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Living with Leri pleonosteosis

A rare inherited bone and joint condition with broad thumbs and big toes, stiff joints, and short height.

Understanding Leri pleonosteosis

Leri pleonosteosis is a rare inherited condition that causes broad, wide thumbs and big toes, stiff joints, and short stature.

Joint movement is limited, and the face may look flatter. Other features can include backward-bending knees, firm lumps under the skin, and thickened tissue in the palms and forearms. A few families across several generations have been reported. It may be noticed in newborns and infants.

Signs & symptoms

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

  • Broad thumbs
  • Short fingers or toes
  • Joint stiffness
  • Severe short stature
  • Scoliosis (curved spine)
  • Knees that bend backward (genu recurvatum)

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
Which bone or joint specialists should see my child?
What can help with joint stiffness and walking?
Should other family members be checked?

Quick facts

Symptoms usually startNewborn and as an Infant
InheritanceAutosomal Dominant

It is inherited in an autosomal dominant way, which means one changed copy of a gene is enough. GARD does not list the specific gene.

Genetic

Also known as: leri pleonosteosis chromosome duplication syndrome

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Leri pleonosteosisGARD ID 88 · 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 Leri pleonosteosis.

Explore the Leri pleonosteosis blog

Explore research for Leri pleonosteosis

Explore actively recruiting Leri pleonosteosis studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Leri pleonosteosis 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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