Cyst-like defects following fractures in children

Pediatric Radiology
|January 1, 1981
PubMed

Insights

Pediatric greenstick fractures can cause benign, cyst-like bone defects near the fracture site. These resorption cysts, related to periosteal reaction, do not affect fracture healing and often resolve over time.

Area of Science:

  • Pediatric Orthopedics
  • Pediatric Radiology
  • Pediatric Bone Healing

Background:

  • Greenstick fractures are common incomplete fractures in children.
  • These fractures involve the periosteum, leading to a subperiosteal hematoma and periosteal reaction.
  • The study investigates unusual bone defects observed after pediatric greenstick fractures.

Observation:

  • Nine children presented with radiolucent, cyst-like cortical defects.
  • Lesions appeared weeks after greenstick fractures in the undamaged radius, proximal to the fracture line.
  • Defects varied in size (3-7 mm diameter) and shape, often multiple and within the periosteal reaction zone.

Findings:

  • Fracture healing remained unaffected despite the presence of these cyst-like defects.
  • In three patients, the lesions resolved spontaneously within three years.
  • The defects are characterized as benign resorption cysts linked to periosteal reaction and hematoma.

Implications:

  • These findings help differentiate benign post-fracture bone changes from more serious conditions in children.
  • Understanding these resorption cysts can reduce unnecessary patient anxiety and diagnostic procedures.
  • Radiologists and orthopedic surgeons should be aware of these transient lesions following pediatric greenstick fractures.

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