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Living with Adducted thumbs-arthrogryposis syndrome, Christian type

A rare genetic condition present from birth that affects body development, with cleft palate, joint stiffness, and a small head.

Understanding Adducted thumbs-arthrogryposis syndrome, Christian type

Adducted thumbs-arthrogryposis syndrome, Christian type is a rare genetic condition that affects the development of the body.

Features include a cleft palate, a small head (microcephaly), early closing of skull bones (craniosynostosis), limited joint movement (arthrogryposis), and intellectual disability. Some people also have different facial features, trouble swallowing, low muscle tone, bluish skin color, extra hair growth on the legs, or hardening of the skin. It is noticed in newborns.

Signs & symptoms

Symptoms vary from person to person. GARD's summary says they include:

  • Cleft palate
  • Small head size (microcephaly)
  • Early closing of skull bones (craniosynostosis)
  • Limited joint movement (arthrogryposis)
  • Intellectual disability
  • Trouble swallowing

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, ear, nose, and throat specialists and genetic specialists.

  3. Ask which tests can help

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

  4. Connect with expert centers

    World Craniofacial Foundation may keep lists of experts for this condition.

Care & treatment

Care team
Bone and joint specialists (orthopedists or orthopedic surgeons); Ear, nose, and throat specialists (otolaryngologists); Genetic specialists (geneticists)
Expert care
Expert lists: World Craniofacial Foundation
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 World Craniofacial Foundation and other patient organizations
  • 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 gene is involved, and is genetic testing available?
Which specialists should be on my child's care team?
What help is available for feeding and swallowing?

Quick facts

Symptoms usually startNewborn
InheritanceAutosomal Recessive

GARD says it is caused by a recessive gene, so a child inherits a changed copy of the gene from each parent.

Genetic

Also known as: adducted thumbs syndrome

Patient organizations

Source: NIH GARD · Adducted thumbs-arthrogryposis syndrome, Christian typeGARD ID 10277 · 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

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