Bilateral accessory flexor indicis muscle: A case study

A. Hall, G. Davidson, Luke Reid (Lead / Corresponding author)

Research output: Contribution to journalArticlepeer-review


Muscular variations within the upper extremities are common and widely documented. They can have a range of implications including nerve compression and misdiagnosis but are often silent. Our report herein describes a bilateral accessory muscle found in the forearm during routine cadaveric dissection. The muscle originates from the medial epicondyle of the humerus between the origins of the flexor digitorum superficialis and flexor carpi radialis muscles. The muscle is digastric, with the distal belly existing as the first lumbrical and the proximal serving as a supernumerary flexor. This functionally atavistic variation could prove clinically relevant for the purposes of donor muscle or tendon tissue as well as surgical complications and compressive neuropathies.
Original languageEnglish
Article number100716
Number of pages3
Issue number360
Early online date25 Oct 2023
Publication statusPublished - Mar 2024


  • Anatomical variation
  • Anatomy
  • Flexor digitorum
  • Forearm
  • Thiel-embalmed cadaver

ASJC Scopus subject areas

  • Anatomy


Dive into the research topics of 'Bilateral accessory flexor indicis muscle: A case study'. Together they form a unique fingerprint.

Cite this