Do You Need Physical Therapy After a Hip or Knee Replacement?

If you're preparing for a hip or knee replacement, one of the most common questions is: “Will I need physical therapy after surgery?” The short answer is yes — but what physical therapy looks like varies from person to person.

Rehabilitation is how you regain strength, mobility, and confidence after surgery. But not every patient needs the same program: some recover very well with a structured home exercise program, while others benefit from supervised outpatient therapy. The best approach depends on your joint, your progress, and your goals.

Why physical therapy matters after joint replacement

Surgery replaces the damaged joint — but surgery alone doesn't restore strength or movement. Rehabilitation is what:

The earlier you begin moving safely after surgery, the smoother recovery typically becomes.

When does physical therapy begin?

Sooner than most people expect: the day of surgery or the following morning. Before you leave the hospital or surgery center, a therapist helps you stand safely, walk with a walker, get in and out of bed, manage stairs if needed, and learn your first home exercises. This early movement is safe — and it actively reduces stiffness and lowers the risk of complications like blood clots.

Does every patient need formal physical therapy?

No — and this is the part that surprises people. Modern rapid-recovery protocols, better pain control, and minimally invasive technique mean many patients recover successfully with a structured home exercise program and steadily increasing daily walks.

Supervised outpatient therapy earns its place when you:

What happens during physical therapy?

Whether with a therapist or at home, early rehab focuses on the same foundations:

As healing progresses, therapy advances to balance work, stair training, strengthening, stationary cycling, and functional movements — sitting, standing, getting in and out of a car. The emphasis gradually shifts from recovering to returning to an active life.

Hip replacement rehabilitation timeline

For the hip, walking is the program — motion usually returns on its own with a muscle-sparing approach, so rehab is about building your walking, strength, and balance back up.

Full week-by-week detail: hip replacement recovery timeline.

Knee replacement rehabilitation timeline

The knee typically needs more focused rehabilitation than the hip, because restoring motion — full straightening and steadily better bending — is the early priority, and it takes deliberate work.

Full detail: knee replacement recovery timeline — and if swelling is your main frustration, see swelling after knee replacement.

Does physical therapy hurt?

Some discomfort is expected — exercise challenges healing muscles and soft tissue, so temporary soreness is normal. Severe pain is not. Post-exercise swelling is common and settles with ice, elevation, compression, and rest between sessions.

And remember: recovery is rarely perfectly linear. Some days feel better than others, and temporary setbacks are normal — the trend over weeks is what counts.

How long will I need physical therapy?

Every patient heals at a different pace, but a typical arc looks like:

The duration depends on your recovery, goals, and function — not a predetermined number of visits.

Warning signs during recovery

Call your surgeon if you notice:

Prompt evaluation catches problems early — most are far easier to fix when addressed quickly. Your full post-op instructions are in discharge instructions after hip & knee replacement.

The bottom line

Physical therapy is an important part of recovering from a hip or knee replacement — but it doesn't look the same for everyone. Some patients achieve excellent results with a structured home program and daily walking; others recover best with supervised therapy, especially when knee motion needs work. The goal isn't completing a certain number of visits — it's restoring strength, motion, and the activities you enjoy, on a plan tailored to you.

Wondering what your recovery would look like? Schedule a consultation with Dr. Harb — the rehabilitation plan is part of the conversation from day one.