Over-pronation is very common and affects millions of people. To better understand this condition, we'll take a closer look at the 3 most common foot types. An estimated 70% of the population has
fallen arches (or a low arch). Only 20% has a normal arch. And 10% have abnormal feet, in other words they either have flat feet or the opposite a high arched foot.
There is a relationship between biomechanics and injury that is specific to each body part. Overall though, poor mechanics will either increase the landing forces acting on the body or increase the
work to be done by the muscles. Both increase the stress, which, depending on the individual and the amount of running can become excessive and cause injury.
Due to the laxity of the soft tissue structures of the foot, and the fact that the joints are not held together properly, the bones of the feet shift. When this occurs, the muscles that attach to
these bones must also shift, or twist, in order to attach to these bones. The strongest and most important muscles that attach to our foot bones come from our lower leg. So, as these muscles course
down the leg and across the ankle, they must twist to maintain their proper attachments in the foot. This twisting of these muscles will cause shin splints, Achilles Tendonitis, generalized
tendonitis, fatigue, muscle aches and pains, cramps, ankle sprains, and loss of muscular efficiency (reducing walking and running speed and endurance). The problems we see in the feet, which are due
to over-pronation include bunions, heel spurs, plantar fasciitis, fallen and painful arches, hammertoes, metatarsalgia (ball of foot pain), and calluses.
Look at the wear on your shoes and especially running trainers; if you overpronate it's likely the inside of your shoe will be worn down (or seem crushed if they're soft shoes) from the extra
Non Surgical Treatment
Solutions typically presented will include physical therapy sessions, prolonged prescription drug regimens, occasionally non-traditional approaches like holistic medicine and acupuncture. These
options can provide symptom relief in the short term for some patients. However, these treatment methods cannot correct the internal osseous misalignment. Ligaments are not effective in limiting the
motion of the ankle bone when excessive joint motion is present. Furthermore, there is not a single, specific ligament that is "too tight" that needs to be "stretched out." The muscles supporting the
bones are already being "over-worked" and they cannot be strengthened enough to realign these bones. There is no evidence to suggest that any of these measures are effective in re-establishing or
maintaining the normal joint alignment and function.
Subtalar Arthroereisis. The ankle and hindfoot bones/midfoot bones around the joint are fused, locking the bones in place and preventing all joint motion. This may also be done in combination with
fusion at other joints. This is a very aggressive option usually reserved for extreme cases where no joint flexibility is present and/or the patient has severe arthritic changes in the joint.