Badly fitting footwear could make inadequate biomechanics even worse, and correctly fitting footwear may help to minimize the influence of lousy biomechanics. Bone bruise (contusion): Stepping on a tough, sharp object can bruise the fat padding beneath your heel. You might not see discoloration, but your heel will feel tender https://www.theorthopaedicandpainpractice.com/exploring-the-causes-and-treatments-of-common-foot-pain/