[39F] With enlarging bump on left knee cap post-fall

What might be happening

Based on the information you have provided, here are some possible explanations for the bump on your knee:

• Bursitis: This is the inflammation of the bursa, a small fluid-filled sac that acts as a cushion between bones and soft tissues. Bursitis can develop after an injury or due to repetitive stress on the knee. It often presents as a painless or slightly painful bump.

  • Treatment: Rest, ice, compression, and elevation (RICE) can help reduce inflammation. Over-the-counter anti-inflammatory medications may also be helpful. In some cases, a doctor may recommend draining the bursa or injecting corticosteroids.

• Cyst Formation: A cyst, such as a Baker's cyst, can form behind the knee and may become more noticeable over time. These cysts are usually filled with fluid and can be painless.

  • Treatment: Cysts often resolve on their own, but if they cause discomfort or restrict movement, a doctor may drain the fluid or recommend physical therapy.

• Bone Spur or Osteoarthritis: Over time, wear and tear on the knee joint can lead to the formation of bone spurs or osteoarthritis. This can cause a bony bump to develop.

  • Treatment: Managing symptoms with pain relief, physical therapy, and lifestyle changes can help. In severe cases, surgical intervention may be necessary.

• Scar Tissue: After an injury, scar tissue can form and create a noticeable bump. This is usually harmless but can sometimes cause discomfort.

  • Treatment: Physical therapy and massage can help break down scar tissue and improve mobility.

• Tumor (Less Common): Although rare, a tumor can develop in the knee area. It is important to rule out this possibility with a medical evaluation.

  • Treatment: If a tumor is suspected, a doctor will perform imaging studies and possibly a biopsy to determine the appropriate course of action.

What you can do

While it is important to consult a healthcare professional for a formal diagnosis and treatment plan, here are some steps you can take in the meantime:

1. Rest and Protect Your Knee: Avoid activities that put stress on your knee. Use a knee brace or support if necessary.
2. Apply Ice: Ice the bump for 15-20 minutes several times a day to reduce swelling.
3. Elevate Your Leg: Keep your leg elevated when resting to help reduce swelling.
4. Over-the-Counter Pain Relief: If you experience any discomfort, consider taking over-the-counter pain relievers like ibuprofen or acetaminophen.
5. Monitor the Bump: Keep an eye on the size and appearance of the bump. Take note of any changes or new symptoms.
6. Use MDandMe: Journal your symptoms, track your progress, and share your notes with your healthcare provider for a more comprehensive evaluation.

What you should look out for

Seek medical attention if you notice any of the following:

• Rapid increase in the size of the bump
• Redness, warmth, or tenderness around the bump
• Pain that interferes with your daily activities
• Fever or general feeling of being unwell
• Limited range of motion in your knee

Remember, while this advice can help you manage your symptoms, it is important to see a healthcare professional for a proper diagnosis and treatment plan.