Knees Bending Too Easily? Unexpected Flexibility May Be an Early Sign of Arthritis

Arthritis is mostly associated with joint pain and stiffness. However, it may be surprising to learn that excessive movement or an unusual sensation of “looseness” in the knee can also be an early warning sign of joint abnormalities and a potential red flag for arthritis. According to experts, even though flexibility is considered a positive attribute for movement, knee flexibility beyond the normal range, especially when accompanied by discomfort or instability, may point toward underlying joint instability or Internal Derangement of the Knee. Your knee is one of the most intricate joints in the human body. It is composed of bones, cartilage, ligaments, and synovial fluid that work together to allow smooth and coordinated movement. “When this

delicate balance is disrupted, as seen in arthritis, the joint may become unstable. Instead of stiffness in the early stages, individuals may experience a sensation of looseness or “giving way” in the knee,” said Dr Shabbir Sutterwala, Orthopaedic, Saifee Hospital.

Why does loose knee occur in arthritis?

According to Dr Sutterwala, it happens because arthritis – especially osteoarthritis gradually wears down the cartilage that cushions the bones. As cartilage deteriorates, the surrounding ligaments and soft tissues attempt to compensate, which can create a feeling of excessive flexibility or weakness. “In conditions like rheumatoid arthritis or other inflammatory forms of arthritis, the knee’s soft tissues are often affected as well. Inflammation of the joint lining, known as synovitis, can stretch and weaken the supporting structures around the knee. This may make the joint feel unusually flexible or unstable,” he added. As time passes, this instability progresses to persistent pain, swelling, and a reduced range of motion. Another contributing factor to abnormal knee flexibility is ligament laxity - seen in conditions like Ehlers-Danlos syndrome, or conditions that develop due to repetitive strain or previous injuries. “When ligaments become excessively loose, the knee experiences increased mechanical stress. This accelerates wear and tear of the cartilage and can eventually lead to the development or progression of osteoarthritis,” Dr Sutterwala explained.

Signs and symptoms of excessive knee flexibility linked to arthritis

• A feeling of laxity or instability while standing, walking, or climbing stairs
• Mild swelling or warmth around the knee joint
• A grating, clicking, or popping sensation during movement
• Discomfort after prolonged inactivity or excessive activity
• Gradual reduction in muscle strength or balance

Also read: This Everyday Habit Can Significantly Increase Your Risk of Arthritis

What to do if the symptoms persist?

Experts recommend not ignoring any of the symptoms if they persist, as early medical evaluation is essential to determine whether the flexibility is benign or indicative of joint degeneration. An orthopedic assessment may include X-rays or MRI scans to evaluate cartilage, ligaments, and joint alignment. Blood tests can also help rule out inflammatory or autoimmune forms of arthritis. Treatment typically focuses on:

• Improving joint stability
• Strengthening the muscles around the knee
• Reducing inflammation.

“Low-impact activities such as swimming and yoga, along with structured physiotherapy exercises, play a crucial role in restoring balance and protecting the joint. Additional measures may include weight management, supportive knee braces, and anti-inflammatory medications, when necessary,” said Dr Sutterwala.