Any BKA's on BF

[Nate552]

you guys rule.

This.

[botto]

correct.

[roboleg]

My name is Brent and am a below the knee amputee as of Sept 2010. Oct 2010 i received my first prosthesis and rode 100 feet the first day. Worked through the winter and started riding with a local club May of 2011 and am now up to 100-150 mi/wk.
Completed benefit ride yesterday of 50 miles with average of 18 mph.
I ride 2009 Trek 2.1 and 1982 Motobecane. I use Mtn bike shoes with spd pedals as mtn bike shoes are safer to walk in especially when you can feel one foot.
I started riding for rehab only but have now developed an enjoyment for the sport due largely to the support of riding club. I will always remember the day one on the riders, a rehab Dr., literally pushed me up my first killer hill.
It's not all about me but what we can do for others as this this good friend demonstrated that morning. By the way he was on a fixie.

[punkncat]

Great to hear Brent. My name is Martin, I have been an LBKA since 07 (in case that wasn't in the first post).

I was wondering, what do you do about your trimline in order to keep from rubbing the skin raw there?
Any special mods to the anterior side of the socket to make space for the tendons there?

[roboleg]

Got your message punkncat. Dont have enough post to reply privately.
I am right bk as of Sept 2010

[roboleg]

Hi Martin,

Usually I have to use a hand grinder, 41/2 in, to remove one to two incheson my new sockets. (still not in my final one yet but hope to be in a carbonfiber one this month). Neosporin helps all across the back where the top of thesocket rubs behind the knee. I only use a little and it does not affect theoverall grip of the liner. Besides, with only downward pressure while riding it’snot like it’s going anywhere.

[punkncat]

Be careful of using products with petroleum in them if you are using a silicone locking liner. Those products will degrade the liner and cause it to form a hole in the area effected. It ruins a very expensive component, and really blows to have a hole come up mid ride....you think that liner rubs you raw, wait till you get skin on the exterior cloth. I ended up being off bike for over a year due to a lesion that formed from this same issue, aggrivated by a poor "cycling" trimline.

[gbcb]

The first is that you have a more direct power transfer to the pedal, and also without the springiness of a foot you dont lose as much power. The second advantage is that the cleat is effectively where your heel would be, meaning you don't have to bend your knee as much, cutting back on skin breakdown on the back of your knee

Wow. I want a cycling peg now! The second advantage in particular sounds great. My situation's a bit different since I've got a rotationplasty rather than a standard BKA, but I've definitely had problems with skin breakdown related to "knee"-bending on long rides (my newest leg minimizes this, but it's still something I need to be aware of).

I wonder how much it would cost to get my previous leg converted, since it's just gathering dust in my closet. I've found that getting prosthetic stuff done in China is relatively cheap, but I don't see much in the way of experimentation. Unfortunately I don't have benajah's skills or friends to rely on

[punkncat]

I have been working with my prosthesist to make a "peg" like that, with the cleat on bottom. I just purchased some new cleats and aquired an old MTB shoe to use as a guide. My doc says he thinks there are enough random bits of various metals back in the workshop to make it out of what would otherwise be scrap.