What is bone age?
A bone age X‑ray evaluates the maturity of bones, typically using the left hand and wrist. By comparing growth plates to references, clinicians estimate whether skeletal development matches a child’s chronological age.
Why it matters
Bone age helps explain growth patterns. A delayed bone age may suggest that a child still has room to grow and could experience a later growth spurt, common in constitutional delay. An advanced bone age can indicate earlier maturation, which may affect final height. For some conditions, bone age refines diagnosis and treatment decisions.
How results are used
Bone age is interpreted alongside height, weight, growth velocity, family heights, and puberty stage. It is not a stand‑alone diagnosis but a useful piece of the growth puzzle. Results can help estimate adult height ranges and inform whether additional testing is needed.
What to expect during the X‑ray
The study is quick and uses a low dose of radiation. The child places a hand on the imaging plate while a single image is taken. Your clinician then compares the image to standardized atlases or software to assign a bone age.
Internal link idea: Short Stature Guide • Puberty Timing • Book a Growth Evaluation.
Quick FAQs
Does bone age predict exact adult height? No. It provides an estimate within a range and should be combined with other data.
Can bone age change? Yes. Repeat studies over time show maturation, especially around puberty.
