Described herein are systems and devices for providing a sole for an orthopedic walking brace, the sole having a curved distal surface (620). The distal surface of the sole has a posterior region (630), a mid region (632), and an anterior region (634). The posterior region is configured to lie under a heel portion of the patient's foot, and the mid region is configured to lie under a center portion of the patient's foot. The anterior region is configured to lie under an anterior metatarsal and toe portion of the patient's foot, and has an Anterior-Posterior curvature (644) that increases from a posterior side of the anterior region toward a middle portion of the anterior region and decreases from the middle portion toward an anterior side of the anterior region.