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Living with Postaxial polydactyly-dental and vertebral anomalies syndrome

A rare genetic condition with extra fingers or toes, spine bone differences and tooth differences, present from birth.

Understanding Postaxial polydactyly-dental and vertebral anomalies syndrome

Postaxial polydactyly-dental and vertebral anomalies syndrome is a rare genetic condition that affects the hands, feet, spine and teeth.

It includes an extra finger or toe beside the little finger or toe, short fingers and broad toes, small or fused spine bones, and tooth differences such as fused teeth, large teeth, missing teeth and short roots. It is present from birth.

Signs & symptoms

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

  • Extra little finger
  • Short fingers or toes
  • Underdeveloped or fused spine bones
  • Scoliosis and rounded upper back
  • Missing, large or fused teeth
  • Short stature

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 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.

Care & treatment

Care team
Genetic specialists (geneticists); Gum, teeth and mouth specialists (odontologists)
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
Would genetic testing help find the cause in our family?
How should the spine be monitored for curvature?
Which dental care and specialists are recommended?

Quick facts

Symptoms usually startNewborn

GARD says changes in genes cause this condition but doesn't name a gene or describe an inheritance pattern.

Genetic

Also known as: polydactyly, postaxial, with dental and vertebral anomalies

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Postaxial polydactyly-dental and vertebral anomalies syndromeGARD ID 16614 · 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 Postaxial polydactyly-dental and vertebral anomalies syndrome.

Explore the Postaxial polydactyly-dental and vertebral anomalies syndrome blog

Explore research for Postaxial polydactyly-dental and vertebral anomalies syndrome

Explore actively recruiting Postaxial polydactyly-dental and vertebral anomalies syndrome studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Postaxial polydactyly-dental and vertebral anomalies syndrome 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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