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Symbrachydactyly is a congenital abnormality, characterized by limb anomalies consisting of brachydactyly, cutaneous syndactyly and global hypoplasia of the hand or foot. [1] In many cases, bones will be missing from the fingers and some fingers or toes may be missing altogether.
The extra digit is most common on the ulnar (little finger) side of the hand, less common on the radial side, and very rarely within the middle three digits. These are respectively known as postaxial (little finger), preaxial (thumb), and central (ring, middle, index fingers) polydactyly.
Most common form of brachydactyly. It shortens the final bone in the thumbs and does not affect the fingers at all. [9] Type E, BDE: 113300: HOXD13: 2q31-q32: Brachydactyly type E. This is the rarest form of brachydactyly. It is most often part of another condition that someone is born with. Type E shortens the bones in the hands and feet along ...
The ring finger followed by the little and middle fingers are most commonly affected. [2] It can affect one or both hands. [8] The condition can interfere with activities such as preparing food, writing, putting the hand in a tight pocket, putting on gloves, or shaking hands. [2] The cause is unknown but might have a genetic component. [4]
Typical hand was manifest in the complete or incomplete absence of the middle finger [21] Atypical hand had a more severe manifestation in which there was varying absence of the central index, middle and ring finger rays [21] V-shaped cleft [6] U-shaped cleft [6] One to four limbs involved [6] One limb involved (no feet) [6] Higher incidence [16]
Clinodactyly is an autosomal dominant trait that has variable expressiveness and incomplete penetrance. [citation needed]Clinodactyly can be passed through inheritance and presents as either an isolated anomaly or a component manifestation of a genetic syndrome. [2]
Arachnodactyly ("spider fingers") is a medical condition that is characterized by fingers and toes that are abnormally long and slender, in comparison to the palm of the hand and arch of the foot. In some cases, the thumbs of an individual with the condition are pulled inwards towards the palm.
Linburg–Comstock variation is an occasional tendinous connection between the flexor pollicis longus and the flexor digitorum profundus of the index, the middle finger or both. It is found in around 21% of the population. [1] It is an anatomical variation in humans, which may be viewed as a pathology if it causes symptoms. It was recognised as ...