What's wrong with the stabbing pain in the knee

The knee is an important connection in our legs. Problems with the knee may affect our daily normal life. Sometimes we may encounter such situations, such as tingling and intermittent pain in the knee. The main causes of this condition are rheumatism and various inflammations in the knee. When encountering this situation, we should solve it in time. The following is an explanation of the causes of tingling and intermittent pain in the knee. I hope it will be effective for you.

The knee joint has the largest synovial area among all the joints in the body, and its synovial reaction is also the most obvious. Traumatic synovitis of the knee refers to a non-infectious inflammatory reaction of the synovium lining the fibrous capsule of the knee joint caused by trauma. Clinically, it is divided into acute traumatic inflammation and chronic strain inflammation. If the disease is diagnosed, active treatment should be given to prevent knee joint dysfunction.

Causes

Extrinsic factors are mainly in the form of mechanical injuries such as acute injury or chronic strain (including surgical injury), which is an important cause of traumatic synovitis. Acute traumatic synovitis is a disease characterized by bleeding as the main symptom after injury.

Clinical manifestations

This disease is clinically divided into two types: traumatic inflammation and chronic strain inflammation.

1. If it is an acute injury, it will manifest as hematoma of the knee joint. Joint hematoma usually occurs immediately after injury or within 1 to 2 hours thereafter, with extensive ecchymosis on the knees and calves. There is a sense of tension in the skin or swelling when palpated, and the floating patella test is positive. There are often systemic symptoms, such as fever caused by blood stasis and local heat. This disease is often a complication of other injuries. Careful examination should be performed during clinical practice to prevent missed diagnosis.

2. Chronic strain or injury-induced knee synovitis is caused by improper treatment of acute synovitis turning into chronic synovitis. It is clinically more common in the elderly, those with damp constitution, or patients with genu valgum, genu valgum or other knee deformities, or those with knee bone hyperplasia. The main complaints of patients are heaviness and discomfort in both legs and difficulty in flexing and extending the knees, but there are no obvious obstacles to passive movements, the pain is not severe, the local area is not red or hot, and knee joint function examinations generally show no obvious positive signs. A common phenomenon is that the knee pits on both sides of the patellar ligament are bulging and full. When palpated, the area is soft and even cystic. If the joint effusion exceeds 10 ml, the floating patellar test will be positive.

treat

1. Correctly handle the relationship between rest and activity. Active and passive activities should be suspended until the effusion subsides. In severe cases, appropriate braking should be applied. Premature activity can lead to chronic synovitis. During the rest and immobilization phase, you should start actively exercising the quadriceps (isometric contraction). After the effusion subsides, start knee joint activities and walking. Emphasis on quadriceps exercises is key in treatment.

2. Excessive fluid accumulation in the joints can increase the pressure in the joint cavity, stimulate nerve endings, increase pain, and cause reflex muscle spasms. In the late stage, adhesions form in the joints, leading to functional impairment, so puncture and fluid extraction should be performed. When the effusion is small, puncture is not necessary.

3. Local physical therapy, hot compress, and use of Chinese herbal medicine to reduce swelling and remove blood stasis can be performed. Knee joint trauma can often cause intra-articular hematoma, which is mostly caused by intra-articular fractures, or soft tissues such as ligaments and synovium, surgery, etc. There are other causes such as scurvy, hemophilia, villonodular synovitis, etc., collectively referred to as spontaneous intra-articular hematoma. Intra-articular hematoma of the knee rarely coagulates and mostly remains in a fluid state due to the action of fibrinase. The red blood cells in the accumulated blood overflow into the gaps between synovial cells and remain there and in the subsynovial tissue. Others are phagocytosed and broken down by synovial cells and transformed into multi-center or mono-center snail-shaped membrane bodies and siderogenic bodies. If the accumulated blood remaining in the joint is not absorbed, the deposition of hemosiderin will lead to peri-articular fibrosis. Its clinical characteristics are rapid swelling within a short period of time after knee trauma, which can cause mild local pain due to the rapid increase in tension within the joint and the stimulation of the synovial membrane by the products of red blood cell destruction. Both body temperature and local temperature will increase. When the diagnosis is uncertain, biopsy should be performed to confirm the diagnosis. Except for hemophilia, obvious intra-articular hematoma caused by any reason should be promptly punctured and aspirated before applying pressure bandage.