Case 68. Osgood Schlatter's Condition

Description: * Etiology thought to be traction apophysitis secondary to repetitive microtrauma with partial avulsion, inflammation and new bone formation at the ligament insertion.
* Must differentiate from malignancy, infection, fracture, tendonitis and Sindling-Larsen- Johansson Disease.
* Should be referred to a "condition" not a "disease."
* Affects children between 10 and 14 years old, more commonly males 3:1, and is present bilaterally in 25 - 50% of cases.
* Diagnosis is based on clinical signs and symptoms. These include pain, heat, tenderness and local swelling with prominence at the tibial tuberosity.
* Ossification of the tibial tubercle begins distally between 7-9 years of age and progresses proximally.