What causes lobster claw syndrome?

Genetics. A large number of human gene defects can cause ectrodactyly. The most common mode of inheritance is autosomal dominant with reduced penetrance, while autosomal recessive and X-linked forms occur more rarely. Ectrodactyly can also be caused by a duplication on 10q24.

What causes hand and foot deformities?

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.

How common is split hand malformation?

It is a malformation of the limb involving the central rays of the autopod and presenting with a deep median cleft of the hand and/or foot, aplasia/hypoplasia of the phalanges, metacarpals, and metatarsals. It can occur as part of a syndrome or isolated entity. The incidence of SHFM is around 1 in 90,000 live births.

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. All four hands and feet may be affected in some individuals.

Can lobster hands be fixed?

Not all children need surgery for a cleft hand, particularly if the condition is not too severe and they have good use of their hand. However, if your child’s hand has significant functional or cosmetic problems, their doctor may recommend surgery. There are many different surgical options to repair a cleft hand.

What is cleft hand?

Cleft hand is a rare condition in which the center of a child’s hand is missing a finger or fingers. Cleft hand makes up less than 5 percent of all congenital hand differences. Approximately one in 50,000 to one in 100,000 babies are born with cleft hand.

Is Brachydactyly recessive or dominant?

Most types of brachydactyly are genetic, which means that they can be passed down in a family. It’s a dominant genetic trait, so only one parent needs to have the condition for a child to inherit it.

What causes split hand syndrome?

It has been proposed as a relatively specific sign for amyotrophic lateral sclerosis (ALS or Lou Gehrig’s disease). It can also occur in other disorders affecting the anterior horn, such as spinal muscular atrophy, Charcot-Marie-Tooth disease, poliomyelitis and progressive muscular atrophy.

Is Ectrodactyly a disability?

Intellectual disability – spasticity -ectrodactyly syndrome is a rare intellectual disability syndrome characterized by severe intellectual disability, spastic paraplegia (with wasting of the lower limbs) and distal transverse defects of the limbs (e.g. ectrodactyly, syndactyly , clinodactyly of the hands and/or feet).

What are lobster hands called?

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).