Universität zu Köln

van Ochten, Johannes H. M., Arbab, Dariusch ORCID: 0000-0002-3752-6175, Eysel, Peer and Koenig, Dietmar P. (2018). Long - term survivorship and clinical results of the navigated withdrawn ASR (TM). J. Orthop., 15 (3). S. 869 - 874. AMSTERDAM: ELSEVIER SCIENCE BV. ISSN 0972-978X

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Abstract

Introduction: Primary goals of the study were to present the mid - to long - term survivorship and clinical, radiological and metal serological results of the first stem - navigated ASR (TM) resurfacing at our clinic. Secondary goals were to determine the influence of stem - navigation on the outcome and risk factors for revision in our cohort. Methods: From Mai 2006 to Mai 2009 46 ASR (TM) resurfacing hip systems have been implanted in 43 patients with a median age of 55 years. At final follow - up (33 implants with a mean follow - up of 89,6 months) guidelines were followed and HHS and HOOS were completed. Inclination, NSA and SSA were measured on radiographs and signs of loosening were graded. Risk factors for revision were compared in the non - revision and revision group. Results: Mean cumulative survival of the prosthesis after 99,9 Months was 81,8%. At final follow - up 8 revisions were performed. Median HHS was 97, HOOS was 87,2. Four prostheses showed signs of loosening and nine heterotopic ossifications. All shaft components, except one, were placed in minimal valgus position to avoid risk for fracture. Age and diameter of the femoral component were significantly different between the non - revision and revision group. Discussion: Survivorship is comparable to numbers found in other studies. Patients with complete final follow up in general had good objective and subjective scores and few signs of loosening in the radiological follow - up. Navigation might have a positive effect on reduction of risk for fracture. Age and diameter of the femoral component seem to influence the outcome.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code van Ochten, Johannes H. M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Arbab, Dariusch UNSPECIFIED orcid.org/0000-0002-3752-6175 UNSPECIFIED Eysel, Peer UNSPECIFIED UNSPECIFIED UNSPECIFIED Koenig, Dietmar P. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-174596
DOI:	10.1016/j.jor.2018.08.013
Journal or Publication Title:	J. Orthop.
Volume:	15
Number:	3
Page Range:	S. 869 - 874
Date:	2018
Publisher:	ELSEVIER SCIENCE BV
Place of Publication:	AMSTERDAM
ISSN:	0972-978X
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language HIP RESURFACING ARTHROPLASTY; SURFACE REPLACEMENT; RISK-FACTORS; METAL; PSEUDOTUMORS; IMPLANTS; COMPONENTS; PLACEMENT; ACCURACY; REVISION Multiple languages Orthopedics Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/17459