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Living with Hallux varus-preaxial polysyndactyly syndrome

A rare condition present at birth, with big toes that turn inward and extra or joined big toes.

Understanding Hallux varus-preaxial polysyndactyly syndrome

Hallux varus-preaxial polysyndactyly syndrome is a rare genetic limb condition with inward-turned big toes and extra first toes.

Both big toes (halluces) are displaced toward the middle of the foot and the first toes are extra or joined (preaxial polysyndactyly). X-rays show broad, short, misshapen first foot bones, and may show duplicate toe bones. GARD says there have been no further descriptions in the literature since 1980. It is noticed in the newborn period.

Signs & symptoms

Symptoms vary. GARD lists these among the most common:

  • Gap between the first and second toes
  • Inward-turned big toes (hallux varus)
  • Extra or joined first toes
  • Curved little finger (clinodactyly)

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.

Care & treatment

Care team
Bone and joint specialists (orthopedists or orthopedic surgeons); Genetic specialists (geneticists)
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
What treatment or surgery can help with toe position and shoe fit?
Should the hands and other bones be checked?
Can genetic testing help us understand the chance for future children?

Quick facts

Symptoms usually startNewborn
InheritanceAutosomal Recessive

Changes in genes cause this condition. A child inherits a changed copy of the gene from each parent (autosomal recessive). GARD does not name the gene.

Genetic

Also known as: hallux varus and preaxial polysyndactyly; hallux varus, preaxial polysyndactyly syndrome; kleiner holmes syndrome; kleiner-holmes syndrome

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Hallux varus-preaxial polysyndactyly syndromeGARD ID 3118 · 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 Hallux varus-preaxial polysyndactyly syndrome.

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