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J Wrist Surg 2014; 03(01): 060-063
DOI: 10.1055/s-0034-1365828
Wrist and Carpal Anatomy
Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.

Important Anatomical Relationships of the Posterior Interosseous Nerve in the Distal Forearm for Surgical Planning: A Cadaveric Study

Arpit Jariwala
1   Department of Orthopaedics and Trauma Surgery, TORT Centre, Ninewells Hospital, Dundee, Scotland, United Kingdom
,
Balamurali Krishnan
1   Department of Orthopaedics and Trauma Surgery, TORT Centre, Ninewells Hospital, Dundee, Scotland, United Kingdom
,
Roger Soames
2   Centre for Anatomy and Human Identification, College of Life Sciences, University of Dundee, Dundee, Scotland, United Kingdom
,
Carlos A. Wigderowitz
1   Department of Orthopaedics and Trauma Surgery, TORT Centre, Ninewells Hospital, Dundee, Scotland, United Kingdom
› Author Affiliations
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Publication History

Publication Date:
12 February 2014 (online)

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Abstract

A thorough knowledge of the anatomy of the terminal branch of the posterior interosseous nerve (PIN) and its relationship to the anterior interosseous nerve (AIN) is essential in facilitating regional anesthetic blocks and planning surgical exposures for wrist surgery and arthrodesis of wrist and proximal row carpectomy. This cadaveric study focused on the anatomy and course of the PIN and its anatomical relationships at the distal forearm. Thirty embalmed cadaver forearms were dissected using microsurgical techniques. A structured pro forma was used to collect data. The PIN was consistently found in the fourth extensor compartment in all specimens. The last motor branch was given off 46.9 ± 8.4 mm (mean ± standard deviation) from the most proximal part of the ulnar head. The AIN was found lying consistently on the anterior aspect of the interosseous membrane, being on average 2.8 ± 0.2 mm (mean ± standard deviation) from the PIN. This knowledge will facilitate the planning of diagnostic and therapeutic procedures associated with the wrist.

Keywords

cadaveric wirst study - terminal posterior interosseous nerve - denervation wrist surgery
 

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