Quantitative gait analysis is the systematic measurement, description, and assessment of those quantities thought to characterize human locomotion. Optoelectronic motion capture system is a tool to conduct three-dimensional gait analysis and it helps us to acquire kinematic data, i.e., the angles and the kinetic data, i.e., forces along with spatiotemporal data which describe the fundamental gait characteristics. These are ultimately interpreted by the clinician(s) to form an assessment1 which helps in identifying the pathology and developing rehabilitation strategies to restore normalcy of gait. Keeping in view the above evidence and the paucity of Indian normative gait data, our study was designed to create a gender-specific, region-specific, normative spatiotemporal, kinematic, and kinetic dataset. We present a technical note on our method of three-dimensional gait analysis. The gait lab at PGIMER is equipped with BTS SmartTM (BTS Bioengineering, Milan, Italy) Optoelectric system which was used to record and measure spatiotemporal, kinematic, and kinetic data. The gait lab has a walkway embedded with 16 force platforms with sufficient space for acceleration and deceleration coupled with 6 infrared cameras and two real-time cameras, enabling the recordings of left and right feet to be made simultaneously with each trial recording at least three complete gait cycles at a self-selected pace. The data were captured, processed, and analyzed with strict adherence to a standardized protocol. The data were recorded for transverse, sagittal, and axial planes.
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