We claim the ornamental design for a therapeutic lower garment, as shown and described.
FIG. 1 is a front perspective view of a therapeutic lower garment;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a view of the inside of the garment, i.e., the back of panel shown in FIG. 2;
FIG. 4 is a left-side elevational view thereof, the right-side elevational view being a mirror image thereof;
FIG. 5 is a top plan view thereof; and,
FIG. 6 is a bottom plan view thereof.
The broken lines showing the trousers depict environment only and form no part of the claimed design, while the remaining broken lines depict boundary lines and form part of the claimed design.