A support and containment structure for persons comprises at least one support member (23) which extends mainly along a longitudinal axis (Y), and at least one containment element (11). The at least one containment element (11) is assembled transversely on the at least one support member (23) and is able to contain the trunk of the person. The at least one support member (23) consists of a plurality of modular elements (19) adjacent to each other, selectively adjustable in height and able to be clamped in a stable position by means of relative clamping means (13, 14, 25, 27). The modular elements (19) assume, in their entirety during use, a position substantially adapted to the trunk of the person in correspondence with his spine.