Heel spur is a calcium deposit that forms a bony protrusion on the bottom of the heel bone. This forms as a result of excess strain on the layers of tendons that connect to the heel bone. The body reacts to the strain by depositing calcium to heal the small tendons.
Various things may cause heel spur including wearing the wrong footwear, walking on hard surfaces for a prolonged period of time and excess weight to name but a few.
A common symptom of heel spur is pain in the heel which may be managed with medication and physiotherapy. Surgical treatments might be considered if the aforementioned therapies have failed to resolve the problem.