The single biggest reason people delay knee replacement is a story they heard from someone whose surgery was done fifteen years ago. Techniques, implants and pain protocols have all changed.
Before surgery
Pre-habilitation matters more than most patients expect. Two to three weeks of quadriceps strengthening measurably improves how fast you walk afterwards. We also optimise sugar levels, treat any dental or urinary infection, and plan your discharge before you are admitted.
Day 0 to day 3
You will stand with support within four to six hours of surgery. Walking with a frame starts the same evening, stairs on day two, and most patients go home on day three. Pain is controlled with a nerve block plus oral medication rather than heavy sedation.
Week 1 to week 6
This is the period that decides your long-term range of movement. Daily physiotherapy is not optional. Expect to reach around 100–110 degrees of bend by week six, walk without support indoors, and stop needing regular painkillers.
Month 3 to month 6
Swelling settles, stairs become natural, and you can drive, travel and return to work. Cycling and swimming are encouraged. Running and jumping sports are not.
What decides how long the implant lasts
Accurate alignment during surgery, keeping your weight in check, and doing the physiotherapy properly in the first six weeks. None of these are glamorous, and all three matter more than the brand of implant.
Realistic expectations
A replaced knee is an excellent knee, not a young knee. You may feel mild clicking, some numbness near the scar, and occasional awareness of the joint in cold weather. What almost everyone gets back is the ability to walk without pain.
