How many millimeters of knee joint effusion is considered within the normal range?
In general, knee joint effusion less than 4mm is considered within the normal range. Specific analysis is as follows:
Knee joint effusion refers to an excessive accumulation of fluid retained within the knee joint. Typically, when the effusion exceeds 4mm, it indicates increased fluid in the knee joint, which may lead to symptoms such as joint swelling and pain, affecting joint mobility. Therefore, effusion under 4mm is regarded as normal. Common causes of knee joint effusion include trauma, infection, and degenerative joint diseases. Patients are advised to follow medical instructions and take medications such as pyrazinamide tablets and ethambutol hydrochloride tablets for treatment.
Patients with increased knee joint effusion should seek timely medical evaluation to determine the underlying cause and receive standardized treatment under a doctor's guidance to avoid delaying the condition. During treatment, patients should ensure adequate rest, avoid overexertion, maintain regular sleep patterns, avoid staying up late, and pay attention to dietary balance.