Abstract
BACKGROUND CONTEXT
Adult spinal deformity (ASD) patients often complain of walking discomfort. However,
dynamic balance evaluation methods of gait in ASD have not been well established.
DESIGN
Case series study.
PURPOSE
Characterize the gait of ASD patients using a novel two-point trunk motion measuring
device.
PATIENT SAMPLE
Sixteen ASD patients scheduled for surgery and 16 healthy control subjects.
OUTCOME MEASURES
Trunk swing width and track length of the upper back and sacrum.
METHODS
Gait analysis was performed using a two-point trunk motion measuring device on 16
ASD patients and 16 healthy control subjects. Three measurements were taken for each
subject, and the coefficient of variation was determined to compare measurement accuracy
between the ASD and control groups. Trunk swing width and track length were measured
in three dimensions for comparisons between the groups. The relationship among output
indices, sagittal spinal alignment parameters, and quality of life (QOL) questionnaire
scores was examined as well.
RESULTS
No significant difference was found for the precision of the device between the ASD
and control groups. Compared with controls, the walking style of ASD patients tended
to have larger right-left swing of the trunk (+14.0 cm and +23.3 cm at the sacrum
and upper back, respectively), larger horizontal plane movement of the upper body
(+36.4 cm), less vertical movement (-5.9 cm and -8.2 cm up-down swing at the sacrum
and upper back, respectively), and longer gait cycle (+0.13 sec). Regarding QOL in
ASD patients, greater right-left/front-back swing of the trunk, greater movement in
the horizontal plane, and longer gait cycle were associated with lower QOL scores.
Conversely, greater vertical movement was associated with higher QOL.
CONCLUSIONS
ASD patients had unique gait characteristics, the intensity of which were associated
with diminished QOL. The two-point trunk motion measuring device may be reliable and
useful for the clinical assessment of balance during gait in ASD patients.
Keywords
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Article info
Publication history
Published online: April 11, 2023
Accepted:
April 7,
2023
Received in revised form:
March 18,
2023
Received:
January 11,
2023
Publication stage
In Press Journal Pre-ProofFootnotes
FDA device/drug status: Not applicable.
Author disclosures: SI: Grant: JSPS KAKENHI (D). HN: Grant: JSPS KAKENHI (D). HO: Grant: JSPS KAKENHI (D). MU: Grant: JSPS KAKENHI (D). TK: Grant: JSPS KAKENHI (D). TH: Grant: JSPS KAKENHI (D). YM: Grant: JSPS KAKENHI (D). TF: Grant: JSPS KAKENHI (D). KH: Grant: JSPS KAKENHI (D). SK: Grant: JSPS KAKENHI (D). RM: Grant: JSPS KAKENHI (D). HH: Grant: JSPS KAKENHI (D). YI: Grant: JSPS KAKENHI (D). KN: Grant: JSPS KAKENHI (D). MK: Grant: JSPS KAKENHI (D). JT: Grant: JSPS KAKENHI (D).
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