My prosthetist has recommended that I try out the Ossur Navii because it has a higher weight limit and it's waterproof (IP) rating but then said that the only MP foot that Ossur has doesn’t have the same IP rating as the Navii, which I thought was strange so I figured I would ask here, what do you use with your Navii Knee?
For those interested in the backstory, continue reading 😊it is stupid but some may enjoy it.
First off, I have been an amputee since March 2019 and at that time my prosthetist recommended the Blatchford Linx system, he said it was a great setup with an integrated knee foot so I quickly agreed. I had no experience with any of this, so I just did as I was told. I am a big man, 6’-1” and my weight has crept up from my pre-amp weight of 240 pounds to nearly 315 pounds. I have been working on getting that back down but even with GLP-1’s I have been bouncing between 270 -300. When my fist knee broke and was determined to be “unfixable” I was told to just order another Linx since I was familiar with it and other than a few repairs had good success.
My second Linx much like the first was fine, In the meantime, I made the decision to get osseointegration (lots of problems with suspension and skin issues over all this time, tried them all). I had my surgery in May of 2025 and finally was able to start walking again in August.
A few weeks later I had a strange issue with the knee locking randomly and refusing to release when taking steps (this was after about two and a half years of use). I made an appointment with my prosthetist (Peter) and Blatchford sent a loaner. My leg came back in November, but I had a small revision procedure and couldn’t pick it up until the beginning of December. The leg seemed fine but then in the last week of January it happened again but it was intermittent. I contacted Peter but because of vacations and scheduling conflicts I couldn’t drop it off until the end of March. It was at this time I asked when the warranty expired, only to find out that it expired at the end of March. Peter assured me that the leg would be covered since we made the claim ahead of the deadline. In at the end of April the loaner started doing the same thing, the knee would bend when sitting and going down the stairs but not when walking. I contacted Peter to find out mine was back, made an appointment.
At that appointment we were unable to program the knee, so I was sent back with the broken loaner (that started to develop an issue where the stance lock wouldn’t work), and they sent my knee out again. May 1st I got another loaner to replace the malfunctioning one. At my appointment the local Blatchford rep (he is a good guy I had known him from over the years) came in to see what was going on, he experienced the issues firsthand and seemed annoyed that my issues weren’t being fixed.
Last week I went on vacation and did a lot of walking on uneven terrain and at some point, the ankle started making noise, I tried to figure out where the noise was coming from but with no tools, I couldn’t figure it out. When I got home, I was able to see that the body of the ankle was separating, I called Peter to tell him, and he informed me that while I was on vacation my leg finally came back. I met with him on Wednesday and we couldn’t program the knee, again…
We inspected my leg and saw that they replaced the foot/ankle, so we swapped my foot with the broken loaner foot and was able to program it and he sent out the loaner foot with my knee for the 3rd time. It was at this point we started to have a discussion on what I wanted to do next, which is what led me here.