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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.Although it is found more frequently in persons with several abnormal medical conditions, it is not predictive of any of these conditions since it is also found in persons with no abnormal medical conditions.
A palmar crease is a type of crease on the palm. A single transverse palmar crease also called simian crease is sometimes associated with Down syndrome. [1] Other types of creases include the Sydney crease and the Suwon, or double transverse palmar crease. [2] Analysis of palmar creases is not very objective on the contrary to fingerprint ...
Minor physical anomalies (MPAs) are relatively minor (typically painless and, in themselves, harmless) congenital physical abnormalities consisting of features such as low-set ears, single transverse palmar crease, telecanthus, micrognathism, macrocephaly, hypotonia and furrowed tongue.
no crease Faint red marks Anterior transverse crease only Creases over anterior 2/3 of sole Creases over the entire sole Breast Imperceptible Barely perceptible Flat areola no bud Stippled areola 1–2 mm bud Raised areola 3–4 mm bud Full areola 5–10 mm bud Eye and Ear Lids fused Loosely: −1 Tightly: −2 Lids open pinna flat stays folded
Joints of the hand, X-ray Interphalangeal ligaments and phalanges. Right hand. Deep dissection. Posterior (dorsal) view. The PIP joint exhibits great lateral stability. Its transverse diameter is greater than its antero-posterior diameter and its thick collateral ligaments are tight in all positions during flexion, contrary to those in the metacarpophalangeal joint.
Dermatoglyphics, when correlated with genetic abnormalities, aids in the diagnosis of congenital malformations at birth or soon after.. Klinefelter syndrome: excess of arches on digit 1, more frequent ulnar loops on digit 2, overall fewer whorls, lower ridge counts for loops and whorls as compared with controls, and significant reduction of the total finger ridge count.
The predominant clinical symptoms of wrinkly skin syndrome are wrinkled and inelastic skin over the face, backs of hands/fingers, tops of feet, and abdomen; delayed closure of the fontanelle (baby's soft spot), and increased palmar and plantar creases in the hands and feet, respectively.
X-linked recessive inheritance. Mutations in the FGD1 gene are the only known genetic cause of Aarskog-Scott syndrome. The FGD1 gene provides instructions for making a protein that turns on (activates) another protein called Cdc42, which transmits signals that are important for various aspects of development before and after birth.