Typical signs are swelling, stiffness, or pain during any movement. To get rid of this, apply ice, put the leg up, and take over-the-counter painkillers if needed. It is essential to include strengthening exercises and weight management for health benefits. But, if the symptoms persist or become worse, you should consult an orthopedist for a comprehensive evaluation and individualized advice.

 This might be due to cartilage problem. Please get an MRI done !

The redness, bleeding, and pus are signs that your wounds might be infected. It's important to keep the wounds clean and dry. Use Betadine for dressing, as it helps prevent infection. Avoid putting too much pressure on your leg wounds to reduce bleeding. Your wounds will heal with time. 

Unlike lumps that result from injury, there are cancerous lumps that will go away without treatment. If the tumor is not sore and only hurts when pressed, it could be a benign growth. However, you should seek medical attention for this.