Getting a new knee is a big step, but surgery is only part of the process. What you do at home matters just as much. The best way to rehab a total knee replacement is to keep moving, build strength, and give your body enough time to heal.
You don’t need to rush through recovery. Small steps each day can help you walk better, bend your knee, and return to the things you enjoy.
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What Does Knee Replacement Surgery Involve?
When conservative options aren’t enough, your provider might recommend knee replacement surgery. Also known as arthroplasty, this procedure involves replacing the build of the damaged knee joint with plastic and metal parts to restore the normal function of the knee and then relieve chronic pain.
During surgery, your doctor removes damaged joint surfaces and replaces them with metal and plastic parts. Once surgery is over, the focus shifts to getting your knee moving again.
Effective Pain Management
Some pain is normal after surgery. Take your medicine as directed, and tell your doctor if the pain becomes hard to manage.
Walking as Soon as Possible
Most patients start walking with help soon after surgery. A walker or cane helps you stay steady while your leg gets stronger.
Physical Therapy
Your therapist will teach you how to bend, straighten, and strengthen your knee safely. These sessions are an important part of physical therapy after knee surgery.
Exercise
Stick with the exercises your therapist gives you. Doing a little each day is often better than pushing too hard.
Rest
Your knee also needs time to heal. Take breaks, use ice, and keep your leg raised when swelling increases.
What Exercises Are Not Good After Knee Replacement?
Not every workout is safe for a healing knee. Some activities put too much pressure on the joint or increase your chance of falling.
Running and Jogging
Avoid running while you recover. Even after healing, your surgeon may advise against high-impact exercise.
Weight Training
Heavy lifting can put too much strain on your knee. Start with lighter exercises when your therapist says you’re ready.
High-impact Sports or Aerobics
Put jumping exercises and sports with lots of quick turns on hold. Once your doctor clears you, you can try gentler activities like walking or swimming.
Hiking
Stick to flat, even paths for now. Steep hills and rocky trails can wait until your knee feels stronger and you’re more steady on your feet.
Rollerblading and Skateboarding
Both sports have a high risk of falling. Choose something that offers better support and control.
How Do You Loosen Tight Muscles After Knee Replacement: Exercises to Help You Recover
Your knee may feel stiff for several weeks. Gentle movement can help you regain strength and flexibility.
Try these exercises only after your therapist approves them.
Short Arc Quad Contractions
Place a rolled towel beneath your knee. Straighten your leg by lifting your heel, then lower it slowly.
Long Arc Quad Contractions
Sit on a chair with your feet on the floor. Lift one foot until your leg is straight out in front of you. Bring it back down slowly.
Glute Sets
While sitting or lying down, tighten the muscles in your bottom. Count to five, then let them relax.
Hip and Knee Flexion
Lie on your back and slowly slide your heel toward you. Go only as far as your knee will comfortably bend.
Hamstring Isometric Contractions
Keep your leg still and gently press your heel into the bed. Hold for a few seconds.
Straight Leg Raises
Keep your knee straight and tighten the muscles in your thigh. Lift your leg a few inches off the bed, then gently lower it again.
Prone Hamstring Curls
Lie on your stomach and bend your knee as much as feels comfortable. If lying down is difficult, try the same move while standing and holding a chair.
Standing Heel Raise
Hold a sturdy counter and slowly rise onto your toes. Lower your heels back to the floor.
Road to Recovery: How Long Does It Usually Take to Walk Normally Again After Knee Replacement?
Many people walk more comfortably within four to eight weeks. Others need a little longer, especially if they had trouble walking before surgery.
Your goal is to walk without limping or relying too much on support. Strengthening your knee muscles helps you get there.
What is the Best Way to Rehab a Total Knee Replacement: When Can I Get Back to My Usual Activities?
Recovery looks different for everyone. These milestones give you a rough idea of what to expect.
24 Hours
You may begin standing and walking short distances with help from hospital staff.
Three Days
Some patients are already home by this point. Others stay longer until they can move safely.
Two Weeks
Keep doing your home exercises and taking short walks. Your knee may still feel swollen and stiff.
Six Weeks
By now, getting dressed or walking around the house may feel less tiring. You might still need help with some tasks. Check with your surgeon before you start driving again.
Six Months +
Your knee may feel much better, but that doesn’t mean it’s done healing. You can still gain strength over the next few months. A little swelling or stiffness may stick around too.
How Long Will I Need Physical Therapy After the Surgery?
Some people need therapy for several weeks, while others benefit from a few months of care. Your progress will help decide how long you continue.
The American Academy of Orthopaedic Surgeons recommends exercises to restore movement and strength after knee replacement.
At Precision Sports Physical Therapy, we help patients rebuild strength and confidence through physical therapy after knee replacement.
When can you drive after knee replacement?
You may be ready to drive around four to six weeks after surgery, though some people need longer. Before getting behind the wheel, you must be able to brake quickly and safely. Check with your surgeon first, and don’t drive while taking opioid pain medicine.
What are the signs of complications during knee rehab?
A fever, fluid leaking from your wound, or redness that keeps spreading needs a call to your surgeon. Pain or swelling in one calf could be a blood clot, so get medical help right away. If you have sudden chest pain or trouble breathing, call emergency services.
When can I sleep on my side after knee replacement?
You can often sleep on your side once it feels comfortable, unless your surgeon gives other instructions. Try placing a pillow between your knees to reduce pressure. Avoid keeping a pillow directly beneath your operated knee while sleeping, since it can make straightening harder.
How do I manage swelling 3 weeks post-surgery?
Swelling is still common three weeks after knee replacement. Use ice, take breaks, and raise your leg as your care team advises. If swelling suddenly gets worse or comes with calf pain, contact your doctor.
When is it safe to return to work?
If you sit at a desk most of the day, you may be able to return sooner. Jobs that involve heavy lifting or long hours on your feet often need more recovery time. Many people go back within six to twelve weeks, but your surgeon can help you decide when you’re ready.
Can I climb stairs after knee replacement?
You may start practicing stairs with your therapist before leaving the hospital. Hold the handrail and step up with your stronger leg first. When going down, lead with your operated leg, and have someone help until you feel steady.
Some days your knee may feel better than others. Keep doing the exercises you’ve been given, but don’t push through sharp pain. If you’re unsure what to do next, contact Precision Sports Physical Therapy to book a visit and get help with your recovery.
