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Living with Spondyloepiphyseal dysplasia congenita

A genetic bone condition with short stature, a short torso, and spine, hip, vision, and hearing problems.

Understanding Spondyloepiphyseal dysplasia congenita

Spondyloepiphyseal dysplasia (SED) congenita is a genetic condition of bone development that causes disproportionate short stature.

The torso, arms, and legs are short, while hands and feet are average size. Adult height ranges from about 3 feet to almost 5 feet. The spine may curve more over childhood, and unstable neck bones can raise the risk of spinal cord damage. Arthritis often starts early, and some people have vision and hearing problems. Signs are often seen at birth.

Signs & symptoms

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

  • Short torso and short stature
  • Curved spine (scoliosis or kyphosis)
  • Flattened spine bones (platyspondyly)
  • Hip pain and hip joint changes
  • Knock knees
  • Early arthritis and less joint movement

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 and genetic specialists.

  3. Consider genetic testing

    Changes in COL2A1 are linked to this condition. Genetic testing and counseling can help confirm a diagnosis and explain what it means for your family.

  4. Connect with expert centers

    Little People of America may keep lists of experts for this condition.

Care & treatment

Care team
Bone and joint specialists (orthopedists or orthopedic surgeons); Genetic specialists (geneticists)
Expert care
Expert lists: Little People of America
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 Little People of America
  • 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
How can we check my neck bones for instability?
How often should we have eye and hearing exams?
Would COL2A1 gene testing help our family?

Quick facts

Symptoms usually startduring Pregnancy and as a Newborn
InheritanceAutosomal Dominant
GenesCOL2A1

Changes in the COL2A1 gene cause this condition. It is autosomal dominant, meaning one changed copy of the gene can cause it.

Genetic

Also known as: congenital spondyloepiphyseal dysplasia; sed - spondyloepiphyseal dysplasia; sed congenita; sedc; sedc - spondyloepiphyseal dysplasia congenita; spondyloepiphyseal dysplasia congenita group

Patient organizations

Source: NIH GARD · Spondyloepiphyseal dysplasia congenitaGARD ID 4987 · 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 Spondyloepiphyseal dysplasia congenita.

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Explore actively recruiting Spondyloepiphyseal dysplasia congenita studies with HealthSpark.

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  • Recruiting studies from ClinicalTrials.gov
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