Osgood-Schlatter Disease

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Clinically Relevant Anatomy

     The patellar tendon attaches to the tibial tuberosity inferior to the patella.  Stress at this musculo-tendonous junction can cause pain and swelling.

Mechanism of Injury / Pathological Process

     Increased stress of the musculotendenous junction of the patellar tendon and tibial tuberosity can cause the tendon to pull away from the bone a little bit.  This small amount of tearing leads to increased pain and swelling below the knee cap.  The condition is worsened with activities that subject the patellar tendon to high loads such as squatting, or jumping. 
     In some cases ossification will occur at the area of trauma leading to a bony protuberance at the tibial tuberosity.

Clinical Presentation

• Painful palpaton of the tibial tuberosity.
• Pain at the tibial tubeosity that worsens with physical activity or sport.
• Increased pain at the tibial tuberosity with squating, stairs or jumping.
• In some cases increased bony protuberance at the tibial tuberosity.

Diagnostic Procedures

     A diagnosis can be made through a thorough history and examination.  Tenderness to palpation over the tibial tuberosity that worsens with weight bearing squat or jumping is fairly indicitive ot this disease. 
     X-Rays may be utilized to better visualize the musculotendenous junction in severe cases or if avulsion is suspected.

Outcome Measures

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Management / Interventions

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Differential Diagnosis

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Key Evidence

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