Running is a common sport, recreational activity and way to achieve health and fitness goals. Big money is involved at the elite end of the sport, and at the other end of the spectrum, there is a boom in the numbers of people taking up running and doing things like running marathons. Running has so many health benefits and is easy to do, not requiring expensive equipment or gym memberships. The only cost involved is a good pair of running shoes. Despite that ease, running is not without its problems. During any one year period anywhere from a third to a half of runners get an injury that might stop them from running. At the elite end of the spectrum this interferes with training; at the other end, it can affect motivation to continue running.
Most running injuries are what are called an overuse injury and comes from the repetitive stress on the body from the activity, rather than the acute type injury that can occurs in other sports. The main cause of running injury is there is too much load applied to the tissues than what the tissues can take. Too much load could just be a matter of doing too much running too quickly for the tissues to get used to that load. This is why any increases in activity have to be done slowly and surely to give the body a chance to get used to it. The other reason for too much load is a biomechanical problem. This may be due to an inherent muscle weakness, a tight muscle, or a bony deviation, or from a poor running technique, or from not having the right running shoe to match the individual foot and type of running done. Most treatment options for running injuries are aimed at reducing the stress or load by addressing all of those factors.