Scientific Hand Charts Collection:
Patau syndrome, a.k.a. trisomy 13
3 Hand Charts for Patau syndrome!
Edwards syndrome, also called trisomy 13 or trisomy D, is an chromosomal condition that causes severe birth defects in newborns; the median age for babies born with trisomy 13 is close to the age of 4.
Prevalence: estimated at 1 in 15,000 live births.
Quite a few detailed hand charts are available for Patau syndrome; most charts describe the significance of various typical features inside especially the dermatoglyphics, which manifest often combined with a simian line (= single transverse flexion crease).
NOTICE: Individual hand features described below should not get associated in isolation with any theme; only combinations involving multiple hand levels have potential for diagnostic purposes.
Hautleistenfibel (1981), p.64;
authors: A. Rodewald & H. Zankl
Dermatoglyphics in Medical Disorders (1976), p.167;
authors: B. Schaumann & M. Alter
Handbook of Clinical Dermatoglyphs (1971), p.34+35;
authors: M.S. Elbualy & J.D. Schindeler
Other significant hand signs (not reported inside the hand charts):
Small hands, as well as wide and short hands with short fingers belong to the most common physical signs in Patau syndrome (source: Wikipedia).
Deep palmar creases also belong to the associated anomalies in Patau syndrome (source: TheFetus.net). A single crease on the 5th finger may also be present in a minority of cases (reported in 5% of trisomy 13 cases by Hodes et al., 1978).
Long, hyperconvex nails are very common: 68%; underdevelopment of the nails [= hypoplastic nails] is also relatively common: 37.5% (source: A.I. Taylor, 1968).
A clenched hand with overlapping fingers is often present in Patau syndrome (source: Pediatrics Clerkship).
Retroflexible thumbs (25%) is a common feature, and distally implanted thumbs (12%) are also relatively common (source: A.I Taylor, 1968).
Post-axial polydactyly [= extra finger on ulnar side] is seen in a large majority (76%) of the Patau syndrome cases (source: A.I Taylor, 1968).
All significant hand signs listed above for Patau syndrome together cover seven out of the nine perspectives of the hand as defined according Multi-Perspective Hand Reading (including hand level 2, 3, 4, 5, 7, 8 & 9).
A summary of the most significant hand sign combinations in Patau syndrome is described here:
Decoding the language of the hand:
hand sign combinations in Patau syndrome!
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