TY - JOUR AU - Cram, P; Lu, X; Kates, S L; Singh, J A; Li, Y; Wolf, B R TI - Total knee arthroplasty volume, utilization, and outcomes among Medicare beneficiaries, 1991-2010 JO - JAMA IS - 12 VL - 308 PY - 2012 DO - 10.1001/2012.jama.11153 L3 - PubMed-ID: 23011713 SP - 1227 EP - 1236 ER -