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Making a prosthesis is a skill not all possess. There is a process with many steps to create a prosthetic leg correctly.
I decided I wanted a copper carbon-fiber prosthesis as my final socket. They poured plaster into my test socket. Once it hardened, they formed my carbon fiber socket based on my exact test socket that was already proven to be comfortable for me. They add the actual titanium components from my test socket to my new carbon fiber socket, including my loved All-Pro foot!
After trying on my new carbon fiber socket leg, it didn't seem to hold suction. We tried many combinations of socks, liners, and rings. Eventually, we found the right combination and got it to maintain suction.
Since my prosthetist's office is a 5 hour round trip drive from my house, I stayed the night. We wanted to be entirely sure my socket fit correctly before I signed off on it. Meaning, the prosthetist gets paid by the insurance.
On day two, my residual limb was extremely sore. I had been standing for several hours on fitting day, and now I wasn't comfortable walking at all. But I was determined to find out if the socket was acceptable.
I used the hotel gym to try walking, running, the bicycle, elliptical, and stairs. Then I went outside and tried the pavement of the parking lot as well as a grassy hill before heading back over to the prosthetist's office.
I had two issues. My gait was off. Meaning, my prosthesis was slightly shorter than my sound side and needed extra height. I also needed the back of my knee cut lower so I could bend my knee further.
After fixing both of these issues, my prosthetist rolled out a walking mat connected to his computer to measure my steps. This showed my gait, the weight on each side, my foot' direction, and many other essential aspects.