Pollex flexus congenitus

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Classification according to ICD-10
Q74.0 Other congenital malformations of the upper extremity (s) and the

Shoulder girdle

ICD-10 online (WHO version 2019)

For small children a congenital variant comes fast fingers on the thumb before that Pollex flexus congenital (congenital curved thumb) is called. In this case, the thumb on the distal phalanx is in a flexed position and cannot be actively stretched.

This change is innate, but usually only becomes apparent after several weeks, months or later.

The cause is a disturbance in the passage of the flexor tendon through the ring ligaments, which hold the tendon in place. There is a nodular thickening in the tendon so that sliding is no longer possible. A corresponding thickening of tissue can be palpable on the flexor side in the base joint, a so-called "Notta'scher knot".

Treatment consists of cutting the blocking ring ligament in the first few years of life.

Individual evidence

  1. Alphabetical index to the ICD-10-WHO version 2019, volume 3. German Institute for Medical Documentation and Information (DIMDI), Cologne, 2019, p. 277
  2. http://www.klinikum.uni-heidelberg.de/Pollex-flexus-congenitus.110165.0.html
  3. Archived copy ( Memento of the original from March 16, 2014 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. @1@ 2Template: Webachiv / IABot / www.kinderchirurgie.uniklinikum-jena.de