T2 - The Journal of Bone & Joint Surgery British Volume VL - 62-B IS - 3 PY - 1980 SP - 372 EP - 375 ER -