What causes pain in the tendons of the knee and leg?

Under normal circumstances, the knee refers to the knee joint. Pain in the knee joint and the tendons at the back of the knee may be related to physiological or pathological causes, including muscle strain and popliteal cysts. Appropriate treatment methods should be selected based on the underlying cause. A detailed analysis is as follows:

I. Physiological Causes

Sudden intense physical activity or exposure of the knee joint to cold temperatures can easily irritate the knee and ankle joints, resulting in varying degrees of pain. This is a physiological phenomenon that does not require special treatment. It is recommended to keep the knee joint warm and avoid strenuous exercise; symptoms usually gradually improve with proper care.

II. Pathological Causes

1. Muscle Strain

Excessive force during activities such as basketball or football may overstretch the knee joint, leading to tendon pain, swelling, and subcutaneous bleeding. Patients should receive timely medical treatment. Medications such as diclofenac sodium sustained-release tablets, nabumetone capsules, and etoricoxib tablets can effectively relieve pain and reduce swelling.

2. Popliteal Cyst (Baker's Cyst)

This occurs when deep bursae in the popliteal area enlarge or the synovial sac protrudes backward, forming a soft tissue mass. As a result, lumps develop around the knee or ankle joints, causing local swelling and pain. Treatment may include medications prescribed by a doctor, such as lornoxicam tablets, meloxicam tablets, or Gujin Wan capsules. Surgical removal of the cyst may be necessary in some cases.

Besides the above, conditions such as fasciitis, synovitis, or degenerative osteoarthritis may also be responsible. Once symptoms occur, it is important to consult a physician promptly, undergo comprehensive examinations, identify the exact cause, and initiate appropriate treatment.