Why Balance Can Still Feel Off After Knee Replacement (What Strength Alone Does Not Fix) – Episode 106
Your operated leg may be getting stronger while quick turns, uneven ground, or walking through a dark room still leave you feeling less steady than you expected.
Strength supports your weight, but balance also depends on timing, coordination, vision, sensation, and the ability to respond when your body changes direction. Those abilities may continue to improve even after walking and stairs feel easier.
By Michelle Losurdo, PT, DPT, OCS, host of the Total Knee Success Podcast
Prefer to listen? Play Episode 106 below.
Have you recently had a total knee replacement, or are you preparing for surgery and wondering what recovery will really be like? Welcome to the Total Knee Success Podcast, your resource for total knee replacement recovery and life after surgery. Hosted by Michelle Losurdo, a trusted doctor of physical therapy and board-certified orthopedic clinical specialist, this show is designed for anyone considering, preparing for, or recovering from knee replacement surgery.
In about the time it takes to put a cold pack on your knee, each episode shares practical total knee surgery tips, evidence-based guidance, and clear strategies to help you manage pain, improve mobility, and thrive through the healing process. You’ll learn about post-operative knee rehab exercises, approaches to knee replacement physical therapy, and real-world tools for building confidence, improving sleep, maintaining a healthy diet, and regaining natural movement. From time to time, you’ll also hear patient perspectives and success stories that encourage you along the way.
Michelle also highlights the mindset and motivation strategies that make a lasting difference in recovery—helping you stay positive, focused, and resilient. And if you’re a family member, friend, or caregiver supporting someone through a knee replacement, you’ll find valuable insights here, too.
Please remember: Michelle is not your personal therapist and does not know you. This podcast provides general education and opinion only. Always consult your healthcare provider before making changes to your recovery plan. This podcast is not related to her clinical or teaching roles.
If you’re ready to feel stronger and more confident on your journey—or if you’re supporting someone you care about—this is the total knee replacement podcast that will help you succeed—one step at a time
In Episode 106, Michelle explains why balance can still require more care even as strength improves after knee replacement. Through James’s story, she describes turning, uneven ground, dim lighting, age-related changes in vision, the additional attention balance may require with age, and fatigue.
Read Episode 106 article & resources
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She also explains what details to share with a physical therapist or healthcare provider and when a new or sudden balance change requires medical evaluation.
Book! Making Sense of Pain After Knee Replacement
Book! Walking Like Yourself Again After Knee Replacement
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Resources at totalkneesuccess.com
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Medical Disclaimer: This podcast is for educational purposes only and does not constitute medical advice. The content is not intended to replace individualized medical guidance, diagnosis, or treatment. Always consult your surgeon, physical therapist, or other qualified healthcare provider regarding your specific condition, surgical decisions, and rehabilitation plan.
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Evidence-Based Content Statement: All information presented in this episode is grounded in peer-reviewed research, published clinical guidelines, and current best practices in orthopedics and rehabilitation.
Music Licensing Statement: Intro and outro music for the Total Knee Success Podcast is licensed for commercial use. Editing and production for this episode were completed using Descript.
Why Strength and Balance May Improve at Different Rates
Walking straight ahead follows a repeating pattern. Turning asks your body to slow its forward motion, shift weight, move one foot, and begin traveling in a new direction. Your brain uses information from your eyes, inner ears, muscles, joints, and skin to organize that movement.
After knee replacement, you may still be getting comfortable shifting onto your operated leg or moving the other foot around it. Taking several small steps through a turn can help your feet stay underneath you while reducing the need to twist over one planted foot. As strength and coordination improve, those steps may gradually become larger and the turn may feel smoother.
Strength helps you support your weight. Balance helps you control where that weight goes next.
Uneven Ground Changes Every Step
A sidewalk usually gives you a consistent landing place. Grass, gravel, and sloped ground can hide small dips or change firmness from one step to the next. Your feet and ankles adjust first, followed by your knees and hips as they help keep your weight moving in the intended direction.
Looking down may give you useful visual information while a surface is still challenging. With guided practice and greater familiarity, you may gradually look farther ahead to scan for changes while relying more on what you feel through your feet and legs. Research supports including balance and movement training as part of physical therapy after total knee replacement when it fits the individual person.1-5
Low Light Gives Your Brain Less Visual Information
Vision provides reference points for balance. The edge of a rug, the outline of a doorway, and a change in flooring all help you judge where you are and where your next step will land.
Your eyes also change with age. Your pupils gradually become smaller, allowing less light to reach your retina, and your eyes may take longer to adjust when you move from a bright room into a darker one.6,7 By your forties and fifties, you may begin to notice that you need more light to see the floor or more time to adjust at night.
Lower lighting makes your body rely more heavily on information from your inner ears and sensory receptors in your feet, ankles, knees, and hips. Better lighting along the entire route to the bathroom or kitchen can make floor edges, doorways, rugs, and other obstacles easier to see.
Balance May Require More Attention With Age
A 2026 study comparing younger and older adults found that maintaining balance required greater cortical involvement with age.8 In ordinary language, your brain may need to pay more attention to keeping you steady than it did when you were twenty or thirty.
You may notice yourself thinking more about foot placement, turning, or the surface beneath you. That attention becomes especially useful when the lighting is poor, the ground is uneven, or you are trying to do something else while walking.
Fatigue Can Change How Steady You Feel
A movement that feels controlled in the morning may require more concentration later in the day. As your operated leg becomes tired, your steps may shorten, weight shifting may change, and your muscle responses may become slower or less precise.
Pay attention to the situation rather than relying on the word balance alone. Notice which movement challenges you, where it happens, the time of day, what you had been doing beforehand, and what you feel. Those details give your physical therapist useful information when deciding whether to examine endurance, weight shifting, stepping response, coordination, or body-position awareness.
When to Contact a Healthcare Professional
This article focuses on balance challenges that continue gradually while strength and walking improve. A new or sudden change in balance needs medical evaluation. The CDC advises calling 911 immediately for sudden dizziness or trouble walking, loss of balance or coordination, one-sided facial or limb weakness, trouble speaking, sudden trouble seeing, or a sudden severe headache.9 If you are outside the United States, call your local emergency number. Fainting or chest pain also requires emergency medical care.
Report ongoing or recurring spinning or lightheadedness to your healthcare provider. If your balance changed after starting a medication or changing a dose, contact the prescribing clinician or pharmacist for assistance with your medications.
Tools and Resources
A cane may be useful temporarily in a challenging setting, such as uneven ground or a crowded event. Ask your physical therapist whether one is appropriate for that situation and how to adjust and use it correctly.
If pain, knee stiffness, or swelling changes how you walk, turn, or trust your operated knee, it may also affect how steady you feel. The expanded 2026 version of Making Sense of Pain After Knee Replacement explains how activity, swelling, sleep, stress, medication timing, and nervous system sensitivity may interact. It also helps you recognize symptom patterns across several days.
Why Your Knee Still Hurts, Feels Tight, and Changes From Day to Day (The Total Knee Success Series Book 1)
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Episode 107 continues this four-part series with the parts of a fall-prevention plan, including how to review your home, routines, and activities and decide where guidance from a healthcare professional may help.
Common Questions About Balance After Knee Replacement
Why can my balance still feel off when my operated leg is stronger?
Strength is only one part of balance. Timing, coordination, sensation, vision, attention, and your response to changes in direction or surface also contribute to staying steady.
Why are turns and uneven ground harder than walking straight?
Turning requires you to slow down, shift weight, reposition your feet, and travel in a new direction. Uneven ground changes the angle or firmness beneath each step, so your body has to make frequent adjustments.
What should I tell my physical therapist?
Describe the exact movement, location, time of day, and sensation. Mention whether the problem occurs during turns, on grass, in dim lighting, or after your operated leg becomes tired.
Educational disclaimer: This article provides general educational information and does not provide diagnosis, treatment, emergency assessment, or individualized medical advice. Consult your surgeon, physician, physical therapist, pharmacist, or another qualified healthcare professional about balance problems, dizziness, medications, falls, and exercise selection. Seek emergency medical care for sudden neurologic or cardiovascular symptoms.
References
- Moutzouri M, Gleeson N, Billis E, Tsepis E, Panoutsopoulou I, Gliatis J. The effect of total knee arthroplasty on patients’ balance and incidence of falls: a systematic review. Knee Surg Sports Traumatol Arthrosc. 2017;25(11):3439-3451. doi:10.1007/s00167-016-4355-z
- Bove AM, Carroll LA, Cone S, et al. Clinical practice guideline for physical therapist management of total knee arthroplasty: revision 2026. Phys Ther. 2026;106(7):pzag058. doi:10.1093/ptj/pzag058
- Domínguez-Navarro F, Igual-Camacho C, Silvestre-Muñoz A, Roig-Casasús S, Blasco JM. Effects of balance and proprioceptive training on total hip and knee replacement rehabilitation: a systematic review and meta-analysis. Gait Posture. 2018;62:68-74. doi:10.1016/j.gaitpost.2018.03.003
- Lee HG, An J, Lee BH. The effect of progressive dynamic balance training on physical function, the ability to balance and quality of life among elderly women who underwent a total knee arthroplasty: a double-blind randomized controlled trial. Int J Environ Res Public Health. 2021;18(5):2513. doi:10.3390/ijerph18052513
- Doma K, Grant A, Morris J. The effects of balance training on balance performance and functional outcome measures following total knee arthroplasty: a systematic review and meta-analysis. Sports Med. 2018;48(10):2367-2385. doi:10.1007/s40279-018-0964-7
- Gaffney AJ, Binns AM, Margrain TH. Aging and cone dark adaptation. Optom Vis Sci. 2012;89(8):1219-1224. doi:10.1097/OPX.0b013e318263c6b1
- Winn B, Whitaker D, Elliott DB, Phillips NJ. Factors affecting light-adapted pupil size in normal human subjects. Invest Ophthalmol Vis Sci. 1994;35(3):1132-1137.
- Legrand T, Mongold SJ, Müller L, et al. Aging increases the cortical resources allocated to static balance maintenance. Proc Natl Acad Sci U S A. 2026;123(22):e2524894123. doi:10.1073/pnas.2524894123
- Centers for Disease Control and Prevention. Signs and symptoms of stroke. Updated May 19, 2026. Accessed September 11, 2026.