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Living with Fetal akinesia deformation sequence

A group of problems that result from a baby moving too little before birth, including stiff joints, slow growth and underdeveloped lungs.

Understanding Fetal akinesia deformation sequence

Fetal akinesia deformation sequence (FADS) is a group of features caused by decreased movement of the baby before birth.

It includes slow growth in the womb (IUGR), many stiff joints (arthrogryposis), differences in facial features, and underdeveloped lungs. Experts generally view it as a description of problems that result from fetal akinesia, rather than one specific syndrome.

Signs & symptoms

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

  • Less movement before birth
  • Slow growth in the womb
  • Stiff joints (arthrogryposis)
  • Differences in facial features
  • Underdeveloped lungs

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.

  4. Connect with expert centers

    Arthrogryposis Multiplex Congenita Support Inc. may keep lists of experts for this condition.

Care & treatment

Care team
A doctor familiar with rare conditions, plus specialists as needed
Expert care
Expert lists: Arthrogryposis Multiplex Congenita Support Inc.
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 Arthrogryposis Multiplex Congenita Support Inc.
  • 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
Can genetic testing for RAPSN or DOK7 find a cause?
What is the chance this could happen in another pregnancy?
Which specialists should be involved in my baby's care?

Quick facts

In some cases it is inherited in an autosomal recessive way and can be caused by changes in the RAPSN or DOK7 genes.

Also known as: arthrogryposis multiplex congenita-pulmonary hypoplasia syndrome; fads

Patient organizations

Source: NIH GARD · Fetal akinesia deformation sequenceGARD ID 9634 · 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 Fetal akinesia deformation sequence.

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