Final answer:
Osgood-Schlatter disease is a common cause of knee pain in adolescents and young adults. It is differentiated from acute avulsion fracture by the location of the pain and the mechanism of injury.
Step-by-step explanation:
Osgood-Schlatter disease is a condition that causes knee pain in adolescents and young adults. It is more common in females and often occurs as a result of excessive running, jumping, or other activities that involve a lot of knee bending. The pain is felt around the front of the knee and deep to the patella, and it can be worsened by activities such as walking, running, going up or down stairs, kneeling, or squatting.
Osgood-Schlatter disease is differentiated from acute avulsion fracture by the location of the pain and the mechanism of injury. In Osgood-Schlatter disease, the pain is felt around the front of the knee, whereas an avulsion fracture typically causes pain on the side of the knee or at the attachment of a tendon. Additionally, Osgood-Schlatter disease is an overuse injury that develops gradually, whereas an avulsion fracture is usually caused by a sudden forceful contraction of a muscle or tendon.