Swelling and pain after knee injury

Swelling and pain after knee injury and difficulty walking are caused by damage to the tip of the toe, so symptoms such as dull pain will persist. In daily life, especially when the knees need to bend significantly, such as going up and down stairs, squatting, and walking with weight, pain will occur in the knees. You can use cold compresses to control bleeding and reduce swelling in your knee. If severe pain persists after applying cold compress, seek medical attention immediately.

Differential diagnosis of knee trauma swelling and pain:

1. Swelling and pain behind the knee, limited movement: Clinically, posterior knee cysts are more common in middle-aged people and have the highest incidence rate, with more men than women. They lead to mechanical limitation of knee extension and flexion, mild pain, and obvious feeling of tension and swelling. The patient's main complaint is often characterized by gradual swelling in the fossa area, accompanied by pain behind the knee. Occasionally, cysts can compress and obstruct venous return, causing calf edema. When the cyst grows to a certain size, the flexion and extension of the knee joint will be limited.

2. Anterior knee pain: Patellar anterior knee pain syndrome is a professional term to describe pain occurring in the front of the patella or around the patellar tendon. Patellofemoral Pain Syndrome, also known as anterior knee pain, is caused by abnormal movement of the femur when the knee joint is flexed.

3. Knee bruise: Knee bruise is a type of soft tissue injury. Soft tissue injury refers to pathological damage to the skin, subcutaneous superficial and deep fascia, muscles, tendons, tendon sheaths, ligaments, joint capsules, synovial capsules, intervertebral discs, peripheral nerves and blood vessels caused by various acute traumas or chronic strains as well as one's own disease pathology. It is called soft tissue injury.

There were no fractures, dislocations, or skin or flesh damage. The main clinical manifestations are pain and swelling at the injured site and limited joint movement, which often occur in the waist, ankle, knee, shoulder, wrist, elbow, hip and other parts.

The size, shape, bleeding, degree and range of the wound, whether there are ecchymoses or blisters on the skin, whether there is any change in skin temperature, the circulation condition of the finger (toe) tips, whether there is ischemic necrosis of the muscles, whether the injured limb is swollen, whether the skin is tense and hardened, whether it can move, and whether there is any sensory impairment.

1. Inquire in detail about the time, cause and condition of the injury, whether it is a crush injury, whether there is urinary retention, oliguria and hematuria after the injury; what kind of treatment has been received and how effective it was.

2. Pay attention to whether there is shock or injury to other parts of the body, and whether there is crush syndrome (acute renal failure characterized by swelling of limbs or trunk, myoglobinuria and hyperkalemia).

3. Check the injured area in detail, paying attention to the size, shape, bleeding, degree and range of the wound, whether there are ecchymosis or blisters on the skin, whether there is any change in skin temperature, the circulation of the finger (toe) tips, whether there is ischemic necrosis of the muscles, whether the injured limb is swollen, the skin is tense and hardened, whether it can move, and whether there is any sensory impairment.

4. Patients with severe trauma (including crush injuries) or severe systemic symptoms should have their blood and urine checked daily, and the urine volume recorded. If necessary, blood and urine biochemical tests (including myoglobin), electrocardiograms, and renal function tests should be performed.

Mitigation methods

In the early stage, that is, within 8 hours after 24 hours after injury, cold compress is very important, which can control bleeding and exudation, and relieve symptoms such as swelling and pain. In the middle and late stages, physical therapy, massage, and blood-activating drug treatment can be used, combined with functional exercise to promote the absorption of congestion and exudation, and tissue repair.