Related Experiment Video
Updated: Jun 19, 2026
Evaluation of Patients' Posture and Gait Profile After Lumbar Fusion Surgery by Video Rasterstereography and Treadmill Gait Analysis
Published on: March 23, 2019
Gait variability measurements in lumbar spinal stenosis patients: part B. Preoperative versus postoperative gait
N C Papadakis1, D G Christakis, G N Tzagarakis
1TEI of Crete, Biomechanics Laboratory, Estavromenos, PO Box 1939, Crete, Greece. npapnet@gmail.com
Abstract:
The objective of this study was to assess the gait variability of lumbar spinal stenosis (LSS) patients and to evaluate its postoperative progression. The hypothesis was that LSS patients' preoperative gait variability in the frequency domain was higher than the corresponding postoperative. A tri-axial accelerometer sensor was used for the gait measurement and a spectral differential entropy algorithm was used to measure the gait variability. Twelve subjects with LSS were measured before and after surgery. Preoperative measurements were performed 2 days before surgery. Postoperative measurements were performed 6 and 12 months after surgery. Preoperative gait variability was higher than the corresponding postoperative. Also, in most cases, gait variability appeared to decrease throughout the year.
