Josephine, I have to ask. Are you being intentionally rude to me or was that inadvertent? You, with your extensive knowledge and experience, may have determined that device probems are unlikely, but I don't know that. A doctor suggested this course of action, and on the "why no running" thread someone just described a catastrophic implant failure of a recalled device. My suggestion was neither reckless nor malicious, and I don't think it deserves a rude reply. I appreciate you sharing your knowledge, but it isn't necessary to be unkind.
I'm sorry to bring this up on the public forum, but since you don't read or respond to personal messages, I don't have another choice. Feel free to PM me so we don't derail this thread if you like.
Best
La
La, I'm going to take issue with you over this. I've just gone back and looked at the "Why no running" thread and I am the only one who has posted describing the failure of an implant. So, it must be my post you are talking about.
Perhaps you'd like to go back and read it again, because you have got a few things wrong.
Firstly, I did not, and I would not, describe the failure of my prosthesis as "catastrophic". Your view may differ, but I do not see it that way. I was told when I had the operation that the expected life of that prosthesis was 10 to 15 years. I had had 11 good years out of it. I thrashed it pretty hard, and things do wear out.
Secondly, it was not "a recalled device" and I did not say that it was. The unicompartmental Oxford knee replacement was slightly modified some time after my PKR was done. The device was never recalled.
Let me explain: This prosthesis is designed for a partial knee replacement. It is designed so that the meniscal bearing (the plastic spacer) moves backward and forward with movement of the knee. At the time that I had my PKR, the device relied entirely on the ligaments and muscles around the knee to hold that bearing in place. That is exactly what happened with me for eleven good years.
But, with continued use, the plastic spacer wore a little thinner, the gap between the metal pieces became wider, and the spacer popped out. I do not know if it broke as it popped out, or before, and no-one can tell.
In later years, the tibial component of the prosthesis was modified, so that a lip at the front helped to restrain the sliding spacer from moving too far forward. Yes, that might well have prevented my spacer from sliding out (who knows?) but that option was not available at the time I had my operation. The device I had inserted was the best available at the time. It certainly was not defective and those devices were never recalled.
For what it's worth, the Oxford knee replacement is still the most-widely used prosthesis for partial knee replacements.
I am an ex-nurse and I have a good understanding of the mechanics of what happened to me. I have tried to explain what happened. I hope you understand now.
In the interests of accuracy, I would prefer it if you did not misinterpret my post and use it to infer that it was an equipment failure or a defective implant that caused the failure.
I'm sorry if that sounds harsh, but to leap to the wrong conclusions from my post only serves to instill fear and doubt in other people.
Thank you.
Celle