Universität zu Köln

Boese, Christoph Kolja, Frink, Michael ORCID: 0000-0002-9779-0277, Jostmeier, Janine, Haneder, Stefan, Dargel, Jens, Eysel, Peer and Lechler, Philipp (2016). The Modified Femoral Neck-Shaft Angle: Age- and Sex-Dependent Reference Values and Reliability Analysis. Biomed Res. Int., 2016. LONDON: HINDAWI LTD. ISSN 2314-6141

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Abstract

Background. The femoral neck-shaft angle (NSA) is of high importance for the diagnostics and treatment of various conditions of the hip. However, rotational effects limit its precision and applicability using plain radiographs. This study introduces a novel method to measure the femoral NSA: the modified NSA (mNSA), possibly being less susceptible against rotational effects compared to the conventional NSA. Patients and Methods. The method of measurement is described and its applicability was tested in 400 pelvis computed tomography scans (800 hips). Age-and gender-dependent reference values are given and intra-and interrater reliability are analyzed. Results. The mean age of all 400 patients (800 hips) was 54.32 years (18-100, SD 22.05 years). The mean mNSA was 147.0 degrees and the 95% confidence interval was 146.7 degrees-147.4 degrees. Differences of the mNSA between sexes, age groups, and sides were nonsignificant. The absolute difference between NSA and mNSA was 16.3 degrees (range 3-31 degrees; SD 4.4 degrees); the correlation was high (0.738; p < 0.001). Overall, the intra-and interrater reliability were excellent for the mNSA. Interpretation. We introduced a novel concept for the analysis of the neck-shaft angle. The high reliability of the measurement has been proven and its robustness to hip rotation was demonstrated.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Boese, Christoph Kolja UNSPECIFIED UNSPECIFIED UNSPECIFIED Frink, Michael UNSPECIFIED orcid.org/0000-0002-9779-0277 UNSPECIFIED Jostmeier, Janine UNSPECIFIED UNSPECIFIED UNSPECIFIED Haneder, Stefan UNSPECIFIED UNSPECIFIED UNSPECIFIED Dargel, Jens UNSPECIFIED UNSPECIFIED UNSPECIFIED Eysel, Peer UNSPECIFIED UNSPECIFIED UNSPECIFIED Lechler, Philipp UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-288374
DOI:	10.1155/2016/8645027
Journal or Publication Title:	Biomed Res. Int.
Volume:	2016
Date:	2016
Publisher:	HINDAWI LTD
Place of Publication:	LONDON
ISSN:	2314-6141
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language CLINICAL-RELEVANCE; OFFSET; RADIOGRAPHS; AGREEMENT; ROTATION; GEOMETRY Multiple languages Biotechnology & Applied Microbiology; Medicine, Research & Experimental Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/28837