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Heterotopic ossification after hip and spine surgery in children with cerebral palsy

S D Krum1, F Miller

  • 1Alfred I. duPont Institute, Wilmington, Delaware 19899.

Insights

Heterotopic ossification is common after hip surgery in children with cerebral spasticity but typically mild. Spine fusion surgery rarely causes heterotopic ossification, but it is severe when it occurs.

Area of Science:

  • Orthopedics
  • Pediatric Surgery
  • Rehabilitation Medicine

Background:

  • Cerebral spasticity often requires surgical intervention.
  • Heterotopic ossification (HO) is a potential complication of orthopedic procedures.
  • Understanding HO risk factors in pediatric patients is crucial for surgical planning.

Purpose of the Study:

  • To investigate the incidence and severity of heterotopic ossification (HO) following different surgical procedures in children with cerebral spasticity.
  • To compare the risk of HO after hip adduction lengthening versus spine fusion.
  • To evaluate the impact of concomitant hip and spine surgery on HO development.

Main Methods:

  • Retrospective review of 198 pediatric patients with cerebral spasticity.
  • Analysis of HO development based on surgical procedures: hip adduction lengthening, spine fusion, and combined procedures.
  • Grading of heterotopic ossification severity.

Main Results:

  • 21 of 61 children (34%) undergoing hip adduction lengthening developed mild to moderate HO.
  • 2 of 132 patients (1.5%) after spine fusion developed severe HO, leading to hip fusion.
  • 2 of 5 patients (40%) with concomitant hip and spine surgery developed severe HO.

Conclusions:

  • Heterotopic ossification after hip muscle surgery in children with cerebral spasticity is common but usually minor.
  • Heterotopic ossification following spine fusion is rare but associated with severe outcomes.
  • Concomitant hip and spine surgery presents a high risk for severe heterotopic ossification.

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