Physical Therapy Assistant Practice Exam

Which disease is caused by repetitive traction on the tibial tuberosity apophysis?

1. Patellofemoral syndrome

2. Congenital hip dysplasia

3. Legg-Calve-Perthes disease

4. Osgood-Schlatter disease

The correct answer is: Osgood-Schlatter disease

The condition characterized by repetitive traction on the tibial tuberosity apophysis is Osgood-Schlatter disease. This is commonly seen in adolescents who are active in sports that involve running, jumping, or quick changes of direction. The repetitive stress from these activities can lead to inflammation and tenderness at the tibial tuberosity, where the patellar tendon attaches to the shinbone. In this condition, the growth plate at the tibial tuberosity becomes irritated due to the pulling forces exerted by the strong muscles of the quadriceps and the associated tendon. As a result, localized pain, swelling, and an increase in bony prominence at the site may occur. The nature of Osgood-Schlatter disease is such that it is typically self-limiting and often resolves with rest and proper management, making it a common consideration in young athletes experiencing knee pain.