2010年6月24日 星期四

Heterotopic Ossification Risk Factors

Risk Factors for Formation of Heterotopic Ossification

Patient factors

  • Previous heterotopic ossification
  • Hypertrophic osteoarthritis
  • Male gender
  • Ankylosing spondylitis
  • Diffuse idiopathic skeletal hyperostosis (DISH)
  • Previous trauma to the hip


Technique factors

  • Surgical approach
  • Surgical trauma to the gluteus medius/minimus
  • Femoral fracture
  • Postoperative hematoma
  • Dislocation
  • Infection


The anterolateral approach is associated with higher incidence of heterotopic ossification thant the posterolateral approach; however, the incidence of clinically significant heterotopic ossification is low with either approach.

The transtrochanteric approach has been associated with a higher incidence of heterotopic ossification.

Other studies demonstrated no significant difference in the rate of heterotopic ossification on the basis of surgical approach.

O'Rourke MR, Aggarwal A, Evans BG: Chapter 77. Late Complications and Management. Adult Hip. 2nd edition. p 1110.

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