The inability to bend your knee can stem from several issues, ranging from minor injuries to more serious conditions. Let's explore the common causes.
Possible Causes of Knee Bending Difficulty
Several factors can restrict knee bending. These include:
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True Locked Knee: This occurs when torn knee cartilage becomes lodged within the joint, physically preventing movement. This is mentioned in both the May 4, 2023 summary and the November 19, 2024 Verywellhealth article.
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Pseudo-Locked Knee: Severe knee pain often triggers a protective response where muscles tense up, limiting movement to avoid further pain. This is also noted in the May 4, 2023 summary.
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Torn Ligaments or Meniscus: Injuries to the ligaments or meniscus can significantly impair bending and cause pain. (RehabAccess.com)
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Osteoarthritis: This degenerative joint disease causes cartilage breakdown, leading to stiffness, pain, and reduced range of motion. (Guthrie.org, Gomberamd.com)
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Bursitis: Inflammation of the bursae (fluid-filled sacs cushioning the knee) can cause pain and restrict movement. (Guthrie.org)
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Ligament Strain or Tendonitis: These injuries, affecting the tendons and ligaments around the knee, can lead to pain and stiffness. (Guthrie.org, Gomberamd.com, AlignHC.com.au)
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Inflamed Tendons: Inflammation in the tendons connecting your kneecap to the shinbone (patellar tendinitis) can cause stiffness, swelling, and inability to bend your knee fully. (Gomberamd.com, AlignHC.com.au)
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Bone Fractures or Infections: These serious conditions can severely limit knee movement. (Guthrie.org)
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Hyperextended Knee: Bending the knee backward past its normal range can cause injury and restrict movement. (Cleveland Clinic)
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Swelling: Internal swelling can restrict joint movement, similar to a hinge with an obstruction. (Reddit r/KneeInjuries)
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Muscle Imbalances: Overuse or improper muscle use can lead to pain and reduced range of motion. (KneePainCentersofAmerica.com)
Seeking Professional Help
If you're unable to bend your knee, it's crucial to seek medical attention. A proper diagnosis is vital for effective treatment. Delaying treatment can worsen the condition. The cause and treatment will vary depending on the underlying problem.
