In one example, a rehabilitation device includes a fixed length leg support having first and second spaced-apart, generally parallel elongate members having first and second ends, and a handle is rotatably coupled to the first ends of the elongate members. The rehabilitation device also includes an angularly-adjustable coupler by way of which the handle is rotatably coupled to the elongate members. The angularly-adjustable coupler is operable to implement variations to an angle cooperatively defined by the handle and the fixed length leg support, and the angularly-adjustable coupler includes a locking mechanism operable to releasably lock the handle at various different angular positions relative to the fixed length leg support.