Physical Therapy for Hip & Knee Arthritis

Of all the nonsurgical tools for hip and knee arthritis, physical therapy may be the most consistently useful — and the most underestimated. It doesn't reverse arthritis, but it can meaningfully reduce pain, improve how you move, and help you stay active. For many patients with mild to moderate arthritis, a thoughtful PT program is the foundation of the whole plan.

What physical therapy is

Physical therapy for arthritis is a structured program of targeted strengthening, mobility work, and (often) manual therapy, designed and supervised by a licensed physical therapist. The aim isn't generic fitness — it's improving how the specific joint functions and how the muscles around it support and protect it.

How it works for arthritis

Arthritic joints work better when the muscles around them are strong and the joint moves through its available range. A good PT program works through several mechanisms at once:

The patient who does this work consistently tends to do meaningfully better than the patient who doesn't — independent of how advanced the arthritis is on imaging.

What a course of PT looks like

A typical course is 2–3 visits per week for 6–12 weeks, with the program adjusted as you progress. Each visit usually includes a combination of:

• Supervised exercise — the core of every session.
• Manual therapy — hands-on techniques to improve mobility and reduce pain.
• Modalities as appropriate — heat or ice, TENS, or ultrasound, depending on what helps.
• Home-program instruction and progression — the part that matters most between visits.

For patients who find land-based exercise too painful initially, aquatic (pool) therapy is often an excellent bridge. The water reduces joint load so you can build strength and range of motion without the same pain that land work might cause.

The home program — where the work happens

Visits to the therapist are valuable, but the daily home program is where most of the gain comes from. A few targeted exercises done consistently — most days of the week, for 15 to 30 minutes — tends to outperform sporadic visits without follow-through. Patients who treat the home program as optional don't get the same results, and that's the single most common reason a course of PT “doesn't work.”

For patients heading toward surgery, this matters in another way too — a strong, well-prepared joint comes back faster. Our guide to exercises before joint replacement covers the prehab side specifically, and exercises after joint replacement carries the same principles forward into recovery.

When PT makes the most sense

It tends to be most useful in specific situations:

When PT alone isn't enough

Physical therapy has limits, and a good plan acknowledges them. When arthritis is advanced — bone-on-bone with significant deformity or mechanical symptoms — strengthening the muscles around the joint can only do so much. If a thoughtful course of PT and other nonsurgical measures aren't getting you to a quality of life you're satisfied with, that's a normal point in the plan to reassess. See the signs you may need a hip replacement or signs you may need a knee replacement for what that conversation usually involves.

Insurance and cost

Physical therapy is a long-established, mainstream part of arthritis care and is generally covered by insurance. Coverage specifics vary by plan — visit limits, copays, and referral requirements — so it's worth confirming with your insurer, but for most patients PT is far more accessible than elective options such as PRP.

Where PT fits

Physical therapy is one tool within a larger plan that's matched to your diagnosis. It pairs well with other nonsurgical options rather than competing with them. For the bigger picture, see the full nonsurgical treatment continuum, cortisone injections, hyaluronic acid (gel) injections, and the broader role of activity modification in living well with arthritis.