What Happens to YOUR Knees When You Walk Down Stairs?

#kneepain #walkingdownstairs #stairclimbing What happens to your knees when you walk down stairs hit me one morning when I grabbed the railing just to make it to the kitchen. I thought I understood my own body - turns out the key atoms and energy shifting through my joints every step down are doing something I never stopped to think about. Walking downstairs is harder on the knee than walking up stairs, and the physics explained it in that plain, Richard Feynman style of thinking - no jargon, just what's actually happening. Knee pain during stair climbing crept up slowly, the way most mobility and joint problems do after a certain age. The science explained the pain and finally gave me something real to work with for recovery, rehabilitation, and keeping my leg strength and stability going. Chapter: 00:00 Intro 03:00 Why walking down stairs is harder on your knees than going up 08:00 The physics of joint load — what three times your body weight actually means 13:00 Muscle activation, gait mechanics, and where knee pain really starts 18:00 Step down exercise and rebuilding knee stability after 50 21:30 Balance, hip stability, and keeping your stairs for good References Harvard Health Publishing - Knee Pain When Going Down Stairs: Why It Happens and How Exercise Helps Protect Cartilage and Improve Joint Function. Mayo Clinic - Knee Pain: Causes, Symptoms, and Risk Factors Including Stair Descent Stress on the Patellofemoral Joint. Cleveland Clinic - Patellofemoral Pain Syndrome (Runner’s Knee): Pain During Stair Descent, Joint Loading, and Cartilage Irritation. American Academy of Orthopaedic Surgeons (AAOS) - Knee Osteoarthritis: Joint Degeneration, Stair Climbing/Descending Stress, and Treatment Options. Bennell KL, et al. Exercise for Osteoarthritis of the Knee: Effects on Pain, Function, and Cartilage Health. Arthritis Care & Research. Mündermann A, et al. Biomechanics of Stair Descent and Patellofemoral Joint Stress in Knee Pain Patients. Arthritis & Rheumatism. Kuster MS, et al. Knee Joint Loading During Stair Walking vs Level Walking. Journal of Biomechanics. 1995. Thomeé R, et al. Patellofemoral Pain Syndrome and Functional Movement Patterns in the Knee Joint. Sports Medicine. NIH / National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS) - Knee Pain, Cartilage Wear, and Joint Mechanics in Daily Activities. Crossley KM, et al. Patellofemoral Pain and Knee Loading During Functional Tasks Such as Stair Descent. British Journal of Sports Medicine.