Could my sesamoiditis actually be FHL tendonitis/tendinopathy?
I’m wondering if anyone has had what was diagnosed as sesamoiditis that ultimately turned out to be an issue with the flexor hallucis longus (FHL) tendon.
I’ve been dealing with intermittent mild-to-moderate pain (rarely more than a 3) underneath/around the ball of my foot near the sesamoids. An MRI in June showed an intersesamoidal ligament tear, minimal edema around the sesamoids and a small 1st MTP joint effusion. There was no fracture.
My orthopedic doctor thinks the main issue is irritation around the lateral sesamoid. He didn’t think the intersesamoidal ligament finding was clinically significant and didn’t think I had a turf toe/plantar plate-type injury. The current treatment has been a dancer’s pad/custom orthotic and PT.
Since early June, I’ve gone through several cycles of irritation/pain to weeks of pain-free activity — going for so long that I thought the issue had resolved itself. Sometimes the pain can come and go in the course of the day with no rhyme or reason.
What makes me question the diagnosis is how oddly the symptoms behave:
I cannot replicate the pain by pressing on the sesamoid area.
Walking seems to aggravate it more than anything, but sometimes I’ll get twinges of pain at rest.
I’ve taken up swimming since I’ve dialed back running. Sometimes kicking results in mild pain.
Running doesn’t really hurt it, even though I would expect running to aggravate sesamoiditis.
The pain can be intermittent and sometimes feels more nerve-like than like a straightforward structural injury.
I don’t have the typical constant pain I associate with a significant sesamoid injury.
I’m curious if anyone else has experienced something similar.