Midlumbar lateral flexion stability measured in healthy volunteers by in vivo fluoroscopy. - Mellor FE; Muggleton JM; Bagust J; Mason W; Thomas PW; Breen AC; Mellor, Fiona E; Muggleton, Jennifer M; Bagust, Jeff; Mason, William; Thomas, Peter W; Breen, Alan C (Spine (03622436), 2009)