Post-Car Accident: Why Is My Knee Developing Blisters? - Surgery

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It sounds like you are experiencing a concerning situation with your knee following your car accident. The development of blisters on your knee, especially after a traumatic injury, can be indicative of several underlying issues that need to be addressed.
Firstly, the blisters you are observing could be a result of a few different factors. One possibility is that they are a manifestation of a condition known as "seroma," which is a collection of fluid that can accumulate in the tissue following an injury. This fluid can create pressure under the skin, leading to blister formation. Another possibility is that the blisters are a result of friction or irritation from the bandaging or from movement, especially if the area is still healing and sensitive.

The deep purple color you mentioned could indicate bruising, which is common after trauma. Bruising occurs when small blood vessels break and leak blood into the surrounding tissue, leading to discoloration. If the bruising is extensive, it may take longer for the body to reabsorb the blood, which can contribute to prolonged swelling and discomfort.

It's also important to consider the possibility of an infection. If the blisters are filled with fluid that is clear or yellowish, it could be a sign of serous fluid, which is less concerning. However, if the fluid is cloudy, has a foul odor, or if you notice increased redness, warmth, or fever, these could be signs of an infection, which would require immediate medical attention.

Given that your injury is over two weeks old and the condition of your knee is worsening, it is crucial to seek medical evaluation as soon as possible. A healthcare professional can perform a thorough examination, possibly including imaging studies, to assess the extent of the injury and determine the best course of action. They may also consider draining the blisters if they are large and painful, or if they are at risk of becoming infected.

In the meantime, here are some general recommendations to help manage your symptoms:
1. Keep the Area Clean: Ensure that the blisters and surrounding skin are kept clean to reduce the risk of infection. Use mild soap and water, and avoid using harsh chemicals or scrubbing the area.

2. Avoid Popping Blisters: While it may be tempting, try not to pop the blisters as this can increase the risk of infection. If a blister does break, cover it with a sterile bandage to protect it.

3. Elevate the Leg: Keeping your leg elevated can help reduce swelling and improve circulation.

4. Cold Compress: Applying a cold compress can help alleviate swelling and discomfort. Just be sure to wrap the ice in a cloth to avoid direct contact with the skin.

5. Pain Management: Over-the-counter pain relievers such as ibuprofen or acetaminophen can help manage pain and inflammation, but consult with your healthcare provider before taking any medication.

6. Follow-Up Care: Make sure to follow up with your healthcare provider to monitor the healing process and address any complications that may arise.

In conclusion, while it is not uncommon to experience complications following a significant injury like yours, it is essential to take any worsening symptoms seriously. Prompt medical evaluation will help ensure that you receive the appropriate treatment and care for your knee. Wishing you a speedy recovery!