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Living with Spondylocarpotarsal synostosis syndrome

A genetic condition that affects how bones grow, especially in the spine, wrists, and ankles.

Understanding Spondylocarpotarsal synostosis syndrome

Spondylocarpotarsal synostosis syndrome is a genetic condition that affects how bones develop throughout the body.

Babies are born close to normal length, but the torso grows slowly, so height ends up shorter over time. Bones in the spine, wrists, and ankles can be misshapen or joined together (fused). Some people also have hearing loss, a cleft palate, or very flexible joints. Intelligence is generally not affected, though mild developmental delay has been reported in some people. Signs may show in infancy or childhood.

Signs & symptoms

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

  • Short stature with a short torso
  • Spine bones that are misshapen or fused
  • Curved spine (scoliosis)
  • Fused wrist and ankle bones
  • Feet that turn inward and up (clubfeet)
  • Hearing loss

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. Consider genetic testing

    Changes in FLNB are linked to this condition. Genetic testing and counseling can help confirm a diagnosis and explain what it means for your family.

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
How can we track spine curvature and growth over time?
Should my child have a hearing test, and how often?
Would genetic testing of the FLNB gene help our family?

Quick facts

Symptoms usually startInfant and as a Child
InheritanceAutosomal Recessive
GenesFLNB

Changes in the FLNB gene cause this condition. It is autosomal recessive, meaning a child inherits a changed copy of the gene from each parent.

Genetic

Also known as: congenital scoliosis with unilateral unsegmented bar; congenital synspondylism; scoliosis, congenital with unilateral unsegmented bar; sct; spondylocarpotarsal syndrome; spondylocarpotarsal synostosis

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Spondylocarpotarsal synostosis syndromeGARD ID 4974 · 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 Spondylocarpotarsal synostosis syndrome.

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Explore research for Spondylocarpotarsal synostosis syndrome

Explore actively recruiting Spondylocarpotarsal synostosis syndrome studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Spondylocarpotarsal synostosis syndrome with HealthSpark. Share your city to explore research near you.

  • Recruiting studies from ClinicalTrials.gov
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  • Eligibility is confirmed by the study team

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