Pain in the back of the knee, behind the thigh
The knee refers to the knee joint. Pain in the popliteal fossa—the area behind the knee—may be related to physiological causes such as excessive physical activity, or result from pathological conditions such as Baker's cyst or degenerative osteoarthritis. Appropriate treatment should be determined after consulting a doctor. Specific analyses are as follows:
1. Physiological Causes
Prolonged standing or intense physical exercise can easily injure local muscles and tendons in the thigh and increase leg strain, leading to symptoms such as leg pain and swelling. Usually, no special treatment is required; however, it is important to control exercise intensity and avoid strenuous activities. Heat application may be used when necessary.
2. Pathological Causes
1) Baker's Cyst (Popliteal Cyst)
If a mobile cystic lesion develops in the posterior aspect of the knee joint, it may cause enlargement of the deep bursa in the popliteal fossa and protrude into the synovial sac, forming a soft tissue mass. This leads to symptoms such as joint pain and swelling. After diagnosis, patients should consult a doctor about using medications such as minocycline hydrochloride capsules, diclofenac sodium enteric-coated tablets, and Guizhi Fuling capsules to relieve pain and discomfort.
2) Degenerative Osteoarthritis
Inflammation in the knee joint, with continuous inflammatory stimulation, can cause joint pain. In severe cases, the pain may radiate to the back of the knee (popliteal fossa), resulting in symptoms such as joint pain, swelling, and stiffness. Bed rest is recommended. For severe cases, a doctor may prescribe medications such as diacerein capsules, chondroitin sulfate tablets, and glucosamine hydrochloride capsules, which help relieve pain and slow down cartilage degeneration.
Besides the above, other possible causes include rheumatoid arthritis, meniscus injury, and avascular necrosis of the femoral head. It is advisable to seek timely evaluation at an orthopedic department of a hospital and schedule regular follow-up visits during recovery.
