You'll start doing gentle exercises within 24 hours of surgery. These include ankle pumps, straight leg raises, and light walking with support. The goal right now is to prevent blood clots, reduce swelling, and get your knee to bend to at least 90 degrees. This phase of exercise for stiff knee after surgery is critical — don't skip it even if it feels uncomfortable.
This is when physical therapy after knee replacement really kicks in. Your therapist will guide you through seated knee bends, heel slides, and stationary cycling. The aim is to get your knee flexion to 110–120 degrees. Swelling starts to reduce noticeably, and you may be walking more independently. Consistency here is everything.
Now you're moving into more active strengthening exercises. Short-arc quads, mini squats, step-ups, and resistance band work are a common part of this stage of physical therapy for knee replacement. Your new joint is more stable, and your focus shifts from just bending the knee to actually using it with power and control.
By month three, most patients can walk without a cane, climb stairs, and even do light household chores. Post knee replacement exercises continue, but they start to resemble normal fitness routines — walking programs, light cycling, water aerobics. This phase helps you regain confidence in your knee.
Don't stop exercising just because you feel "fine." The knee replacement implant needs continued muscle support to function well for 15–20 years. At this stage, knee replacement physical therapy shifts to maintenance — keeping the muscles strong, maintaining flexibility, and preventing future problems. Many patients continue some form of guided exercise beyond 12 months.
A stiff knee is one of the most common frustrations after knee replacement. It happens when scar tissue builds up or when the muscles around the joint tighten from lack of movement. The good news is that with the right exercise for stiff knee after surgery, most people can restore full or near-full range of motion.
Here are the most effective exercises recommended in knee replacement physical therapy programs for stiffness:
Lie flat and slowly slide your heel toward your buttocks. Hold for 5 seconds, then slide back. This gently stretches the knee and fights post-surgical stiffness.
Low-impact cycling is one of the best post knee replacement exercises for stiffness. Start with zero resistance and work up gradually as advised by your PT.
Sit in a chair and slowly straighten your leg, hold for 3–5 seconds, then lower. This targets the quadriceps — the key muscle for knee stability.
Exercising in water reduces joint load by up to 50%, making it perfect for patients who find land-based exercise for stiff knee after surgery too painful at first.
Calf stretches, hamstring stretches, and hip flexor stretches all help reduce tension around the knee joint and improve overall range of motion after replacement.
A structured walking program — starting with 10–15 minutes and building up slowly — remains one of the most effective and underrated post knee replacement exercises.
Traditional clinic-based physical therapy has been the go-to for decades. But a growing number of knee replacement patients across the US are discovering that virtual physical therapy is not only more convenient — it’s just as effective, if not more so, for many people.
Think about it: after a major surgery, the last thing you want to do is drive 30 minutes to a clinic three times a week, find parking, and wait in a lobby. With online physical therapy through Resolve 360, your therapist comes to you — through a secure video call, from the comfort of your living room.
Resolve 360 is a 100% online physical therapy platform. There is no physical clinic — all sessions happen via the Resolve 360 app or web platform. Here’s how it works for knee replacement patients:
Your licensed physical therapist conducts a full evaluation via video call — assessing your range of motion, strength, gait, and pain levels to create a personalized recovery plan.
Your therapist builds an exercise plan that matches exactly where you are in your recovery. Whether you're in week 2 or month 8, every session targets your specific needs.
Unlike videos on YouTube, Resolve 360's sessions are live and interactive. Your therapist watches you perform each exercise and provides real-time corrections — just like being in a clinic.
The app tracks your range of motion, strength gains, and exercise completion so both you and your therapist can see your recovery progress over time.
Every patient is different, and some people need physical therapy for knee replacement for longer than the typical 12 months. Here are clear signs that you should continue or re-engage with physical therapy after knee replacement:
Your knee still feels stiff in the morning and takes more than 15 minutes to loosen up. You’re unable to bend your knee past 110–115 degrees at the 3-month mark. You’re limping or compensating with your hip or opposite leg. You’re afraid to walk on uneven surfaces or stairs. You’ve noticed weakness returning after you stopped exercising. Pain has been returning even for simple tasks like rising from a chair.
If any of these sound familiar, it doesn’t mean something is “wrong” with your replacement — it usually just means your muscles and tissues need more structured attention. A few additional weeks or months of guided exercise for stiff knee after surgery can make a dramatic difference.
Knee replacement is one of the most successful surgeries in modern medicine — but only when it’s paired with consistent, guided rehabilitation. The question isn’t really “how long do I have to do this?” — it’s “how can I make the most of my recovery so I can get back to doing the things I love?”
Exercise for stiff knee after surgery, done correctly and consistently, is the single biggest factor in how well your new knee performs. Most patients benefit from structured physical therapy for at least 12 months, with some form of maintenance exercise continuing well beyond that.
And if getting to a clinic is difficult, you don’t have to let that be a barrier anymore. With online physical therapy through Resolve 360, you get access to experienced, licensed therapists who will guide your entire recovery — right from your phone or laptop. Your new knee deserves the best possible start. Make it count.
Join 50,000+ patients who trusted Resolve 360 for expert online rehabilitation. Personalized plans, live sessions, certified physios — and your first session is completely free.
Book My Free Consultation at Resolve 360 →
Dr. Nidhi Kumari
She has persuaded her bachelor’s from SGT University, Gurugram, she has done her internship at Dr. Ram Manohar Lohia Hospital, and persuade her Master in Physiotherapy from Chaudhary Charan Singh University, Meerut. She has previously worked with Orthocure clinic, Dr.Nasir physiotherapy rehabilitation, Quantum physiotherapy, and wellness center.
If you have more questions.
Dr. Nidhi
She has persuaded her bachelor’s from SGT University, Gurugram, she has done her internship at Dr. Ram Manohar Lohia Hospital, and persuade her Master in Physiotherapy from Chaudhary Charan Singh University, Meerut. She has previously worked with Orthocure clinic, Dr.Nasir physiotherapy rehabilitation, Quantum physiotherapy, and wellness center.
If you have more questions.
Also Read: Back Pain: Causes and Treatment
If you would like to know more about any of the health conditions, please fill up the form below and talk to Doctors on Resolve360 directly by asking a question.
We are your doctor’s first choice and trusted by 50,000+ patients.
We are your doctor’s first choice and trusted by 50,000+ patients.
We are your doctor’s first choice and trusted by 50,000+ patients.
Resolve360 is great platform for online physiotherapy.
I was suffering from scapula dyskinesia and had lot of pain in right shoulder movement. I was introduced to Resolve 360 by my oncologist.
Within a month (26 sessions) there was a considerable improvement. Sessions are very cost-effective and doctors are very kind and efficient.
Doctor David has been really great and helpful. I would highly recommend Resolve 360.
I took prenatal care program from Resolve 360. Dr. Preyrna was assigned to me and she has done commendable job. I did prenatal exercises under her supervision, she designed program according to my body need. With her help my pregnancy was healthy and I got good dilations at the time of delivery. I am blessed with a healthy baby girl and very happy with Resolve 360.
Best therapy sessions that too at home and timings are very flexible. I had a issue in my neck and lower back since almost 4 to 5 years, taken so many treatments and physio sessions. But all gave a temporary relief. Then my friend referred me this Resolve 360 in 2020, in starting i was hesitant as everything was online, but after taking almost 10 sessions i got much relief, and now i am almost free of pain. Thanks to the team of Resolve 360.
I had online Physiotherpy sessions by Prerana for my heel pain. ( Tendo Achilis Sprain).
Though virtual, it was more interactive.
She was very observant throughout the sessions, correcting me while doing the exercises and was assertive in her outlook.
I found her instructions and methodology very helpful. She is updated in her academic knowledge in the field of Physiotherpy. She clarified my doubts about the role of Laser and Ultrasound treatment quoting evidence based data. With my personal experience I agree with her opinion that these are more of placebo effect.
Physiotherpy though not a miracle treatment, is a compelling necessity to most of the musculoskeletal and neurological illnesses. It needs to be accepted as healthy way to live.
From being a couch potato with poor cardio respiratory system to reaching pre-athlete levels of fitness in a span of 3 months, my journey with Resolve360 and Dr.David (Physiotherapist) has been anything but magical!
About 3 to 4 months ago, my blood report showed very high bad cholesterol levels, I was low on stamina and had frequent breathing issues. My GP prescribed me cholesterol meds for a month but I felt that alone wouldn’t get me back in shape because I needed a major lifestyle overhaul.
Dr.David educated me about my condition in detail and where it could lead me to if I don’t take action in the long run. He put me on a balanced workout regime being easy with cardio workouts in the initial days and gradually upgraded it observing me closely. He also advises me on dietary choices and follows up frequently. During the initial days, my ears used to get blocked within 5 wall squats and I stop right away but now I do over 20 in one shot and hardly feel a thing. I used to lose balance and fall off over my face within 6 push-ups or 20 seconds of plank and now I do about 24 push-ups in one shot. My heart rate used to raise above 150 bpm doing jumping jacks or other cardio workout within 20-30 seconds. You won’t believe I don’t do any of these cardio workouts without additional weights on my feet these days and my heart rate and recovery are as steady as they could get. I couldn’t run for over 2 min without stopping and gasping and now I cover about 4.6 km in 30 min and follow-up with a 20 min walk. Not convinced yet? My VO2 Max (I use an Apple Watch to measure this stat) was just about 33 while I started with Resolve360 and David. That reflects a very poor cardio respiratory fitness for a 34 year old. It’s 43.5 today ! Easily above average. Please read upon about VO2 Max and how it directly relates to cardio respiratory fitness so you get an accurate picture about my monumental progress in the last 3 months. I’ve been trying to get into a regular physical workout and balanced diet discipline since my 20s but I’d never been so motivated as I’m now. Give these guys a try. After all, the best investment you could ever make is on your health !
We contacted resolve360 for our child speech issue and I must say Resolve 360 team and Apoorva doing a wonderful job.
Our speech therapist Jaslia from Resolve360 is having a excellent knowledge and it helps our child a lot. Jaslia understand child psychology very well. Due to her efforts, we are seeing tremendous improvements in our child. She has a strong dedication towards her work and her nature towards kids makes her a very special one. She has given us enough confidence, due to her efforts and excellent service, we are seeing good improvements for my child speech & communication skills.
I would highly recommend Jaslia & Resolve360 team for their excellent work. God bless you!!
