Some research suggests that flat feet in adults can, over time, actually exert abnormal pressure on the ankle joint that can cause damage. One indirect complication of flat arches may be urinary incontinence or leakage during exercise. The less flexible the arch, the more force reaches the pelvic floor, jarring the muscles that affect urinary continence. Nevertheless, whether flat feet pose any significant problems in adults is unknown. For example, a 2002 study on athletes with flat feet indicated that they had no higher risk for leg or foot injuries than athletes with normal arches.
Treatment for Flat Feet in Children. Children with flat feet often outgrow them, particularly tall, slender children with flexible joints. One expert suggests that if an arch forms when the child stands on tip-toes, then the child will probably outgrow the condition. For certain children, minimally invasive surgery to implant temporary corrective screws into the arch may be an option.
Treatment for Flat Feet in Adults. In general, conservative treatment for flat feet acquired in adulthood (posterior tibial tendon dysfunction) involves pain relief and insoles or custom-made orthotics to support the foot and prevent progression.
In severe cases, surgery may be required to correct the foot posture, usually with procedures called osteotomies or arthrodesis, which typically lengthen the Achilles tendon and adjusting tendons in the foot. One procedure uses an implant to support the arch. These procedures have potential complications and conservative methods should be tried first.
Abnormally High Arches
An overly-high arch (hollow foot) can cause problems. Army studies have found that recruits with the highest arches have the most lower-limb injuries and that flat-footed recruits have the least. Contrary to the general impression, the hollow foot is much more common than the flat foot.
Clawfoot, or pes cavus, is a deformity of the foot marked by very high arches and very long toes. Clawfoot is a hereditary condition, but can also occur when muscles in the foot contract or become unbalanced due to nerve or muscle disorders.
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