Join Date: Jan 2010
Location: OTP South
Bikes: Spec Roubaix SL4, GT Traffic 1.0
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I just had a new leg completed and have been wanting to try a different foot. My last one was really good IMO (and I can't for the life of me think of what it is) as far as walking and performance. The major letdown is that ONE month out of warranty the foot is delaminating. Apparently I am not alone in the CF foot world, it is a common complaint.
After having tried a couple of different feet and not being particularly satisfied as compared to the current, and unwilling to go to them again after the failure, I have been given one of these new "Rush" feet. I have to say that I find it a bit worthy of concern being the first person within this company to use one, and no wonder as it appears the foot has only been on the market for a couple of months now.
I decided to try and read up on the foot a little. Its made by a company called Ability Dynamics. They claim that this new fiber composite they have from the airline industry acts and feels better than CF and will not fail as soon. (I noted that they didn't offer any longer a warranty) They have this "nifty" trademarked name and claim that it's been around and been in use for years, blah blah. Well, I am not Google-fu master, but aside from the manufacturer website, I see nothing, no-where that isn't a paid advertisement or review of the product making the same fabulous and vague claims with links back to some mystery users of the product...also glaring and spewing shills as far as I can tell. Now, I don't want to just run these folks down. It isn't my intent to call them out without further use of the foot, to be fair I have had it a week. Just call me a skeptic though. Usually where I see a lot of smoke I figure there is some fire. Here is some newcomer to the O&P world making fantabulous claims about some foot made of miracles and answering all our prayers, right?
Now, perhaps I am just in on the "ground floor" and am of the lucky few that get first dibs at what will be a renaissance in prosthetic foot technology....or maybe I am just a guinea pig for some new, untested fad....not like that has ever happened in the world of prothetics.
The foot is very dynamic. Read as mushy as hell. Is that a bad thing? Perhaps not always. My stiffest carbon foot is wonderful for activity, but rough as heck on my knee and really hard to walk in the yard in. The last foot, by far the best walking foot I have had so far, failed really fast and left me unwilling to spend another $4K on their product. It did work quite well with my knee and had a great range of motion. This foot mimics and even surpasses that by a long shot. It is almost scary watching this foot smash down under weight. It moves and pivots in every direction quite easily. I did note a rather irritating "grab" at the end of the stride on toe off, rather weird feedback from the return action of the spring. I am sure some further adjustment will help that and I am anxious to see if the increased spring causes any hip or back issues. There is no doubt that with this effective leg length difference it will show up somewhere. I will be trying a higher category of this same brand, just for comparison.
Anyone else out there using this foot, or familiar with some information on the composite?