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Heterotopic ossification.

Dia Shehab1, Abdelhamid H Elgazzar, B David Collier

  • 1Department of Medicine, Faculty of Medicine, Kuwait University, Safat, Kuwait.

Journal of Nuclear Medicine : Official Publication, Society of Nuclear Medicine
|March 9, 2002
PubMed
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Heterotopic ossification (HO) involves bone growth in soft tissues, often after injury or surgery. Early diagnosis and appropriate treatment, including imaging and medication, are crucial to manage this condition and prevent recurrence.

Area of Science:

  • Orthopedics
  • Medical Imaging
  • Pharmacology

Background:

  • Heterotopic ossification (HO) is the abnormal formation of bone in soft tissues.
  • Acquired HO commonly follows musculoskeletal trauma, spinal cord injury, or central nervous system injury, posing diagnostic challenges due to symptoms mimicking other conditions.
  • Patients undergoing total hip arthroplasty or those with paraplegia are at increased risk.

Purpose of the Study:

  • To discuss the diagnostic challenges and management strategies for heterotopic ossification.
  • To highlight the role of imaging in diagnosing HO and differentiating it from other conditions.
  • To outline treatment options and the importance of timing surgical intervention.

Main Methods:

  • Review of clinical presentation and diagnostic modalities for HO.

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  • Discussion of pharmacological treatments (NSAIDs, diphosphonates) and radiation therapy for HO.
  • Emphasis on the use of bone scanning for diagnosis and serial quantitative bone scans for timing surgical intervention.

    • Main Results:

    • Early HO symptoms like fever, swelling, and erythema can be mistaken for cellulitis, osteomyelitis, or thrombophlebitis.
    • Bone scanning is valuable for confirming HO diagnosis and distinguishing it from other conditions.
    • Surgical resection of HO is effective for joint mobility but carries a risk of recurrence if performed before the lesion matures.

    Conclusions:

    • Accurate diagnosis of HO is essential, often requiring advanced imaging techniques.
    • Treatment options include medication, radiation, and surgery, with careful consideration of the lesion's maturity.
    • Serial bone scans aid in optimizing the timing of surgical intervention to minimize recurrence and complications.