Short answer
Joint replacement relieves arthritis pain, but balance and joint position sense (proprioception) can lag behind. Years of arthritis, the surgery itself, swelling and muscle weakness all change the signals the joint sends to the brain and how the leg reacts. Rehabilitation that adds balance and walking practice to strength work helps restore steady walking and reduce fall risk after surgery1.
Answered by Dr. Manan Patel, PT, DPT, TPS, Certified Vestibular Specialist and Therapeutic Pain Specialist. Updated October 18, 2026.
Why does balance change after joint replacement?
Arthritis gradually changes how you load the leg. Surgery affects the tissues around the joint, and swelling and pain inhibit the thigh muscles in the early weeks. The new joint does not have the same sensors as the natural one, so the brain relies more on the surrounding muscles and other balance inputs. Strength often returns faster than balance and confidence.
What should rehab include besides strength?
- Weight shifting and single-leg balance on the operated side
- Walking practice to restore an even, confident pattern
- Stairs, curbs and getting in and out of the car
- Balance on varied surfaces as healing allows
The physical therapy guideline for knee replacement supports progressive strength training and functional exercise after surgery1.
When is a balance check worth it after surgery?
If you still feel unsteady, avoid stairs, hold on to furniture or have had a fall or near-fall months after surgery, a balance evaluation can find what is holding you back. Dizziness after surgery, such as when rolling in bed, can also be BPPV and is worth testing.
Where can I get post-op balance therapy in Alpharetta or Cumming?
Our Cumming and Alpharetta clinics provide orthopedic rehabilitation after knee and hip replacement, following your surgeon's protocol, with balance testing on BioSway. Patients come from Johns Creek, Milton, Roswell, Suwanee and Forsyth County.
Where can I get help in Alpharetta, Cumming and nearby?
Dr. Manan Patel, PT, DPT, TPS and our team of physical therapists see patients from Alpharetta, Johns Creek, Milton, Roswell, Cumming, Suwanee, Sugar Hill, Buford, Duluth and Forsyth County at two North Atlanta clinics. Every visit is 60 minutes, one-on-one, and urgent appointments are available within 48 hours. We are in-network with Traditional Medicare, BCBS / Anthem and Tricare, and offer a $129 rate per visit for self-pay and out-of-network plans. Not sure where to start? Take the free symptom self-check, or visit our Alpharetta clinic or Cumming clinic page.
Cumming clinic
Off GA-400 Exit 13 on Peachtree Parkway
Cumming, GA 30041
Alpharetta clinic
Inside Georgia Brain & Spine Physical Therapy
Alpharetta, GA 30022
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References
- Jette DU, et al. Physical Therapist Management of Total Knee Arthroplasty. Physical Therapy. 2020.
- Sherrington C, et al. Exercise for preventing falls in older people living in the community. Cochrane Database of Systematic Reviews. 2019.
This answer is general education, not a diagnosis or a substitute for an examination. If you have new or worsening symptoms, contact your doctor. Call 911 for sudden severe dizziness with trouble speaking, weakness, numbness, double vision or a severe headache.
