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- A simian crease is a single palmar crease, often a variant of normal, but frequently associated with Down's syndrome. The name alludes to the fact that other primates have a single palmar crease. The creasing of the palm relates to the way the hand is held in utero.
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What is the genesis of a single upper palmar crease?
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In humans, a single transverse palmar crease is a single crease that extends across the palm of the hand, formed by the fusion of the two palmar creases.
The relationship between the upper palmar creases and the alignment of the third, fourth, and fifth metacarpal-phalangeal joints is radiographically demonstrated with radio- paque contrast material placed in the creases.
What do we really know about the lines in the palm of our hands? This section presents an overview of detailed facts about the hand lines, seen from various perspectives - including e.g.: evolution, primatology, embryology, aberrant- and normal variations, and palmistry vs. academic science.
Jul 1, 2019 · The simian crease, aptly named for its resemblance to the palmar creases of non‐human simian primates, has received recognition clinically and anthropologically owing to its abnormal...
Flexion creases are formed during early intrauterine life and, therefore, they can be influenced by factors causing aberrant de velopment of the embryo. The first major palmar crease to appear on the embryonic palm is the radial longitudinal crease that borders the thenar eminence.
May 21, 2024 · Single transverse palmar crease refers to a single crease across the palm of the hand. In most individuals, there are two slightly offset creases across the palm. Sometimes referred to as simian crease, now more commonly called single transverse palmar crease, or STPC.
Jul 13, 2019 · The simian crease, aptly named for its resemblance to the palmar creases of nonhuman simian primates, has received recognition clinically and anthropologically owing to its abnormal appearance and confounding cytogenetic etiology.
