A walker for aiding locomotion comprises a frame structure including: a first and second side frame comprising (i) a first and second anterior frame portion, (ii) a first and second posterior frame portion, and (iii) a first superior frame portion connecting an upper end of the first anterior frame portion with an upper end of the first posterior frame portion, and (iv) a second superior frame portion connecting an upper end of the second anterior frame portion with an upper end of the second posterior frame portion. The first posterior frame portion of the first side frame comprises a first upper posterior collar and the second posterior frame portion of the second side frame comprises a second upper posterior collar. A first and second rotatable hand-rail are connected pivotally to the first and second upper posterior collar of the first and second posterior frame portion.
