What is the reason for leg joint pain when waking up early?

People who suffer from joint pain must go to the hospital for a comprehensive examination, because various causes may cause pain, so we need to understand the cause before we can treat it accordingly. We need to deal with ligament injuries, cartilage injuries, or joint synovitis, etc., which may be the cause.

1. Ligament injury

Injury of periarticular ligaments: The stability of the knee ligaments is relatively poor when the knee joint is slightly flexed. If it is suddenly subjected to external force causing eversion or inversion at this time, it may cause injury to the medial or lateral collateral ligament. The patient will have a clear history of trauma, knee pain, swelling, bruising, and limited motion.

2. Cartilage damage

It is mainly a meniscus injury of the knee joint. When the knee joint is slightly flexed, if the knee is suddenly excessively internally rotated or externally extended, it may cause a meniscus tear. Meniscus injury will cause an obvious tearing feeling in the knee, followed by joint pain, limited movement, limping when walking, and popping when the joint moves.

3. Synovitis

When the synovial membrane of the joint is damaged due to trauma or excessive strain, a large amount of fluid will accumulate, increasing the pressure within the joint, leading to joint pain, swelling, tenderness, and frictional and astringent sounds. For example, when the knee joint is actively and extremely extended, especially when the knee extension exercise is performed with a certain resistance, the pain below the patella will be aggravated. The pain is also significantly aggravated during extreme passive flexion.

4. Autoimmune system diseases

Immune system diseases such as lupus and psoriasis can also affect the joints and cause swelling and pain.