Gait variability measurements in lumbar spinal stenosis patients: part B. Preoperative versus postoperative gait variability.
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.
TEI of Crete, Biomechanics Laboratory, Estavromenos, PO Box 1939, Crete, Greece. npapnet@gmail.com
N C
NC
Papadakis
D G
DG
Christakis
G N
GN
Tzagarakis
G I
GI
Chlouverakis
N A
NA
Kampanis
K N
KN
Stergiopoulos
P G
PG
Katonis
D000328:Adult; D000368:Aged; D005260:Female; D005684:Gait / Q000502:physiology*; D020233:Gait Disorders, Neurologic / Q000150:complications / Q000175:diagnosis / Q000503:physiopathology*; D006801:Humans; D008159:Lumbar Vertebrae; D008297:Male; D008875:Middle Aged; D009213:Myography / Q000379:methods / Q000592:standards; D011184:Postoperative Period; D057234:Preoperative Period; D020127:Recovery of Function / Q000502:physiology; D013130:Spinal Stenosis / Q000150:complications / Q000175:diagnosis / Q000503:physiopathology*