I am new to forum but have to share my experience of having a Kinespring by moximed implanted to remedy knee joint pain caused by osteo arthritis(I had a build up of bone at inside edge of knee joint and damaged cartilage).
I am 55 male and enjoy mountain biking and snowboarding and work as a handyman so am reasonably active.
I bashed the inside of my knee in my youth and am tall and have dodgy knees in my family.
Joint pain would stop me being active several days a month.
I was offered a choice of ;
(a)half knee joint,but these could wear out at 10-15 years and would need replacement again due to my sports.
(b)A splitting of shin bone to widen base of knee joint with a bone wedge taken from pelvis to jam it open.
(c)A kinespring implant that would screw onto side of knee with plates screwed to bones top and bottom of knee joint and hold the knee joint open relieving pressure on cartilage and reducing joint pain.Transfers weight to outer side of knee which in my case was sound.
My surgeon was upfront explaining that inflammation was a problem and there has been several modifications as the kinespring has evolved.
Originally 2 parallel springs in a sheath it is now a single spring.
I understand that implanting a mechanical device in your body is going to take a lot of rehabilitation but I have not had a lot of advice as it is such a new procedure.
The operation was straightforward and I was home following day walking on crutches and able to bend my knee more than 90 degrees.
Swelling was down and I was off meds at 2 weeks (dicl and cocod).
Walking without crutches and driving at 3 weeks.
Original joint pain was completely gone but I had a tearing pain below my kneecap which I thought was the screws coming loose but I now believe to be the ligaments or tendon bits that ties to the top of the shin bone adjusting to new length of joint.
After long walks, walking with my toes pointing up helped pain.This tearing feeling has now completely gone by 6 weeks.
No physio apart from originally being shown how to do stairs on crutches.
I still get swelling and pain if I overdo it,stiffness first thing in morning but ok once going.
Original joint pain reoccurred once when I wore an old pair of walking boots for a day.I will try a new pair that are not so set in their ways!
Stairs,or rather lots of stairs like in blocks of apartments where I work and kneeling are still aggravating the acceptance process.
So to summarise, I am 60-70% happy with my choice, I think it will settle down through time.I am now at 3 mths.
It was hard to find any information on the process and others experiences because it is new.I decided to go for it as it is non invasive and I reckoned if my body didn't accept it, it could always be unscrewed and removed.I also liked the idea that the unloaded cartlidge may regenerate itself,maybe this is wishful thinking but who knows?
Technology like this could be the answer for many people but the fear of litigation slows the advance,maybe they will give it to the third world
who will be grateful to try it and approve it first.

Hi, I too have been offered this operation was humming and haeeing about it, in terrible pain and till i saw this post was still thinking about it........PAIN FREE i have got to give it a go im so gratefull for you for writing this as info is still not available, thank you , NIA

Thank you for sharing your experience with the Kinespring.  I am interested in learning as much as possible, especially from a patient's viewpoint. 

I am 32 years old, and have had 8 surgeries for the medial side of my right knee including two meniscal transplants.  I am unfortunately having knee pain in full extension and back to wearing knee braces, etc.  I am optimistic about the Kinespring transplant, however!  I am a candidate to receive one next month and I am hoping for the best, as we all are.

I have a few questions for those who have had one:  how much pain were you in prior to the implant vs. post implant?  How is your range of motion?

Thanks!

Wobbley Chester