FLEXIBLE FLATFOOT

What Is Flatfoot? 

Flatfoot is often a complex disorder, with diverse symptoms and varying degrees of deformity and disability. There are several types of flatfoot, all of which have one characteristic in common—partial or total collapse (loss) of the arch.

Other characteristics shared by most types of flatfoot include: 

  • “Toe drift,” where the toes  and front part of the foot point outward 
  • The heel tilts toward the outside and the ankle appears to turn in.
  • A short Achilles tendon, which  causes the heel to lift off the ground earlier when walking and may act as a deforming force
  • Bunions and hammertoes may occur in some people with flatfeet. 

Health problems such as rheumatoid arthritis or diabetes sometimes increase the risk of developing  flatfoot. In addition, adults who are overweight frequently have flatfoot. 

Flexible Flatfoot 

Flexible flatfoot is one of the most  common types of flatfoot. It typically begins in childhood or adolescence and continues into adulthood. It  usually occurs in both feet and  generally progresses in severity throughout the adult years. As  the deformity worsens, the soft  tissues (tendons and ligaments) of the arch may stretch or tear and  can become inflamed. 

The term “flexible” means that while the foot is flat when standing (weight-bearing), the arch returns when not standing. In the early stages of flexible flatfoot arthritis is not restricting motion of the arch and foot, but in the later stages arthritis may develop to such a point that the arch and foot become stiff. 

Symptoms, which may occur in some persons with flexible flatfoot, include:  

  • Pain in the heel, arch, ankle, or along the outside of the foot
  • “Turned-in” ankle 
  • Pain associated with a shin splint 
  • General weakness/fatigue in the foot or leg 

Diagnosis of Flexible Flatfoot

In diagnosing flatfoot, the podiatric  foot and ankle surgeon examines the foot and observes how it looks when you stand and sit. X-rays are usually taken to determine the severity of the disorder. If you are diagnosed with flexible flatfoot but you don’t have any symptoms, your podiatric surgeon will explain what you might expect in the future. 

Treatment Options 

If you experience symptoms  with flexible flatfoot, the podiatric surgeon may recommend various treatment options, including: 

  • Activity modifications. Cut down on activities that bring you pain  and avoid prolonged walking and standing to give your arches a rest. 
  • Weight loss. If you are overweight, try to lose weight. Putting too much weight on your arches may aggravate your symptoms. 
  • Orthotic devices. Your podiatric  surgeon can provide you with custom orthotic devices for your shoes to give more support to  the arches. 
  • Immobilization. In some cases, it may be necessary to use a  walking cast or to completely  avoid weight-bearing. 
  • Medications. Nonsteroidal anti inflammatory drugs (NSAIDs), such as ibuprofen, help reduce pain and inflammation. 
  • Physical therapy. Ultrasound  therapy or other physical therapy modalities may be used to  provide temporary relief. 
  • Shoe modifications. Wearing shoes that support the arches is important for anyone who has flatfoot. 
  • Surgery. In some patients whose pain is not adequately relieved  by other treatments, surgery may  be considered. 

Flatfoot Surgery 

A variety of surgical techniques is  available to correct flexible flatfoot. Your case may require one procedure  or a combination of procedures. All of these surgical techniques are aimed at relieving the symptoms and improving foot function. Among these procedures are tendon transfers or tendon lengthening procedures, realignment of one or more  bones, joint fusions, or insertion  of implant devices. 

In selecting the procedure or combination of procedures for your particular case, the podiatric surgeon will take into consideration the extent of your deformity based on the x-ray findings, your age, your activity level, and other factors. The length of the recovery period will vary, depending on the procedure or procedures performed. ▲ 

This information has been prepared by the Consumer Education Committee of the American College of Foot and Ankle Surgeons, a professional society of 5,700 podiatric foot and ankle surgeons. Members of the College are Doctors of Podiatric Medicine who have received additional training through surgical residency programs. 

The mission of the College is to promote superior care of foot and ankle surgical patients through education, research and the promotion of the highest professional standards. 

Copyright © 2004, American College of Foot and Ankle Surgeons • www.acfas.org