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Living with Fibular aplasia, tibial campomelia, and oligosyndactyly syndrome

A rare genetic birth difference affecting leg bones and toes, with a missing or underdeveloped fibula, bent shin bone and fewer toes.

Understanding Fibular aplasia, tibial campomelia, and oligosyndactyly syndrome

Fibular aplasia, tibial campomelia, and oligosyndactyly syndrome is a rare genetic birth difference that affects the bones and toes of the limbs.

The main features are a missing or underdeveloped fibula in one or both legs, curved shin bones (tibial campomelia), and fewer toes than usual on the outer side of the lower limbs. Some people also have fewer fingers on the hands or arms and a cleft lip and/or palate.

Signs & symptoms

GARD doesn't list a separate symptom list. Its summary describes:

  • Missing or underdeveloped fibula
  • Curved shin bone (tibial campomelia)
  • Fewer toes than usual
  • Fewer fingers in some people
  • Cleft lip or palate in some people

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

    Your doctor may refer you to a specialist who knows rare conditions.

  3. Ask which tests can help

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

Care & treatment

Care team
A doctor familiar with rare conditions, plus specialists as needed
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
Which orthopedic specialists treat limb differences?
What options are there for walking support or surgery?
Is genetic testing or counseling available?

Quick facts

GARD doesn't describe a cause for this condition yet, except that it is genetic.

Also known as: fatco syndrome; fibular aplasia-tibial campomelia-oligosyndactyly syndrome; fibular aplasia, tibial campomelia, oligo-syndactyly syndrome; terminal transverse defects of the limbs associated with congenital heart malformations

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Fibular aplasia, tibial campomelia, and oligosyndactyly syndromeGARD ID 2622 · 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 Fibular aplasia, tibial campomelia, and oligosyndactyly syndrome.

Explore the Fibular aplasia, tibial campomelia, and oligosyndactyly syndrome blog

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

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