What causes knee soreness, weakness, and fatigue in summer, and what should be done about it?

Weakness and soreness in the knees during summer may be caused by physiological factors or pathological conditions such as rheumatoid arthritis, chondromalacia patellae, etc. A clear diagnosis should be made at a hospital, and symptoms can be relieved through general treatments or medications. Specific analysis is as follows:

I. Physiological Factors

This may result from prolonged standing, walking, or intense physical activity during summer, leading to fatigue of soft tissues around the knee joint, thereby causing weakness and soreness. Patients should rest adequately, reduce physical activity, and may apply heat therapy. No special treatment is required, and symptoms usually improve gradually.

II. Pathological Factors

1. Rheumatoid Arthritis

Excessive exposure to cold in summer—such as frequent cold showers, prolonged use of electric fans, or air conditioning—may trigger flare-ups due to inflammatory stimulation, resulting in symptoms like knee weakness, soreness, and pain. Medications such as Fengshi Guanjie Pian (rheumatism joint tablets), diclofenac sodium sustained-release tablets, or ibuprofen tablets may be taken as directed by a physician.

2. Chondromalacia Patellae

This condition primarily involves degeneration of the articular cartilage on the patella, leading to cartilage wear, inflammatory edema, and pain, which in turn causes knee soreness and weakness. Treatment may include medications such as ibuprofen tablets, aspirin capsules, or glucosamine hydrochloride capsules, taken under medical guidance.

In addition, other conditions such as meniscus injury, degenerative osteoarthritis, or knee synovitis may also cause similar symptoms. Patients are advised to seek timely medical evaluation to determine the underlying cause and receive appropriate treatment.