Swing time asymmetry is a measure of the difference in swing time between legs. Someone with one deficient limb may present with swing time asymmetry if they have neurological or physical impairments that affect their ability to stand on one leg during the swing phase of gait. Asymmetry measures are best used in conjunction with a baseline for each individual, as every person has inherent asymmetries.
Spatiotemporal asymmetries after bicondylar tibial plateau fractures - 12 months after external fixation frame removal, step length, swing time, and single support asymmetries were significantly larger than in healthy populations.
Elsoe, R, Larsen, P. “Asymmetry in gait pattern following bicondylar tibial plateau fractures—A prospective one-year cohort study” Injury 2017; 48(7) 1657-1661 https://doi.org/10.1016/j.injury.2017.04.045