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Living with Distal symphalangism

A rare genetic bone condition that makes the end joints of the fingers and toes stiff and unable to bend.

Understanding Distal symphalangism

Distal symphalangism is a rare genetic bone condition that makes the joints at the ends of the fingers and toes stiff and unable to move.

In this condition, the joints in the hands and feet closest to the fingertips and toe tips do not bend as they should. It can affect the hands, the feet, or both. It is present from the newborn and infant years.

Signs & symptoms

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

  • Stiff joints
  • Fingers that stay bent (camptodactyly)
  • Fused wrist bones (less common)

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
Would genetic testing help our family?
Could hand therapy help with finger use?
Which specialist should follow my hands and feet over time?

Quick facts

Symptoms usually startNewborn and as an Infant
InheritanceAutosomal Dominant

GARD says changes in a person's genes cause this condition. It is autosomal dominant, meaning one changed copy of the gene can cause it.

Genetic

Also known as: distal symphalangism (disease); symphalangism, distal

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Distal symphalangismGARD ID 5074 · 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 Distal symphalangism.

Explore the Distal symphalangism blog

Explore research for Distal symphalangism

Explore actively recruiting Distal symphalangism studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Distal symphalangism 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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