Knee pain involves the joints, bones, muscles, ligaments (connect the bones together), or tendons (connect muscle to the bone) in the knee, thigh, and lower leg. Pain results from stress, injury, or disease, such as wear and tear due to aging, overuse, or repetitive motions during sports or physical activity.
In addition to pain, symptoms of knee injury include stiffness, numbness, tingling, swelling, or inability to flex the knee or stand. Hip and foot injuries can also cause knee pain. Common causes of knee pain or injury include:
- Bursitis: painful inflammation in the knee caused by pressure or injury
- Cartilage injuries: damage to the tissue that covers the surface of the bone
- Cysts: sacs filled with air, fluid, or other substances (most are noncancerous, but they can be cancerous)
- Fractures or dislocation: such as patellar (knee cap) injuries
- Knee ligament injuries: such as ACL tears, MCL sprains, or LCL sprains
- Infections: can occur in the bones or joints
- Meniscus tear: damage to the shock-absorbing cartilage in the knee
- Nerve compression, damage, or impingement: compression of the bony or soft tissue structures of the knee
- Osteoarthritis: degenerative wear and tear of the joint
- Patellar tendonitis: inflammation of the tendon in the knee cap
- Rheumatoid arthritis: a chronic (ongoing) inflammatory joint disorder
- Tendonitis: inflammation due to strained or ruptured tendons
- Tumors: abnormal tissue growth or swelling (can be cancerous or noncancerous)
Why Choose UHealth?
World-class care in an academic health center. As a research and teaching institution, we treat children and adults with proven, leading-edge procedures based on clinical studies performed at the Miller School of Medicine. Our doctors, residents, nurses, and therapists work together to create healthy outcomes.