foot "lesion" from volcanic rock: treat it like a blister?

I don't know what the medical term is, but I got the worst end of a relationship with a volcanic rock. Living in the Canary Islands, I learned very early in barefoot running that stepping on glass was a delight compared to sharp volcanic stones. However, I had a "run in" with a volcanic rock.

I was just starting to go out on a gentle run on a sandy & lightly stony path, when I stepped down on the corner of a volcanic rock that was protruding out of the sand. There are lots of kinds of volcanic rocks and this was the sharp charcoal-like kind. On stepping down on the corner of the rock, it nipped the skin right open and left a chunk of skin dangling from my foot.

I trimmed off the dangling skin, washed the foot as well as I could and I have been wearing a band-aid with triple antibiotic ointment. I change the bandaid every 8 hours. The skin around the "opening" is wet & soft from the bandaid.

I would GREATLY appreciate and be so very
thankful for any advice or recommendations to help it repair itself quickly & completely. It looks like a horrible blister that blew open very deeply, but I am not sure if there is more or less that I should be doing.

PS I am glad it is Holy Week (spring break) and wouldn't been training with my shod friends any way ... as I'd like to keep it a secret from them, so they do not have ammunition against barefoot running! :)

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I've done this to myself a few times, though bushwhacking/hiking (stepping on a dead branch that had a broken off side branch sticking out). That looks small enough that it ought to heal just fine.

I've tried a number of different things, and what seems to work best is what you are doing: antibiotic and bandage for maybe 3-5 days. Don't worry if it keeps weeping during that time. (BTW, the very best bandages are Band-Aid's SportStrips. They seem to have the best glue of any I've found.)

After the 3-5 day period leave the bandage and antibiotic off when going to bed and overnight it will probably form a decent and dry scab that will protect it fairly well. It won't hurt to use the bandage during the day if necessary (though I wouldn't bother with the antibiotic any more), but it might get a bit moist again. Let it dry again at night. Rinse. Repeat until you're comfortable with its current state.
 
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Hello Canary Island Feet -

What I would do with your foot injury is yes treat it almost like a blister - you want to keep it clean, dry and away from outside surfaces so best is really to avoid being barefoot.

I would suggest topical betadine or iodine as this is a drying agent as well as anti-microbial. I would use a dry bandage versus a bandaid as they trap moisture. Give it a up to a week and you should be back to yourself.

Any questions please let me know!
 
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Ahcuah, Thanks for the great ideas!
 
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Dr Emily, Thanks for the clear recommendations! Yes, I will try the betadine or iodine, but fearing I will cry like a baby with the sting! :)
 
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Paraganek, thanks for connecting me to your post! I took their advice and my foot is looking amazing. I am now not wearing a band-aid, but wear one when I ran in NewBalance Minimus as sandals rub right wear the opening is. I did 18kms that way a few days later, 8 kms a day ago. It is amazing how the foot heals so quickly! I will try to take a photo tonight to show what it looks like a week after. I am sure age is one of the big determiners of healing speed, but makes me wonder if barefooting contributes to faster healing?
 
I am amazed how fast a foot can heal in one week! ... but it is very uncomfortable to take a photo of the bottom one's foot! :)
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