PubMed Health⌕ Search
Home/Archive/PubMed

PubMed · 1767149

[Polydactyly].

P Greant
View original source ↗Export metadata ↓

Abstract

Polydactyly is one of the hand's most frequent congenital deformities. Classification of this deformity distinguishes radial or thumb duplication, central duplication that is almost constantly associated with syndactyly (called polysyndactyly) and ulnar duplication. The latter is important especially in caucasian people because it can be part of a syndrome. Surgical techniques are briefly mentioned for the different forms.

Explore related subjects

FingersHumansInfantSurgical Procedures, OperativeEnglish AbstractJournal Article

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

P Greant. 1991. [Polydactyly].. https://pubmed.ncbi.nlm.nih.gov/1767149/

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related citations

PubMed1992

An anisotropy of human tactile sensitivity and its relation to the visual oblique effect.

The ability of humans to detect striated stimuli on the distal phalanges was found to be highly anisotropic. Observers were much more sensitive to stripes presented in the proximal-distal orientation than to stripes in any other orientation. This tactile anisotropy was contrasted with the well-known visual anisotropy in which sensitivity is greatest for stripes at the horizontal and vertical orientations. We suggest that both the tactile anisotropy and the visual anisotropy are caused by corresponding anisotropies in the distribution of preferred orientations of orientation-selective neurons with in the respective modalities.

Fingers↗
PubMed1992

Independent control of the digits: changes in perceived heaviness over a wide range of force.

Perceived heaviness of a weight lifted by flexion of the distal joint of one digit increases when an adjacent digit concurrently lifts a weight. The present study confirmed this finding for relatively low weights (representing 3-5% maximal voluntary force) and a method was adapted to show that this effect occurs for much larger weights (20-25% maximal force). Thus, the increase in perceived heaviness is likely to operate over a wide range of muscle force generated by the hand. As perceived heaviness is biased by the magnitude of the central motor commands, these findings may reflect a lack of complete independence of motor commands to the long flexor muscles acting on the digits.

Fingers↗