The object of the invention is a method of improving a medical bed (10) equipped with an articulated frame (12) with adjustable height, the articulated frame comprising a frame (14) connected to the sleeping surface (16). ) of the bed and supporting two articulated legs (18,20), each articulated leg (18,20) being animated between a high position and a low position, the feet (22,24) of each articulated leg (18,20) resting on the ground (S) in all the positions from the high position to the low position of each articulated leg (18,20), and each articulated leg (18,20) of the articulated frame (12) pivoting beyond the low position and being driven by an actuator beyond this low position, said method being characterized in that it provides to bring a wheel (62) on either side of each articulated leg (18,20), each wheel (62) being positioned on the articulated leg (18,20) such that: - the fulcrum (64) on the the ground of each wheel (62) is closer to the frame (14) than the fulcrum (66) of the legs (22,24) of the articulated leg in all positions from the high position to the low position of the articulated leg, - and that the fulcrum (64) on the floor of each wheel (62) is further from the frame (14) than the fulcrum (66) of the feet (22,24) of the articulated leg when the articulated leg (18,20) is driven by the actuator beyond its low position.L'objet de l'invention est un procédé d'amélioration d'un lit médicalisé (10) équipé d'un châssis articulé (12) à hauteur réglable, le châssis articulé comprenant un bâti (14) relié au plan de couchage (16) du lit et supportant deux jambes articulées (18,20), chaque jambe articulée (18,20) étant animée entre une position haute et une position basse, les pieds (22,24) de chaque jambe articulée (18,20) reposant sur le sol (S) dans toutes les positions allant de la position haute à la position basse de chaque jambe articulée (18,20), et chaque jambe articulée (18,20) du châssis articulé (12) pivotant au-delà de la position basse et
