Article Figures & Data
Figures
- Fig. 1
Pre- and postsurgery posture.
- Fig. 2
Pre (sitting) and post (standing) surgery radiographs.
- Fig. 3
Sagittal plane excursions of the pelvis, hip, knee and ankle pre- (red) and post- (blue) surgical spinal alignment for a patients with severe ankylosing spondylitis in comparison the healthy values (gray).
- Fig. 4
Lower extremity range of motion sagittal plane during the stance phase. Positive flexion / plantar flexion. Pre - One Day before Surgery, Post - One Month after Surgery.
- Fig. 5
Trunk EMG time to peak. Time for muscle to reach its peak activity as a percentage of gait cycle. 0% represents right heel contact. EO - External Oblique, IO - Internal Oblique, ES - Erector Spinae, MF - Multifidus, Pre - One Day before Surgery, Post - One Month after Surgery.
- Fig. 6
Lower Extremity EMG time to peak. Time for muscle to reach its peak activity as %gait cycle. 0% represents right heel contact. RF - Rectus Femoris, ST - Semitendinosus, TA -Tibialis Anterior, MG - Medial Gastrocnemius. Pre - One Day before Surgery, Post - One Month after Surgery.
Tables
Description Walking Speed: Mean velocity of progression Cadence: Number of step for minute Step Length: Longitudinal distance from one foot strike to the next one Trunk Angle
IC:Value of trunk flexion-extension angle (trunk position on the sagittal plane relative to the pelvis) at Initial Contact, representing the position of the trunk at the beginning of gait cycle. Neck Angle IC: Value of neck flexion-extension angle (neck position on the sagittal plane relative to the trunk) at Initial Contact, representing the position of the neck at the beginning of gait cycle. Head Angle IC: Value of head flexion-extension angle (global head position on the sagittal plane) at Initial Contact, representing the position of the head at the beginning of gait cycle. GRF: Maximum of Ground Reaction Force during the stance phase Pre Post Walking Speed: 0.90 ± 0.0 m/s 0.92 ± 0.0 m/s Cadence: 96.27 ± 4.0 stp/m 100.21 ± 5.2 stp/m Right Step Length: 0.54 ± 0.0 m 0.54 ± 0.0 m Left Step Length: 0.58 ± 0.0 m 0.57 ± 0.0 m Trunk Angle IC: 77.10 ± 1.4° 14.15 ± 1.2° Neck Angle IC: -35.95 ± 1.4° -16.67 ± 1.1° Head Angle IC: -39.83 ± 2.8° 2.73 ± 2.1° R GRF: 589.92 ± 32.0 N 569.15 ± 18.90 N L GRF: 603.16 ± 54.0 N 574.87 ± 29.0 N Pre - One Day before Surgery, Post - One Month after Surgery, IC – Initial Contact. Positive angle – flexion.
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