What causes deformed hands and feet?
Split hand/foot malformation can be inherited in an autosomal dominant pattern in some families, autosomal recessive in some families, and X-linked in others. SHFM also occurs as a result of a random (sporadic) mutation during fertilization or embryonic development.
What exactly is ectrodactyly?
Ectrodactyly, which is also known as split hand/foot malformation (SHFM), is a condition characterized by absence or malformation of one or more of the fingers or toes. Usually, the middle fingers or toes are affected.
What is the most common congenital anomaly of the hand?
When an extra digit is located in the center of the hand, it is called central polydactyly. Polydactyly is the most common congenital hand deformity. It affects boys and girls equally. Black children are more likely to have ulnar polydactyly, and Asian and white children are more likely to have radial polydactyly.
What is lobster syndrome?
Ectrodactyly (also known as a split hand-split foot malformation, cleft hand or lobster claw hand) is a skeletal anomaly predominantly affecting the hands (although the feet can also be affected). The condition has a highly variable severity.
What are deformed hands called?
Cleft Hand (Ectrodactyly) Cleft hand (also called ectrodactyly or split hand) is when the middle part of the hand develops abnormally. Babies with this condition are missing one or more central fingers on the hand.
Is cleft hand a disability?
Cleft hand can appear unilateral or bilateral, and can appear isolated or associated with a syndrome. Split hand/foot malformation (SHFM) is characterized by underdeveloped or absent central digital rays, clefts of hands and feet, and variable syndactyly of the remaining digits….
| Ectrodactyly | |
|---|---|
| Specialty | Medical genetics |
What is a congenital hand difference?
A congenital hand difference is a birth defect involving a hand that is abnormal at birth. One in 20 children is born with this birth defect. These can be either major or minor.
What are some possible differences between normal and abnormal hand development?
Some possible differences include missing parts (failure of formation), webbed or fused parts of the hand (failures of separation), extra parts in the hand (duplication), or parts that are larger or smaller than normal. During fetal development, the upper limb is formed between four and eight weeks of pregnancy.
What is the most common birth defect with extra fingers?
Central polydactyly: Extra fingers can be located between center fingers, although this is less common. Syndactyly is one of the most common birth defects of the upper limbs—seen in as many as 1 in every 2,000 live births.
How common are hand malformations in babies with congenital defects?
Of the 1% to 2% of babies born with congenital defects, 10% are born with malformations to the hand. These anomalies occur in early pregnancy and are sometimes diagnosed by ultrasound during pregnancy.