TY - RPRT TI - Why knees fail: lessons learned. AU - John J Callaghan AU - Michael R O'rourke AU - Khaled J Saleh PY - 2004 DO - 10.1016/j.arth.2004.02.015 UR - https://pubmed.ncbi.nlm.nih.gov/15190546/ ID - 15190546 ER -