If you have found a lump in your arch, more than likely you have
developed a plantar fibroma. A plantar fibroma (also known as plantar
fibromatosis) is a benign growth or nodule, really a thickening, of the
plantar fascia – a thick ligament in the bottom of your foot. If you
have found a bump or lump in your arch, make an appointment to see us in
our Seattle foot and ankle clinic.
Cause of Plantar Fibromas
No one is quite sure of the cause of plantar fibomas, but there is evidence that trauma to the plantar fascia may cause them to form. The most common type of trauma is simply over-stretching of the plantar fascia due to the arch flattening too much. When the arch flattens, the foot gets longer and this stretches the fascia. In some people this excessive stretching can lead to formation of fibromas.
Are Plantar Fibromas Painful?
The fibroma itself doesn’t cause pain, but pressure on the lump can lead to pain in the arch when walking or standing.
We can usually diagnose the lumps in your arch by examining your foot. If further information is required we can visualize the mass using diagnostic ultrasound in our office.
Treatment of Plantar Fibromas
Custom orthotics are the most effective treatment for plantar fibromas. Orthotics must accomplish two things to best treat this problem:
To decrease tension, we prescribe an orthotic that hugs your arch very
close – this is called a total contact orthotic. By aggressively
supporting your arch, we prevent the foot from flattening and decrease
tension on the plantar fascia.
We have to be very careful, however, because an orthotic that hugs your arch very close could irritate the plantar fibroma. To prevent this, we have an indentation or pocket added to the orthotic exactly in the location of the fibroma. This acts to distribute pressure off of the lump.
We are experts in providing orthotics that are both extremely effective and comfortable. Make an appointment today to see us in our Seattle clinic.
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Douglas Hale, DPM & Lawrence Huppin, DPM
Foot and Ankle Center of Washington, Seattle
The material provided on this web site is for informative purposes only.
If you need specific medical advice, please contact the office for an appointment.