Morphological study of the proximal boundary of the flexor retinaculum and of its constituent parts

H. S. Won, S. H. Han, C. S. Oh, I. H. Chung, J. S. Suh, S. Y. Lim

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

The proximal boundary of the flexor retinaculum is not readily demarcated, and previous reports of three distinct regions of the flexor retinaculum were not consistent with the authors' experience. This study was undertaken to clarify the proximal boundary and the constituent parts of the flexor retinaculum. A total of 56 cadaveric wrists were used in the study. The proximal boundary of the flexor retinaculum was identified by a change in thickness and colour of the longitudinally sectioned surface of the continuous membranous sheet of the flexor retinaculum and antebrachial fascia. Steel wires were placed on the proximal and distal boundaries, and anteroposterior radiographic images were taken. MRI was carried out before dissection or serial section. The locations of the proximal and distal boundaries of the flexor retinaculum varied. The flexor retinaculum was comprised of two parts, which were distinguishable by thickness and transparency. These two parts were also identified on MR images and by light microscopy.

Original languageEnglish
Pages (from-to)35-41
Number of pages7
JournalJournal of Hand Surgery: European Volume
Volume37
Issue number1
DOIs
StatePublished - Jan 2012

Bibliographical note

Funding Information:
This study was supported by Samsung Biomedical Research Institute (B-A7-202).

Keywords

  • Antebrachial fascia
  • Carpal tunnel syndrome
  • Flexor retinaculum
  • Palmaris longus

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