Parents often search growth hormone therapy until growth plates close to understand how long treatment typically continues. The duration of therapy is closely tied to bone maturity — not just age. Children grow taller only while their growth plates remain open, so treatment usually continues until those plates are nearly closed.
At HGH for Children, growth plate status is regularly evaluated to guide timing and ensure care remains appropriate.
What Are Growth Plates?
Growth plates are areas of developing cartilage located near the ends of long bones. These plates allow bones to lengthen as a child grows.
Over time:
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Growth plates gradually narrow
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Puberty accelerates their maturation
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Once they fully close, height growth stops
No treatment can increase height after growth plates have fused.
How Long Does Therapy Usually Last?
Most children who begin therapy continue for several years, often:
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Throughout late childhood
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Through early and mid-puberty
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Until bone maturity indicates growth is nearly complete
The exact timeline varies based on when treatment begins and how much growth potential remains.
How Do Doctors Know When to Stop?
Treatment duration is guided by:
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Height velocity (yearly growth rate)
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Puberty stage
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Bone age assessments
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Overall growth trend
When growth slows significantly and bone maturity shows minimal remaining growth potential, therapy may be discontinued.
Why Not Stop Too Early?
Stopping treatment while growth plates are still open may reduce total adult height potential. Continued monitoring ensures therapy lasts long enough to maximize remaining growth time — but not longer than necessary.
What Happens When Growth Plates Close?
Once growth plates fully close:
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Height growth stops
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Further therapy will not increase stature
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Care may transition depending on individual needs
This is a normal part of development.
The Takeaway
Growth hormone therapy until growth plates close is common because height gain is only possible while growth plates remain open. Treatment duration is individualized and guided by bone maturity, growth rate, and development stage to ensure balanced and appropriate care.
Learn more about pediatric growth monitoring at www.hghforchildren.com
Dr. Devin Stone
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