Concussion is a common sports-related injury that occurs as a result of a blow to the head or body, causing the brain to move within the skull. Symptoms of concussion can range from mild to severe and may include headache, dizziness, confusion, nausea, and memory problems.

Patellar tendinopathy, also known as jumper's knee, is a condition characterized by pain in the patellar tendon, which connects the kneecap (patella) to the shinbone (tibia). It is commonly seen in athletes who participate in sports that involve jumping, such as basketball and volleyball.