Observational gait analysis (OGA) is a routine yet critical part of the physical therapy evaluation of an individual with hemiparesis. Information gathered from OGA is important for diagnosis, the determination of treatment techniques and as a measure of treatment efficacy. The physical therapist must assess, with accuracy, the step length, swing and support phases, as well as triplanar motions at the shoulder, trunk, pelvis, hip, knee, ankle, and foot during the gait cycle. Gait analysis and assessment is an extremely challenging task for even the most experienced clinical observer. Video gait analysis (VGA) is a method of gait analysis in which the observer videotapes a patient ambulating; then with the use of a television and video cassette recorder analyzes their gait. VGA provides a means to bridge the gap between the impractical advanced technology of gait performance systems and the reduced reliability of OGA. This method of gait analysis may allow the physical therapist to perform efficient gait analysis in the clinic without sacrificing accuracy. The purpose of this study was to investigate the differences in scores of VGA as compared to standard OGA and computerized gait analysis using the Tinetti Gait Assessment Tool (ordinal scale 0-12).7
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