At 57, key hole surgery's role and outcomes are questionable.
She is having knee osteoarthritis, and should be treated with exercises and intrarticular injection(PRP or Hyaluronic acid) and knee exercises.
Next Steps
Try:
1. Regular knee quadriceps exercises ( static and knee bending).
2. Ice pack application will help
3.Medications like Cartigen DN and Enzomac forte will help.