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Sinding-Larsen-Johansson Disease

Aka: Sinding-Larsen-Johansson Disease, Sinding-Larsen-Johansson
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  1. See Also
    1. Osteochondrosis
  2. Pathophysiology
    1. Inflammation at the inferior pole of the Patella
    2. Contrast with Osgood Schlatter which is inflammation at the tibial tubercle
  3. Epidemiology
    1. Ages 10-13 years old
  4. Symptoms
    1. Anterior Knee Pain
    2. Worse with jumping or direct pressure on the inferior Patellar pole
  5. Signs
    1. Point tenderness at the Patella inferior pole
  6. Imaging
    1. Knee XRay
      1. Rule-out Fracture, tumor, or ostemyelitis
      2. May demonstrate partial Patellar avulsion with overlying swelling
  7. Differential Diagnosis
    1. Osgood-Schlatter (affects tibial tubercle)
  8. Management
    1. Relative rest
    2. Analgesics
    3. Flexibility Exercises for the hamstrings, quadriceps, heel cords
    4. Immobilization is rarely needed and only recommended in severe cases
    5. Orthopedic referral if persistent symptoms despite a mature skeleton
  9. Course
    1. Self-limited with resolution within 12 months and by skeletal maturity
  10. References
    1. Atanda (2011) Am Fam Physician 83(3): 285-91
    2. Medlar (1978) J Bone Joint Surg Am 60(8): 1113-6

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