I am sorry to hear about your injury, and it sounds like the pain is having a significant impact on your quality of life. In order to provide an accurate diagnosis and treatment options, I would need more information. I would need to review your entire medical history and also perform a thorough physical exam, including a knee exam. Additionally, you may require other studies such as an x-ray or MRI. Only after collecting this information would it be possible to proceed. Therefore, I strongly encourage you to see an orthopedic surgeon
The knee is a complex joint with many structures that can cause pain when injured. You may have simply suffered a deep bruise
that is taking some time to heal. There are many bursa, or fluid filled sacs, in the joint that provide cushioning, and injury to these can cause persistent pain. Some traumatic injuries to lead to fluid accumulation in the joint, which is called an effusion. You may have suffered a small fracture
to one of the bones that comprise the joint. You may also have injured one of the ligaments in the knee, such as the ACL, MCL, or PCL. I encourage you to schedule an appointment with an orthopedic surgeon to discuss your symptoms.