Open daily until 8pm
Joint Pain

Knee Osteoarthritis: How Physiotherapy Reduces Pain and Stiffness

Nhlamulo Khosa, BSc Physiotherapy (UCT)
HPCSA registered physiotherapist, N S Physiotherapy, Eco Park, Centurion
Published 18 October 2026
Quick answer

Exercise-based physiotherapy is a first-line treatment for knee osteoarthritis. Strengthening the thigh and hip muscles, staying active and managing weight reduce pain and improve walking for most people, and can delay or avoid knee replacement.

Osteoarthritis is the most common joint condition in adults. An X-ray showing 'wear and tear' does not mean your knee is doomed — many people with arthritis on X-ray have little pain once their muscles are strong.

Common symptoms

Stiffness after sitting or in the morning, pain on stairs and when getting up from a chair, swelling after activity and a feeling of grinding.

What physiotherapy involves

A tailored strengthening programme for the quadriceps, hamstrings and hips, balance work, walking advice, pacing strategies and, where useful, manual therapy and walking aids. We also help you plan activity so you stay active without flare-ups.

How many sessions?

Often 6 to 8 supervised sessions over 6 to 12 weeks, then you continue the programme independently with periodic reviews.

Frequently asked questions

Will exercise damage my arthritic knee?+

No. Appropriate exercise nourishes cartilage and strengthens support around the joint. Some discomfort during exercise is acceptable if it settles within 24 hours.

When should I consider a knee replacement?+

When pain and loss of function remain severe despite good exercise therapy. If you do have surgery, being stronger beforehand helps recovery.

Medical disclaimer: this article is general education and does not replace a personal assessment. If your pain is severe, worsening, or accompanied by numbness, weakness or loss of bladder or bowel control, seek care promptly.

Book with N S Physiotherapy

In clinic in Eco Park, Centurion, or home visits across Centurion and Midrand.

Related articles