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Assessing Knee Stability in Adolescent Athletes with Osgood-Schlatter Disease Using the Y-Balance Test
V Hladky1, A Kaplan2, J Smetanova3
1Department of Orthopaedics and Traumatology, 2nd Faculty of Medicine, Charles University and Motol University Hospital, Prague, Czech Republic.
Summary
Athletes with Osgood-Schlatter disease show poorer performance on the Y-Balance Test, particularly in posteromedial and posterolateral directions. This indicates impaired knee stability in young athletes experiencing patellar tendon overload.
Area of Science:
- Orthopedics
- Sports Medicine
- Biomechanics
Background:
- Osgood-Schlatter disease is a common overuse injury in adolescents, linked to chronic patellar tendon overloading.
- Impaired knee stability may contribute to the development or exacerbation of Osgood-Schlatter disease.
Purpose of the Study:
- To investigate if athletes with Osgood-Schlatter disease exhibit diminished performance on the Y-Balance Test compared to healthy controls.
- To assess differences in complex knee stability between affected and healthy adolescent athletes.
Main Methods:
- The study included 10 adolescent boys diagnosed with Osgood-Schlatter disease and 10 healthy adolescent football players as a control group.
- Knee stability was evaluated using the Y-Balance Test, with data analyzed using established methodologies.
- Performance was measured in normalized values for lower extremities across different directions.
Main Results:
- Significant performance deficits were observed in the posteromedial and posterolateral directions of the Y-Balance Test for the Osgood-Schlatter disease group.
- These findings suggest specific patterns of impaired balance and stability in affected individuals.
Conclusions:
- The Y-Balance Test can identify reduced performance in specific directions among patients with Osgood-Schlatter disease.
- This highlights the potential role of balance deficits in the pathophysiology of Osgood-Schlatter disease and suggests implications for rehabilitation.

