Movements at the low back during normal walking

We present a technique for measuring the kinematics of the functional low back during normal gait. We have used a similar technique previously to measure low back movement simultaneously with hip, knee, and ankle movement during the toe-touching manoeuvre. We noted that movements at the low back were biphasic. The greatest low back movements were found to occur in the transverse plane (mean = 23°), whereas a mean of 17° movement occurred in the coronal plane and only 5° movement in the sagittal plane. These findings confirm, using a non-invasive technique, that there are significant ranges of movement at the low back during walking and lend some support to the theory that rotational movement at the low back is a major component of human locomotion.