Universität zu Köln

Wegmann, Kilian, Knowles, Nikolas, Lalone, Emily, Mueller, Lars P., Athwal, George S. and King, Graham J. W. (2019). Computed Tomography Analysis of the Radial Notch of the Ulna. J. Hand Surg.-Am. Vol., 44 (9). PHILADELPHIA: W B SAUNDERS CO-ELSEVIER INC. ISSN 1531-6564

Full text not available from this repository.

Abstract

Purpose The anatomy of the radial head and capitellum has been extensively studied; however, the anatomy of the radial notch of the ulna (RNU) has received little attention. This imaging-based anatomic study characterizes the morphology of the RNU. Methods Ninety-eight cadaveric arms (57 male, 72 +/- 14 y) were imaged with computed tomography, and 3-dimensional reconstructions of the proximal ulna were constructed. The anteroposterior and proximal-distal dimensions of the RNU as well as the radius of curvature at standardized levels were measured in 2-mm increments. The orientation of the RNU was also determined. Results The proximal-distal and anteroposterior dimensions of the RNU were 12 +/- 2 mm (range, 7-16 mm) and 18 +/- 3 mm (range, 12-24 mm), respectively. The average radius of curvature of the RNU was 15 +/- 0 mm (range, 15-16 mm). The radius of curvature did not change significantly when comparing the proximal and distal aspect of the RNU. The RNU was rotated 33 degrees +/- 2 degrees (range, 31 degrees to 38 degrees) externally relative to the transverse plane of the ulna. The average depth of the RNU at its deepest point was 2.2 +/- 0.4 mm (range, 1.5-2.7 mm). The depth decreased from proximal to distal, being most shallow distally. The depth changed by an increase of the radius of curvature, as well as by rotation in the frontal plane. Conclusions The RNU anatomy was variable, generally extending laterally from proximal to distal. This suggests that a radial head implant should taper from proximal to distal to optimize contact at the RNU. Copyright (C) 2019 by the American Society for Surgery of the Hand. All rights reserved.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Wegmann, Kilian UNSPECIFIED UNSPECIFIED UNSPECIFIED Knowles, Nikolas UNSPECIFIED UNSPECIFIED UNSPECIFIED Lalone, Emily UNSPECIFIED UNSPECIFIED UNSPECIFIED Mueller, Lars P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Athwal, George S. UNSPECIFIED UNSPECIFIED UNSPECIFIED King, Graham J. W. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-143219
DOI:	10.1016/j.jhsa.2018.10.010
Journal or Publication Title:	J. Hand Surg.-Am. Vol.
Volume:	44
Number:	9
Date:	2019
Publisher:	W B SAUNDERS CO-ELSEVIER INC
Place of Publication:	PHILADELPHIA
ISSN:	1531-6564
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language PROXIMAL RADIOULNAR JOINT; MEAN FOLLOW-UP; HEAD PROSTHESIS; FRACTURES; FIT; BIOMECHANICS; REPLACEMENT; MORPHOLOGY; OUTCOMES; DESIGN Multiple languages Orthopedics; Surgery Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/14321