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Living with Short femur

A condition present at birth in which the thigh bone is shorter than usual or partly missing.

Understanding Short femur

Short femur, also called congenital femoral deficiency (CFD), is a group of birth differences in which the thigh bone (femur) did not develop fully.

CFD most often affects one leg but can affect both. It ranges from a slightly short femur that looks typical to a femur that is mostly or completely missing. The hip and knee joints may also be weak or unstable. It is noticed during pregnancy or in the newborn period.

Signs & symptoms

GARD doesn't list specific symptoms for this condition yet. Based on its summary, it involves:

  • Shorter thigh bone
  • Thigh bone partly or fully missing
  • Unstable hip joint
  • Unstable knee joint

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
How severe is the femur difference in my child?
Which orthopedic specialists treat CFD?
How will the hip and knee be monitored as my child grows?

Quick facts

Symptoms usually startduring Pregnancy and as a Newborn

GARD says the cause is usually not known and it does not appear to be inherited. Taking the drug thalidomide during pregnancy can cause it.

Genetic

Also known as: congenital hypoplasia of femur; congenital short femur; femoral agenesis/hypoplasia; femoral hypoplasia; femoral intercalary meromelia; hypoplasia of the femora

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Short femurGARD ID 1503 · 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 Short femur.

Explore the Short femur blog

Explore research for Short femur

Explore actively recruiting Short femur studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Short femur 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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