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Living with Spondyloepiphyseal dysplasia, Reardon type

An extremely rare bone condition with short stature, spine and thigh bone changes, and an unstable neck.

Understanding Spondyloepiphyseal dysplasia, Reardon type

Spondyloepiphyseal dysplasia, Reardon type is an extremely rare bone condition with short stature and an unstable neck.

People have short stature and differences in the spine bones and thigh bones. The neck bones can be unstable (cervical instability). Differences in a small bone in the neck, the odontoid process, can lead to nerve and spinal cord symptoms. Signs may begin in the newborn or infant years.

Signs & symptoms

GARD doesn't list specific symptoms for this condition yet. The summary describes:

  • Short stature
  • Spine bone differences
  • Thigh bone differences
  • Unstable neck bones (cervical instability)
  • Nerve symptoms linked to the neck bone

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. Ask which tests can help

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

  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?
Which nerve symptoms should I report right away?
Is genetic testing available for our family?

Quick facts

Symptoms usually startNewborn and as an Infant
InheritanceAutosomal Dominant

Changes in genes (variants) cause this condition. It is autosomal dominant, meaning one changed copy of a gene can cause it. GARD doesn't list which gene.

Genetic

Also known as: spondyloepiphyseal dysplasia with atlantoaxial instability

Patient organizations

Source: NIH GARD · Spondyloepiphyseal dysplasia, Reardon typeGARD ID 16994 · 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, Reardon type.

Explore the Spondyloepiphyseal dysplasia, Reardon type blog

Explore research for Spondyloepiphyseal dysplasia, Reardon type

Explore actively recruiting Spondyloepiphyseal dysplasia, Reardon type studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Spondyloepiphyseal dysplasia, Reardon type with HealthSpark. Share your city to explore research near you.

  • Recruiting studies from ClinicalTrials.gov
  • Share your city to look for research near you
  • 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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