adactylia
Học thuậtThân thiện
Definition
Noun: A rare congenital condition characterized by the complete absence of one or more fingers and/or toes from birth.
Usage
This is a highly specific medical term used in clinical and anatomical contexts to describe a physical malformation present at birth. It is not used in everyday conversation.
Examples
- The ultrasound revealed a fetal anomaly diagnosed as adactylia of the left hand.
- Adactylia can occur as an isolated condition or as part of a genetic syndrome.
- Surgical options for adactylia are often discussed with a pediatric orthopedic specialist.
Advanced Usage
- The term is often used in formal medical documentation, genetic counseling reports, and academic literature on congenital disorders.
- It may be specified further as (absence at the tips) or (absence along a specific ray of the hand or foot).
Variants and Related Words
- Adactyly (noun): An alternative and more common spelling for the same condition.
- Ectrodactyly (noun): A related but distinct condition involving the split or cleft hand/foot with missing central digits.
- Oligodactyly (noun): The congenital presence of fewer than the normal number of digits, which may include cases of adactylia.
Synonyms
- Congenital absence of digits: A descriptive synonym.
- Aphalangia: Specifically refers to the absence of the phalangeal bones in the fingers or toes, which may result in a similar presentation.
Notes on Meaning
This term refers strictly to the absence of the digit structures. It is different from conditions where digits are fused (syndactyly), webbed, or malformed but present. The cause is typically a failure of formation during embryonic limb development.
Noun
- congenital absence of fingers and/or toes