A patient support apparatus (20) comprising a frame (26),at least one drop rail (66) coupled to the frame for tilting movement between a first position generally parallel to the frame (26) and a lowered second position,a seat section (44) supported by the at least one drop rail (66) to tilt therewith,a thigh section (46) coupled to the seat section (44) for tilting movement between a first position generally parallel to the at least one drop rail (66) and a second position raised with respect to the at least one drop rail,a head section (42) coupled to the frame (26) and coupled to the at least one drop rail (66), tilting movement of the head section from a lowered position generally parallel to the frame to a raised position resulting in downward tilting movement of the at least one drop rail (66) from the first position to the second position, anda linkage (400) coupled to the head section (42) and coupled to the thigh section (46) to initially raise and then lower the thigh section (46) as the head section (42) is raised.