Skip to content
knowrare
HealthSignal
Your condition community

Living with Spondyloepimetaphyseal dysplasia-short limb-abnormal calcification syndrome

A rare genetic bone condition with short limbs, a narrow chest, and calcium buildup in cartilage.

Understanding Spondyloepimetaphyseal dysplasia-short limb-abnormal calcification syndrome

Spondyloepimetaphyseal dysplasia-short limb-abnormal calcification syndrome is a rare genetic bone condition with short limbs and cartilage that hardens abnormally.

People have short arms and legs, short broad fingers, and a narrow chest with rib differences. Cartilage in places such as the voice box, windpipe, and ribs can calcify (harden). Facial features include a high forehead, wide-set eyes, and a short flat nose. The top neck bones may be unstable, which can press on the spinal cord, and lung infections can recur. Signs may begin in infancy.

Signs & symptoms

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

  • Disproportionate short stature with short limbs
  • Short, broad fingers and broad palms
  • Narrow chest with rib differences
  • Calcium in cartilage
  • Low muscle tone and delayed movement skills
  • Unstable top neck bones (C1-C2)

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 DDR2 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 Kniest SED Group
  • 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 check my child's neck bones for instability?
How can we watch for breathing problems and lung infections?
Would DDR2 gene testing help our family?

Quick facts

Symptoms usually startNewborn and as an Infant
InheritanceAutosomal Recessive
GenesDDR2

Changes in the DDR2 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: smed short limb-abnormal calcification type; smed short limb-hand type; smed type 2; smed-sl; smed-sl/ac; smed, type ii

Patient organizations

  • Kniest SED GroupSpondyloepimetaphyseal dysplasia-short limb-abnormal calcification syndrome · United States
Source: NIH GARD · Spondyloepimetaphyseal dysplasia-short limb-abnormal calcification syndromeGARD ID 10616 · 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 Spondyloepimetaphyseal dysplasia-short limb-abnormal calcification syndrome.

Explore the Spondyloepimetaphyseal dysplasia-short limb-abnormal calcification syndrome blog

Explore research for Spondyloepimetaphyseal dysplasia-short limb-abnormal calcification syndrome

Explore actively recruiting Spondyloepimetaphyseal dysplasia-short limb-abnormal calcification syndrome studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Spondyloepimetaphyseal dysplasia-short limb-abnormal calcification syndrome 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

Powered by HealthSpark, our AI chat helper

I can help you find recruiting Spondyloepimetaphyseal dysplasia-short limb-abnormal calcification syndrome studies. Enter a ZIP code, address or city below and I'll look within 50 miles.

Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.

Get Signals for Spondyloepimetaphyseal dysplasia-short limb-abnormal calcification syndrome

Stay in the loop with community stories and updates from medical researchers.

HealthStoryfor Spondyloepimetaphyseal dysplasia-short limb-abnormal calcification syndrome

Create a living journal that talks back

HealthStory evolves private journaling with a living AI journal that talks back and asks thoughtful questions, helping you capture your Spondyloepimetaphyseal dysplasia-short limb-abnormal calcification syndrome experiences more deeply and prepare for better conversations with your doctors and care team.

Start your journal

Your journal is private. Sharing your story publicly is a separate choice, made with Share your story above.