Learning Radiology xray montage

Growth Arrest Lines
Growth Recovery Lines, Harris Lines, Park Lines

General Considerations

  • Dense metaphyseal, trabecular lines
  • Seen in children but persist into adulthood
  • First thought to represent periods of nutritional deprivation or infectious pathogens during the time of bone growth
    • May occur after prolonged immobilization or generalized illness
  • During these periods, bone growth is presumed to slow down
  • The lines do not become visible until after normal growth resumes
  • Subsequent investigation does not confirm a definitive relationship between their occurrence and episodes of deprivation but of periods of rapid growth

Clinical Findings

  • Prolonged previous illness or infectious disease

Imaging Findings

  • Symmetrical, thin white lines
  • Perpendicular to long axis of bone
  • Metaphyseal at first
  • Most marked in rapidly growing ends of bones, e.g. distal femur and proximal tibia
  • They migrate towards the diaphysis with further growth and may disappear

Growth arrest lines

Growth Arrest/Recovery Lines.
Transverse dense lines (black arrows) perpendicular to the long axis of the bone in the metaphysis and migrate towards the diaphysis with growth may indicate a previous prolonged illness or debilitating state.

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Cambridge Encyclopedia of Human Growth and Development. Ulijaszek S, Johnston F and Preece P. Cambridge University Press, 1998