Hi and Welcome!
It is very common for one knee/leg to lag behind the other, with bilaterals. One reason is, no two knees recover the same, even on the same person, even done in the same surgery. 3 weeks is very early days in this year long (on average) recovery.
Here is another reason they might heal differently, one of our members posted this:
I watched a bilateral knee replacement when I was a nursing student. The patient happened to be a neighbor. It was quite a comfort to him that I was there. I was not that physically close to the surgical area because that's a super-sterile area. They wear space suits so they're not even breathing near the wound. I was by the patient's head. They did the left knee first and then the right, which went easier because they'd figured out the correct components on the left which means there was more tourniquet time, more putting on and taking off of components, and generally tweaking of the artificial joint on the left. So it was no surprise that the patient's right knee recovered more easily and with less swelling. Who knows how much each of our knees get tweaked and manipulated during the surgery, resulting in more tissue trauma?
I will leave you our Recovery Guidelines. Each article is short but very informative. Following these guidelines will help you have a less painful recovery.
Just keep in mind all people are different, as are the approaches to this recovery and rehab. The key is, “Find what works for
you.“ Your doctors, PTs and BoneSmart are available to help, but you are the final judge as to the recovery approach you choose.
Knee Recovery: The Guidelines
1.
Don’t worry: Your body will heal all by itself. Relax, let it, don't try and hurry it, don’t worry about any symptoms now, they are almost certainly temporary
2.
Control discomfort:
3.
Do what you want to do BUT
a. If it hurts, don't do it and don't allow anyone - especially a physical therapist - to do it to you
b. If your leg swells more or gets stiffer in the 24 hours after doing it, don't do it again.
4.
PT or exercise can be useful BUT take note of these
5.
At week 4 and after you should follow this
6.
Access to these pages on the website
The Recovery articles:
The importance of managing pain after a TKR and the pain chart
Swollen and stiff knee: what causes it?
Energy drain for TKRs
Elevation is the key
Ice to control pain and swelling
Heel slides and how to do them properly
Chart representation of TKR recovery
Healing: how long does it take?
Post op blues is a reality - be prepared for it
Sleep deprivation is pretty much inevitable - but what causes it?
There are also some cautionary articles here
Myth busting: no pain, no gain
Myth busting: the "window of opportunity" in TKR
Myth busting: on getting addicted to pain meds
We try to keep the forum a positive and safe place for our members to talk about their questions or concerns and to report successes with their joint replacement surgery.
While members may create as many threads as they like in the majority of BoneSmart’s forums, we ask that each member have only One Recovery Thread. This policy makes it easier to go back and review the member’s history before providing advice, so please post any updates or questions you have right here in this thread.