Pediatrics

Pediatric Bone Age & Predicted Adult Height (Greulich-Pyle / Bayley-Pinneau)

Evaluates skeletal maturity discrepancy (delayed vs advanced) and calculates mid-parental adult target height.

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Parameters

Pediatric Bone Age & Predicted Adult Height (Greulich-Pyle / Bayley-Pinneau) Result

Formula

Discrepancy = Bone Age - Chronological Age
Mid-Parental Height (Boys) = (Father + Mother + 13 cm) / 2
Mid-Parental Height (Girls) = (Father - 13 cm + Mother) / 2

Clinical Pearls

Distinguishes benign constitutional growth delay from pathological growth hormone deficiency and precocious puberty, preventing unnecessary invasive testing.

Limitations

Greulich-Pyle atlas standards were originally developed in Caucasian populations and must be interpreted in clinical context across diverse ethnicities.