Any patient who sustains a significant impairment and is unresponsive to alternative conservative therapies may have knee replacement surgery. Although there is no valid age restriction for knee arthroplasty, the average patient age for this procedure is 65. Significantly, knee nerve rhizotomy may relieve chronic knee pain, and it's a better option than surgery for some people. Generally speaking, doctors consider knee surgery the last resource. • In general, the artificial joint lasts 15 to 20 years, after which patients may need a new surgical intervention. • Arthroplasty recovery time takes from 8 to 24 weeks. • The patient may return to work after 14 days. • Some medical conditions are total contraindications for knee surgery. • Major surgical interventions expose to important risks and complications. • Neuropathy knee pain or pain produced by nerve damage may be a contraindication for knee surgery. • The optimal age for total knee arthroplasty is 70 years.