Overview
Unilateral apodia is an extremely rare congenital limb deficiency in which a person is born missing one foot. The term 'apodia' comes from Greek and literally means 'without a foot.' In this condition, one leg ends above where the foot would normally develop, while the other foot is present and normal. This happens during early pregnancy when the limbs are forming. The condition is present at birth and is usually noticed immediately. The Orphanet code 295105 for this condition is marked as obsolete, meaning it may now be classified under a broader category of limb reduction defects or terminal transverse limb deficiencies. The exact cause of unilateral apodia is not always known. It may occur as an isolated birth defect or as part of a broader syndrome. Possible causes include disruptions in blood flow to the developing limb, amniotic band syndrome (where strands of tissue wrap around the limb in the womb), or genetic factors. In many cases, no clear cause is found. Treatment focuses on helping the child achieve the best possible mobility and function. This typically involves fitting a prosthetic foot or lower limb device, physical therapy, and occupational therapy. Surgery may sometimes be needed to shape the limb for better prosthetic fitting. With modern prosthetics and supportive care, many individuals with unilateral apodia lead active and fulfilling lives.
Also known as:
Key symptoms:
Absence of one foot at birthShortened leg on the affected sideLeg length differenceDifficulty with balance and walkingPossible differences in muscle development of the affected leg
Variable
Can be inherited in different ways depending on the underlying gene
Neonatal
Begins at or shortly after birth (first 4 weeks)
FDA & Trial Timeline
1 eventData sourced from FDA regulatory filings and ClinicalTrials.gov. Updated periodically.
Treatments
No FDA-approved treatments are currently listed for OBSOLETE: Apodia, unilateral.
View clinical trials →Clinical Trials
View all trials with filters →No actively recruiting trials found for OBSOLETE: Apodia, unilateral at this time.
New trials open frequently. Follow this disease to get notified.
Specialists
View all specialists →No specialists are currently listed for OBSOLETE: Apodia, unilateral.
Treatment Centers
8 centersBaylor College of Medicine Rare Disease Center ↗
Baylor College of Medicine
📍 Houston, TX
🏥 NORDStanford Medicine Rare Disease Center ↗
Stanford Medicine
📍 Stanford, CA
🔬 UDNNIH Clinical Center Undiagnosed Diseases Program ↗
National Institutes of Health
📍 Bethesda, MD
🔬 UDNUCLA UDN Clinical Site ↗
UCLA Health
📍 Los Angeles, CA
🔬 UDNBaylor College of Medicine UDN Clinical Site ↗
Baylor College of Medicine
📍 Houston, TX
🔬 UDNHarvard/MGH UDN Clinical Site ↗
Massachusetts General Hospital
📍 Boston, MA
🏥 NORDMayo Clinic Center for Individualized Medicine ↗
Mayo Clinic
📍 Rochester, MN
👤 Mayo Clinic Center for Individualized Medicine
🏥 NORDUCLA Rare Disease Day Program ↗
UCLA Health
📍 Los Angeles, CA
Financial Resources
1 resourcesTEPADINA
Amneal Pharmaceuticals LLC
TEPADINA — Contact Amneal Pharmaceuticals LLC
Travel Grants
No travel grants are currently matched to OBSOLETE: Apodia, unilateral.
Community
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Caregiver Resources
NORD Caregiver Resources
Support, advocacy, and financial assistance for caregivers of rare disease patients.
Mental Health Support
Rare disease caregiving can be isolating. Connect with counseling and peer support.
Family & Caregiver Grants
Financial assistance programs specifically for caregivers of rare disease patients.
Social Security Disability
Learn how rare disease patients may qualify for SSDI/SSI benefits.
Questions for your doctor
Bring these to your next appointment
- Q1.What caused my child's limb difference, and should we pursue genetic testing?,At what age should we start prosthetic fitting?,How often will the prosthetic need to be replaced as my child grows?,What physical therapy program do you recommend?,Are there any associated conditions we should screen for?,Can you refer us to a family support group or peer network?,What adaptive sports or activities are available for children with limb differences?
Common questions about OBSOLETE: Apodia, unilateral
What is OBSOLETE: Apodia, unilateral?
Unilateral apodia is an extremely rare congenital limb deficiency in which a person is born missing one foot. The term 'apodia' comes from Greek and literally means 'without a foot.' In this condition, one leg ends above where the foot would normally develop, while the other foot is present and normal. This happens during early pregnancy when the limbs are forming. The condition is present at birth and is usually noticed immediately. The Orphanet code 295105 for this condition is marked as obsolete, meaning it may now be classified under a broader category of limb reduction defects or terminal
At what age does OBSOLETE: Apodia, unilateral typically begin?
Typical onset of OBSOLETE: Apodia, unilateral is neonatal. Age of onset can vary across affected individuals.
What treatment and support options exist for OBSOLETE: Apodia, unilateral?
1 patient support program are currently tracked on UniteRare for OBSOLETE: Apodia, unilateral. See the treatments and support programs sections for copay assistance, eligibility, and contact details.