Hello & welcome to Just Answer! If you have any questions after reading my answer, be sure to let me know.
I am sorry to hear about your medical problems
I understand that you have many concerns and questions regarding knee replacement
I really cannot comment on whether you do need knee replacement or not,
but from your description and the history of prior surgery, it appears likely that you may be a good candidate for the same
Doctors generally try to delay total knee replacement for as long as possible in favor of less invasive treatments. However for patients with advanced joint disease, knee replacement offers the chance for relief from pain and a return to normal activities.
Yes, I would like to find out more information before I go ahead with this surgery, such as how long it lasts, is there full recovery, will I have limited mobility or strength. and what are any alternatives
The implant can last for decades but it depends on a lot of variables,
as far as alternatives are concerned, most of these are experimental with limited evidence and the results in advanced disease are not great
but again this needs to be discussed as per individual case
The surgery lasts for a couple of hours in most cases,
and the uncomplicated recovery would be able to make you walk with a cane by about 6 weeks,
You should be able to do almost everything that you did before,
contact sports need to be avoided,
You would need to avoid any activity that may put excessive strain on the joint,
But tennis, hiking should be alright
is there anything else that I can assist with ?
Is there pain or any unusual sensations with the knee replacement, I mean after full recovery?
After full recovery there is unlikely to be any significant pain
or unusual sensation
There may be some restriction of extreme movements but that's generally it
Any limited mobility or strength?
I would suggest the following links for some additional information
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