Title
Functional anatomy of the dorsal hood or the hand: correlation of ultrasound and MR findings with cadaveric dissection Functional anatomy of the dorsal hood or the hand: correlation of ultrasound and MR findings with cadaveric dissection
Author
Faculty/Department
Faculty of Medicine and Health Sciences
Publication type
article
Publication
Secaucus, N.J. ,
Subject
Human medicine
Source (journal)
European radiology. - Secaucus, N.J.
Volume/pages
19(2009) :8 , p. 1849-1856
ISSN
0938-7994
ISI
000267680700003
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
The main aim of this study was to provide an overview of the anatomy of the dorsal hood (DH) based on the dissection of sixteen cadaver hands, correlated with magnetic resonance (MR) and ultrasound findings. A secondary aim was to assess the function of components of the DH. Sixteen embalmed hands were evaluated by MRI and ultrasound before being dissected. Each hand was photographed during each stage of dissection. Secondly we evaluated the role of the different structures of the DH in the stability of the extensor tendon by transection of the different components alternatively at the ulnar and radial sides. MR, ultrasound, and dissection showed that the extensor tendon (ET) is stabilized by the sagittal band (SB) at the level of the metacarpophalangeal (MCP) joint and more distally by the transverse and the oblique bands, respectively. Transection of the radial SB of the second finger leads systematically to ulnar dislocation of the ET. The transection of the ulnar DH does not lead to instability of the ET. The SB is the most important structure of the DH in the stability of the ET at the MCP level. Rupture of the radial SB of the second finger leads systematically to ulnar dislocation of the ET.
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