A fluid-filled swelling behind the knee that can cause pressure and aching.
It is often linked to arthritis or meniscus tears.
Deep Vein Thrombosis (DVT) – A Serious Concern
One of the most dangerous causes of pain behind the knee is a blood clot in the deep veins of the leg.
Symptoms may include swelling, redness, warmth, and tenderness. If left untreated, the clot can travel to the lungs, causing a life-threatening pulmonary embolism.
Osteoarthritis and Degenerative Changes
Wear and tear in the knee joint can cause pain that radiates behind the knee.
Stiffness, reduced mobility, and occasional swelling are common associated symptoms.
Warning Signs That Require Medical Attention
Although mild muscle pain behind the knee is usually harmless, certain warning signs should never be ignored:
Sudden, sharp, or severe pain that does not improve with rest.
Swelling, warmth, or redness in the calf or behind the knee.
Difficulty bearing weight or walking.
Numbness, tingling, or a feeling of weakness in the leg.
Persistent pain lasting more than a week without improvement.
Diagnosis and Treatment
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