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Patellar angle in Osgood-Schlatter disease
R K Sen1, L R Sharma, S R Thakur
1Department of Orthopedics, Indira Gandhi Medical College, Shimia, India.
Acta Orthopaedica Scandinavica
|February 1, 1989
Summary
A novel patellar angle measurement reveals a smaller angle in knees with Osgood-Schlatter disease compared to controls. This finding suggests a potential role in the condition
Area of Science:
- Orthopedics
- Radiology
- Pediatric Sports Medicine
Background:
- Osgood-Schlatter disease is a common cause of knee pain in adolescents.
- Its exact pathogenesis, particularly the role of patellar biomechanics, requires further elucidation.
Purpose of the Study:
- To introduce and validate a new angular measurement of the patella on lateral knee radiographs.
- To investigate if this patellar angle differs between individuals with Osgood-Schlatter disease and healthy controls.
Main Methods:
- A novel patellar angle was defined using two lines on lateral knee radiographs.
- Measurements were taken in patients with Osgood-Schlatter disease and age-matched control groups.
- Statistical analysis compared the mean angles between groups.
Main Results:
- The average patellar angle was significantly smaller in knees with Osgood-Schlatter disease (33 degrees) compared to age-matched controls (47 degrees) and adult controls.
- This smaller angle was observed in 68 affected knees versus 71 age-matched and 198 adult controls.
Conclusions:
- A smaller patellar angle may be a significant factor in the development of Osgood-Schlatter disease.
- This new radiographic measurement could aid in understanding the condition's pathogenesis.