How much bone age delay is considered significant?

Bone age delay of 2 or more years from chronological age suggests pathologic cause and warrants investigation including thyroid function, IGF-1, IGFBP-3, and GH stimulation testing. Delay of 1–2 years with short stature, family history, and normal growth velocity suggests constitutional growth delay.

Can bone age predict adult height?

Bone age-based adult height prediction using Bayley-Pinneau tables has 70–80% accuracy within a 5 cm range for a single assessment. Serial measurements with growth velocity are more accurate than single-point bone age for height prediction.

Bone Age Greulich-Pyle Delay Significance

Interpret bone age delay from Greulich-Pyle atlas against chronological age to differentiate constitutional growth delay from pathologic causes including hypothyroidism and growth hormone deficiency.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.

How It Works

Interpret bone age delay from Greulich-Pyle atlas against chronological age to differentiate constitutional growth delay from pathologic causes including hypothyroidism and growth hormone deficiency

Each component has a specific meaning:

Greulich-Pyle atlas against chronological age — The greulich-pyle atlas against chronological age recorded for the scenario being assessed.

Note: Interpret the bone age delay result against the thresholds and context described above.

How to Use

Enter the Greulich-Pyle atlas against chronological age for the scenario you are assessing. Interpret bone age delay from Greulich-Pyle atlas against chronological age to differentiate constitutional growth delay from pathologic causes including hypothyroidism and growth hormone deficiency. Use the bone age delay result to inform your calculation.

Related Calculators

Growth Velocity SDS

Medical Long-tail

Catch-Up Growth