Knee replacement is most often performed between 60–75 years, but the right time is when knee pain limits your quality of life despite conservative treatment. Modern robotic implants last 20–25+ years, so younger patients (50s) with severe arthritis no longer need to wait.
Why age matters less than it used to
Modern implants and robotic precision have extended implant life from 15 years to 25+ years. This makes surgery in your 50s a reasonable choice if you're in pain.
The cost of waiting too long
Severe arthritis causes muscle wasting, joint deformity and reduced general fitness. Operating earlier in better physical condition gives a smoother recovery and better long-term outcome.
When to wait
If physiotherapy, weight loss and injections still give you a manageable life, you can wait. Surgery is the right choice when pain dominates your daily life.