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Related Experiment Videos

Growth-plate modifications after drilling

G L Garcés1, I Mugica-Garay, N López-González Coviella

  • 1Department of Clinical Sciences, University of Las Palmas de Gran Canaria, Spain.

Journal of Pediatric Orthopedics
|March 1, 1994
PubMed
Summary
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Drilling the growth plate in rat femurs created a bone bridge, potentially causing permanent growth arrest (epiphysiodesis). Caution is advised when pinning fractures near growth plates.

Area of Science:

  • Orthopedic surgery
  • Pediatric orthopedics
  • Skeletal development

Background:

  • Growth plate injuries can lead to limb length discrepancies and deformities.
  • Surgical interventions near the growth plate require careful consideration to avoid complications.

Purpose of the Study:

  • To investigate the histological and histomorphometrical changes in the growth plate after a drill hole injury.
  • To evaluate the potential for bone bridge formation and its impact on growth.

Main Methods:

  • A 1-mm drill hole was created in the distal femur of 30 male rats, crossing the growth plate.
  • Control femora underwent sham surgery.
  • Animals were euthanized at 1, 2, 8, and 16 weeks post-procedure for analysis.
  • Histological, histomorphometrical, and histochemical analyses of the growth plates were performed.

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Main Results:

  • No significant differences in bone length or growth plate height were observed between drilled and control femora.
  • Drill holes progressively filled with bony trabeculae originating from the metaphyses and adjacent cartilage.
  • A bone bridge formed and widened over time, indicating progressive healing of the defect.

Conclusions:

  • Surgical intervention through the growth plate can lead to the formation of a bone bridge.
  • This bone bridge has the potential to cause permanent growth arrest (epiphysiodesis).
  • Findings underscore the need for caution during fracture fixation procedures involving the growth plate.