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Related Experiment Videos

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
PubMed
Summary
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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.

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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.