Preferred Label : Polydactyly of a triphalangeal thumb;
ICD-11 definition : Polydactyly of a triphalangeal thumb is a form of preaxial polydactyly of fingers,
characterized by the presence of a usually opposable triphalangeal thumb which may
or may not be duplicated. Its shape may vary (wedge to rectangular) and it can be
deviated in the radio-ulnar plane (clinodactyly). The involved ligaments, muscles,
tendons and joints of the duplicated thumb from distal interphalangeal joint to radiocarpal
joint can be hypoplastic, malformed, or absent with varying degrees of stiffness or
instability. Two forms have been characterized: unilateral and bilateral. The disease
is inherited in an autosomal dominant manner.;
Origin ID : 728781925;
UMLS CUI : C1868114;
Currated CISMeF NLP mapping
See also inter- (CISMeF)
Semantic type(s)
UMLS correspondences (same concept)
Polydactyly of a triphalangeal thumb is a form of preaxial polydactyly of fingers,
characterized by the presence of a usually opposable triphalangeal thumb which may
or may not be duplicated. Its shape may vary (wedge to rectangular) and it can be
deviated in the radio-ulnar plane (clinodactyly). The involved ligaments, muscles,
tendons and joints of the duplicated thumb from distal interphalangeal joint to radiocarpal
joint can be hypoplastic, malformed, or absent with varying degrees of stiffness or
instability. Two forms have been characterized: unilateral and bilateral. The disease
is inherited in an autosomal dominant manner.