Universität zu Köln

Ries, C., Schopf, W., Dietrich, F., Franke, S., Jakubowitz, E., Sobau, C. and Heisel, C. (2015). Anatomic Reconstruction of Hip Joint Biomechanics: Conventional vs. Short-Stem Prosthesis. Z. Orthop. Unfallchir., 153 (1). S. 46 - 51. NEW YORK: THIEME MEDICAL PUBL INC. ISSN 1864-6743

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Abstract

Background: Currently, short cementless femoral stems are alternative implants to treat osteoarthritis in young patients with sufficient bone quality in order to get a more proximal load transfer. The purpose of the present study was to biomechanically compare joint reconstructions resulting from implantations of a short-stemmed and a conventional hip replacement. Methods: 100 patients (50 short-stemmed and 50 conventional) were retrospectively examined. For evaluation of biomechanical parameters standardised pre- and postoperative X-rays (pelvic AP views) were used and digitally analysed. Results: The horizontal femoral off-set increased within both groups (short: 2.0 mm and conventional: 3.3 mm), with a significant increase in the conventional group. The hip centre of rotation was significantly medialised after both procedures (short: 6.0 mm and conventional: 4.2 mm). Limb length was shorter preoperatively at the arthroplasty side, but increased thereafter (short: 2.1 mm and conventional: 2.6 mm). Compared to the native contralateral side the limb length was almost equal after THA (short: 0.7 mm and conventional: 0.8 mm). Conclusions: Our study shows that an almost anatomic reconstruction of hip joint biomechanics is possible with a short-stemmed prosthesis compared to a conventional stem, regarding limb length, centre of rotation and offset.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Ries, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Schopf, W. UNSPECIFIED UNSPECIFIED UNSPECIFIED Dietrich, F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Franke, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Jakubowitz, E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Sobau, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Heisel, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-413010
DOI:	10.1055/s-0034-1396230
Journal or Publication Title:	Z. Orthop. Unfallchir.
Volume:	153
Number:	1
Page Range:	S. 46 - 51
Date:	2015
Publisher:	THIEME MEDICAL PUBL INC
Place of Publication:	NEW YORK
ISSN:	1864-6743
Language:	German
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language ABDUCTOR MUSCLE STRENGTH; FEMORAL COMPONENT; ARTHROPLASTY; REPLACEMENT; POSITION; OFFSET Multiple languages Orthopedics Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/41301