What is the goal of using a medial heel wedge in orthotic design?

The use of a medial heel wedge in orthotic design primarily aims to correct over-pronation. Over-pronation refers to the excessive inward rolling of the foot during walking or running, which can lead to various issues such as pain in the knees, hips, or back as well as increased strain on the medial structures of the foot. By incorporating a medial heel wedge, the orthotic can promote more proper alignment of the subtalar joint, leading to a reduction in the tendency to over-pronate.

When a medial heel wedge is placed under the heel, it effectively shifts the load to the lateral side of the foot, thereby encouraging the foot to align properly during the stance phase of gait. This adjustment can lead to improved biomechanical function and, in turn, alleviate pain or discomfort associated with conditions exacerbated by over-pronation.

While reducing heel pain, improving arch height, and providing foot stabilization can indeed be important goals in orthotic design, the specific functionality of a medial heel wedge is primarily linked to addressing over-pronation issues.