“Back pain” is a generalized term that covers a wide range of conditions. Back pain can be caused by a lifting injury, poor posture, an accident, or another cause. (1) - download at 4shared. “Back pain” is a generalized term that covers a wide range of conditions. Back pain can be caused by a lifting injury, poor posture, an accident, or another cause. (1) is hosted at free file sharing service 4shared.