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The digits at the borders of the cleft might be syndactilyzed, and one or more digits can be absent. In most types, the thumb, ring finger and little finger are the less affected parts of the hand. [7] The incidence of cleft hand varies from 1 in 90,000 to 1 in 10,000 births depending on the used classification.
Thumb hypoplasia is a spectrum of congenital abnormalities of the thumb varying from small defects to complete absence of the thumb. [1] It can be isolated, when only the thumb is affected, and in 60% of the cases [2] it is associated with radial dysplasia [1] (or radial club, radius dysplasia, longitudinal radial deficiency). Radial dysplasia ...
Brachydactyly (from Greek βραχύς (brachus) 'short' and δάκτυλος (daktulos) 'finger') is a medical term denoting the presence of abnormally short digits (fingers or toes) at birth. The shortness is relative to the length of other long bones and other parts of the body. Brachydactyly is an inherited, dominant trait.
The classification of ulnar polydactyly exists of either two or three types. The two-stage classification, according to Temtamy and McKusick, involves type A and B. In type A there is an extra little finger at the metacarpophalangeal joint, or more proximal including the carpometacarpal joint. The little finger can be hypoplastic or fully ...
One class of congenital limb deformities, limb reduction defects, occurs when one or more limbs are undersized or missing parts. The prevalence of these defects in the United States is approximately 1 in 1900 births. [2] This category includes amelia, ectrodactyly, radial dysplasia, and phocomelia among others. These defects are more likely to ...
Hand and foot defects seen in Saethre-Chotzen syndrome. Webbing between the second and third finger and between the second and third toes [2] Short fingers and toes (brachydactyly) [4] Broad thumb and/or a broad hallux (big toe) with a valgus deformity (outward angulation of the distal segment of a bone/joint) [6]
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In general the surgical treatment is done for improvement of the thumb function. However, an extra advantage of the surgery is the improvement in appearance of the thumb. In the past, surgical treatment of the triphalangeal thumb was not indicated, [11] but now it is generally agreed that operative treatment improves function and appearance ...