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Tibial osteonecrosis.

J H Lonner1, P A Lotke

  • 1Pennsylvania Orthopaedic Institute, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania, USA.

Instructional Course Lectures
|May 25, 2001
PubMed
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Spontaneous osteonecrosis of the tibial plateau, often seen in elderly women, presents as sudden knee pain. Early diagnosis via imaging like MRI is crucial for appropriate management and avoiding unnecessary surgery.

Area of Science:

  • Orthopedics
  • Radiology
  • Rheumatology

Background:

  • Spontaneous osteonecrosis of the tibial plateau is a condition affecting the subchondral bone.
  • It is frequently associated with early to mid-stage osteoarthritis of the knee.
  • The typical patient is an elderly female presenting with acute medial knee pain.

Purpose of the Study:

  • To highlight the diagnostic challenges of spontaneous osteonecrosis of the tibial plateau.
  • To emphasize the role of imaging modalities in diagnosis.
  • To guide appropriate clinical management and surgical considerations.

Main Methods:

  • Review of clinical presentation and diagnostic imaging findings.
  • Correlation of imaging results (radiography, radionuclide scans, MRI) with clinical suspicion.

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  • Assessment of treatment outcomes including conservative management and surgical intervention.

    • Main Results:

    • Diagnosis can be challenging, often requiring a high index of suspicion.
    • Initial radiographs may appear normal or show mild arthrosis.
    • MRI, particularly T2-weighted and fat suppression sequences, is valuable for diagnosis and staging, though early T1-weighted images may be normal.
    • Conservative management with protected weight-bearing can lead to symptom resolution in many cases within a year.

    Conclusions:

    • Spontaneous osteonecrosis of the tibial plateau is an under-recognized cause of knee pain.
    • Prompt and accurate diagnosis using imaging is essential to guide treatment and avoid inappropriate surgery.
    • While conservative treatment is often effective, surgical intervention may be required for advanced or progressive cases.