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Living with Osteogenesis imperfecta type III

A progressively deforming form of osteogenesis imperfecta, often found soon after birth because of fractures.

Understanding Osteogenesis imperfecta type III

Osteogenesis imperfecta type III is a form of osteogenesis imperfecta with severe bone fragility, often diagnosed shortly after birth.

Fractures in the newborn period, even from handling, are common. Other symptoms vary a lot and may include bone malformations, short stature, dental problems, a large head, hearing loss, and blue whites of the eyes. GARD lists newborn and infant years as the usual onset.

Signs & symptoms

Symptoms vary from person to person. GARD lists these among the most common:

  • Multiple fractures present at birth
  • Repeated fractures
  • Bowed limbs
  • Tooth differences (dentinogenesis imperfecta)
  • Hearing impairment
  • Hunched back (kyphosis)

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include bone and joint specialists, eye disease specialists, genetic specialists and gum, teeth and mouth specialists.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

  4. Connect with expert centers

    Osteogenesis Imperfecta Foundation and Children's Brittle Bone Foundation may keep lists of experts for this condition.

Care & treatment

Care team
Bone and joint specialists (orthopedists or orthopedic surgeons); Eye disease specialists (ophthalmologists); Genetic specialists (geneticists); Gum, teeth and mouth specialists (odontologists)
Expert care
Expert lists: Osteogenesis Imperfecta Foundation, Children's Brittle Bone Foundation
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with Osteogenesis Imperfecta Foundation and other patient organizations
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
What is the safest way to handle and care for my child to avoid fractures?
Which treatments can help strengthen bones?
Would COL1A1 or COL1A2 genetic testing help our family?

Quick facts

Symptoms usually startNewborn and as an Infant
InheritanceAutosomal Dominant, Autosomal Recessive, X-Linked

Changes in the COL1A1 or COL1A2 genes cause this condition. GARD lists autosomal dominant inheritance among the patterns.

Genetic

Also known as: oi type 3; oi type iii; oi3; osteogenesis imperfecta type 3; osteogenesis imperfecta, progressively deforming with normal sclerae; progressive deforming osteogenesis imperfecta

Patient organizations

Source: NIH GARD · Osteogenesis imperfecta type IIIGARD ID 8695 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Osteogenesis imperfecta type III.

Explore the Osteogenesis imperfecta type III blog

Explore research for Osteogenesis imperfecta type III

Explore actively recruiting Osteogenesis imperfecta type III studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Osteogenesis imperfecta type III with HealthSpark. Share your city to explore research near you.

  • Recruiting studies from ClinicalTrials.gov
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  • Eligibility is confirmed by the study team

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Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.

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