Hard Painful Knot on the Bottom of My Foot


A hard painful knot on the bottom of your foot is something called a plantar fibroma 90%+ of the time. Find out the 100% most effective treatment options.



What is a plantar fibroma?


  • A plantar fibroma is a thick fibrous knot or nodule which develops in the arch of the foot.
  • The plantar fibroma is something that develops within the plantar fascia, which is a band of thick cord that attaches from your heel to the area around the toes in the bottom of the foot.
  • This fibroma can develop on just one or both feet. It can develop in numerous sponsoring just one spot. It can be very large in some cases the size of a golf ball, or can be very small almost like BBs.
  • The plantar fibroma is not considered malignant(This means less dangerous), this means that it is not cancerous. Although to be 100% sure, it makes sense to biopsy if it has suspicious characteristics.
  • This can be a very difficult problem to go away, very frequently low level treatments do not get the job done.



Causes of a Hard Painful Knot/Fibroma:


  • There are no obvious or clear causes of a plantar fibroma.
  • We personally like to think of it almost like scar tissue which develops in the band of tissue. The more stress and fraying of your plantar fascia that you have, this is more likely to be associated with a plantar fibroma.
  • There is a clear association between people who have plantar fashion pain and have plantar fibromas.
  • Although it is common to have plantar fascia pain without developing a plantar fibroma. Most people with plantar fasciitis do not develop a plantar fibroma.
  • In summary, there is no definitive improvement cause.



Signs and symptoms of a plantar fibroma:


  • These generally appear as a thickened and noticeable lump in the arch of the foot.
  • A plantar fibroma can feel firm to the touch, but it can generally be somewhat movable if you press it with your thumb and fingers.
  • This plantar fibroma can stay the same size or can get larger and develop and spread for some people.
  • Some people who have plantar fibromas have pain, but others do had not have any pain at all. Pain is usually mechanical in nature, this means that the more you walk on this not, the more bruising it will cause for you.
  • This pain is usually associated with hard surfaces pushing the slump in bump against the soft tissues in your skin. For example people who stand barefoot on hard surfaces will for sure have a lot more pain than someone with a very thick protective fat pad who stands on the carpet or since all day.



Diagnosis of a plantar fibroma:


  • To truly diagnose a plantar fibroma, your podiatrist will likely examine your foot and press and evaluate the area.
  • By assessing the consistency of the nodule, you can tell whether it is just the plantar fascia pain or a true nodule.
  • In our office we like to use a ultrasound almost immediately to evaluate this nodule and see if this is what it really is.
  • In some cases, an MRI may be needed, and if there is suspicious growth, a biopsy may be needed to further assess it.



Causes Of A Knot In Arch Or Heel Of Foot:


For all causes beyond a plantar fibroma, consider the following options:


1) Plantar Fasciitis:


Hard Painful Knot on the Bottom of My Foot
Muscle knots in the feet that feel more like sore muscles are almost always plantar fasciitis! This is just like your sore neck muscles after being overworked all day.


  • This is the most common source arch & bottom of the foot knots.
  • Inflammation can cause your arch ligaments to swell.
  • This leads to stiff & aching morning pain.
  • This is not a very hard lump, but a big swollen hard area.
  • It can feel similar to the muscles in your neck when they are sore.
  • This is much more common, but less of a hard lump than a plantar fibroma.


2) Plantar Fibroma:


knot bottom of foot
A knot in the bottom of foot that feels hard & circular is usually a plantar fibroma. This is the thickening of your connective tissue.


  • fibroma is a concentration of connective tissue.
  • This usually starts to trauma, but can occur for any reason.
  • This is more of a hard nodule than just a muscle knot.
  • This can feel like a hard pebble just under your skin.
  • If can range from 2mm to 5 cm!
  • It could be one bump or multiple bumps.
  • They are usually non-painful, but as you walk on them they start to hurt!


3) Foot Bump Cancer:


knot on heel of foot
A knot on the heel or bottom of the foot is almost never due to anything dangerous. But if it does seem suspicious, always go get it checked out to be safe!



  • This is very, very rare.
  • If you have a hard discrete bump, it is likely a fibroma or plantar fasciitis.
  • But even if it is very rare, MRI or X-ray should be done to rule out this very dangerous tumor.


4)Ganglionic Cyst:



knot in arch of foot
A knot in the arch or the top of the foot can be a ganglionic cyst. This usually occurs if the lump is soft. This is a pocket of fluid from your joints.


  • Ganglion cysts are swellings of fluid.
  • They are usually near foot joints.
  • The most common are the big toe joint, the middle of the foot and the ankle.
  • A cyst by definition is a sac filled with fluid and it can feel hard or soft.
  • These are usually not dangerous.


5)Outside OF The Foot Bump:


  • Outside of the foot bumps are also very common.
  • They can be both on the outside and the bottom of the foot.
  • This can be a bump by your pinky toe, along the outside middle of the foot of outside heel.
  • These are usually hard bone type knots.
knot bottom of foot
A knot in the bottom of the foot that feels like a hard nodule is likely a plantar fibroma. This is a connective tissue thickening that is easily palpable with your hands.



If The Foot Knot Is More Of a Hard Nodule Or Pebble:


This is almost always caused by a formation of hard connective tissue known as a plantar fibroma.


  • A plantar fibroma is a genetic condition that is not dangerous.
  • But can be painful and irritating!
  • It is very rarely a cancer, but if worried you should check it out.
  • But a plantar fibroma is not dangerous at all.
  • You can think of it simply as a “pebble” that is stuck under your skin.
  • By walking on it, it eventually does cause pain.


Hard Painful Knot on the Bottom of My Foot
A fibroma can occur anywhere else in the body, but it is usually the most painful in the sole of the foot.



Home Treatment Of Knots In The Feet:


  • If the knot is not that big or is just irritating the bottom of your foot, but you don’t want to get it removed then just treat the condition as if though it was plantar fasciitis and follow our four stage treatment guide:


Four Stage Bottom of the Foot Pain Treatment Guide.


  • Offloading the fibroma works well.
  • A pad can be cut out around it, if this works you never have to worry about it again.
  • An accomodative orthotic can work great for this condition.
  • Massage your arch using a tennis ball.
  • Use anti-inflammatories to decrease the inflammation when it flares up.
  • Use a frozen bottle of water to numb the arch for 15-20 minutes to feel better.
  • All this can be done while watching TV.



Hard Painful Knot on the Bottom of My Foot
A large component of treatment is stretching your calf and foot muscles to allow accommodation for the arch.


Other Non-invasive Treatments:


  • Transdermal Verapamil.
  • Stretching and massaging of the nodule.
  • Padding around the hard knot.
  • Physical Therapy to work the knot out over time.


Hard Painful Knot on the Bottom of My Foot
An injection could be used to treat a hard painful knot on the bottom of my foot.


Invasive Treatments:


  • Corticosteroid Injection.
  • Surgery is the most common and essential the only treatment method to actually remove this hard knot, all the other treatments focus on allievating the pain.


For more on A Hard Painful Knot on the Bottom of My Foot:


Plantar Fibroma