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Vetter Hippo hands---they worked for Craig in a snow storm.
As an orthotist I have made many designs of functional hand splints for various pathologies. Lacking a long flexor tendon for a motorcyclist causes obvious problems. But there are a couple of solutions that are available. Sorry you live so far away as I could possibly help. But a small light weight low profile custom splint could be made to prevent hyperextension of the IP joint on the thumb. Preventing hyperextension of the IP joint would stabilize the joint allowing you to use distal thumb by using the muscle "opponens pollicis". The opponens pollicis "flexes or adducts" (depending on terminology) the MCP joint. That muscle basically putting you thumb in "opposition" to the fingers and also moves the thumb across the palm. The MCP joint is the larger joint at the base of the thumb. So stabilizing the IP joint and then use the opponens pollicis to push on whole thumb is an option. You might look around for a good orthotist or occupational therapist who could make something to stabilize your IP joint. I made a lot of these for folks with rheumatoid arthritis who loose function due to the ligamentous failure of some joints in the fingers. I hope this makes sense but I think you get the idea that if your IP joint was stable your distal phalange would be far more functional.
I'm curious what model Acerbis you're using? I may have to give them a try. Thanks!
Thanks for all the ideas.I might try heated gloves. But they sound like they have drawbacks. I don't like the idea of battery powered. And wiring up the sleeves for a half hour ride. I don't know. I'd do it for a longer ride, but...But I might try them all the same. My current muffs and grips solution is extremely effective. But the muffs are just a bit awkward and ugly.
Yeah thanks. I think that does make sense. I'll look into that - sounds interesting. My surgeon did offer to surgically fuse the top joint at about 45 degrees. I think this would have a similar effect, but for some reason I didn't like the idea. I'd already had a lot of failed surgery thereabouts that had left the thumb so full of scar tissue, it was never going to be worth having another shot at it. So maybe I'd just had enough of that.And a life of biking has not been kind to my thumbs. The other one had synthetic ligaments installed to stabilise the second joint down. Not that effective I'm afraid.
45 degrees is way too much if you were going for a fusion. 25 degrees would be far more functional.