The ornamental design for an orthopedicwalker, as shown and described.
FIG. 1 shows a front elevation view of an orthopedic walker having a bladder inflation bulb on the back side, not visible from the front.
FIG. 2 shows a front left-side perspective view of FIG. 1.
FIG. 3 shows a top plan view of FIG. 1.
FIG. 4 shows a back elevation view of FIG. 1.
FIG. 5 shows a left-side elevation view of FIG. 1; and,
FIG. 6 shows a right-side elevation view of FIG. 1.
The broken lines in the figures are for the purpose of illustrating portions of an orthopedic walker that form no part of the claim. The broken lines showing straps and a foot bed in FIG. 2 are for the purpose of illustrating environmental subject matter that forms no part of the claim.