LUMBAR FACET JOINT SUBCHONDRAL BONE DENSITY IS HIGHER IN LOW-BACK PAIN PATIENTS: O08.Pan C C; Simon, P; Orías, AA Espinoza; Takatori, R; An, H S; Andersson, G BJ; Inoue, NSpine Journal Meeting Abstracts: 2013 - Volume - Issue - ppg 5-6 Free