Following knee replacement surgery,

the author places great value on having a caregiver in the home during recuperation. The presence of a health care professional gives the patient more time to rest and gain strength, and a nurse or CNA can assist with pain medication management, food preparation, and small tasks, allowing the patient to fully focus on a rapid and complete recovery.
Why I Got Knee Replacement Surgery and How it Helped Me Get My Life Back

Empowher.com  February 2017