Harris lines

Harris lines or growth arrest lines are horizontal lines that appear on long bones visible on radiographs. They are named after the British anthropologist Henry Albert Harris who first described them in 1913.

Overview

Harris lines are indicators of physiological stress or disease that have interrupted normal bone growth. These lines are most commonly found in the tibia and the lower end of the femur, but can also be seen in the upper end of the humerus or radius. They are more common in males than in females.

Causes

Harris lines are caused by a temporary cessation of bone growth, often due to severe illness, malnutrition, or trauma. The body prioritizes survival over growth during these stressful periods, leading to the formation of these lines. Once the stressor is removed and growth resumes, new bone is laid down more rapidly, creating a dense line visible on X-rays.

Clinical significance

Harris lines can be used as an indicator of past health and nutritional status, particularly in archaeological and forensic contexts. They can provide valuable information about the health and lifestyle of past populations. However, they are not used in modern clinical practice as they do not provide any information about current health status.

See also

• Bone growth
• Radiograph
• Henry Albert Harris
• Malnutrition
• Trauma

References

Harris lines Resources
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