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Tuesday, December 24, 2013

Ball of the Foot Pain: Email Advice with MRI Images

This nice patient mailed me her CD from New Zealand. She is suffering from pain under and in the big toe joint from many years. This is my report to her.


Image of Tibial Sesamoid under the first metatarsal showing irregularities within the bone. The bone does not look totally healthy, but is not fractured or fragmented.

A slightly different image of the tibial sesamoid. The fibular sesamoid looked healthier. This can simply be from favoring her foot with some demineralization of the bone.

Here a large bursae or ganglion cyst is seen under the tibial sesamoid.  Sesamoid Fractures are often diagnosed when, in fact, the source of pain is in the soft tissue swelling under the sesamoid

Another image of the soft tissue swelling with some swelling in the tibial sesamoid (very slight).

Here we are at the joint level with our slice. The irregular white areas can be also seen below in the next image. This abnormal tissue arises from the plantar (bottom) medial side of the joint (arch side). This tissue, referred to as chronic synovitis, can get trapped in the joint and constantly irritated. Again, since it is on the tibial sesamoid side, it is often misdiagnosed.

Here the irregular soft tissue appears to be coming from the side of the joint. 

Another image of the same soft tissue swelling. When it arises from a joint, it is called a ganglion cyst. This may need surgery to remove the sac of tissue and tie off the stalk where it comes off the joint. 

Great image of this soft tissue mass causing so much problems.

These sacs can be injected with cortisone, not into the joint, to see if they will reduce. If not, they are removed.

Another side image of this mass.


From this view, and others, we know the cyst is filled with fluid. The problem with cortisone is not to inject other than the cyst which is quite small. If your doc feels uneasy about injecting, he/she may recommend surgical removal as a safer approach. Cortisone placed in the wrong spot can be dangerous.

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Thank you very much for leaving a comment. Due to my time restraints, some comments may not be answered.I will answer questions that I feel will help the community as a whole.. I can only answer medical questions in a general form. No specific answers can be given. Please consult a podiatrist, therapist, orthopedist, or sports medicine physician in your area for specific questions.

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