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Living with Thoracomelic dysplasia

An extremely rare bone condition with a bell-shaped chest, short stature, and joint differences in the arms.

Understanding Thoracomelic dysplasia

Thoracomelic dysplasia is an extremely rare bone condition with a bell-shaped chest and disproportionately short stature.

Other features include a small pelvis, elbow bones that can slip out of place, and long lower leg bones (fibulae). GARD says the bone differences tend to ease with age. It is noticed in infancy.

Signs & symptoms

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

  • Bell-shaped chest
  • Narrow chest and short ribs
  • Short limbs for body size
  • Elbow dislocation
  • Knock knees (genu valgum)
  • Loose joints (joint hypermobility)

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, genetic specialists and lung and breathing specialists.

  3. Ask which tests can help

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

Care & treatment

Care team
Bone and joint specialists (orthopedists or orthopedic surgeons); Genetic specialists (geneticists); Lung and breathing specialists (pulmonologists)
Expert care
Ask about multidisciplinary care centers for rare conditions
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 rare disease patient organizations for support
  • 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 will chest shape affect breathing?
Which specialists, such as an orthopedist, should we see?
Would genetic counseling help our family?

Quick facts

Symptoms usually startInfant
InheritanceAutosomal Recessive

GARD says this condition is autosomal recessive, so a child inherits a changed copy of a gene from each parent. It doesn't name a specific gene.

GeneticRespiratory

Also known as: rivera-perez-salas syndrome; thoracolimb dysplasia, rivera type

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Thoracomelic dysplasiaGARD ID 10612 · 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 Thoracomelic dysplasia.

Explore the Thoracomelic dysplasia blog

Explore research for Thoracomelic dysplasia

Explore actively recruiting Thoracomelic dysplasia studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Thoracomelic dysplasia 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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