Universität zu Köln

Buecking, Benjamin, Boese, Christoph Kolja, Bergmeister, Verena Anna, Frink, Michael, Ruchholtz, Steffen and Lechler, Philipp (2016). Functional implications of femoral offset following hemiarthroplasty for displaced femoral neck fracture. Int. Orthop., 40 (7). S. 1515 - 1522. NEW YORK: SPRINGER. ISSN 1432-5195

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Abstract

Purpose Inadequate reconstruction of femoral offset after total hip arthroplasty (THA) is associated with unfavourable outcomes, but its importance following hemiarthroplasty for displaced femoral neck fracture is unknown. Methods Our study examined the correlation between reconstructed femoral offset and functional outcome 12 months after post traumatic hemiarthroplasty in 126 prospectively enrolled elderly patients. Rotation-corrected femoral offset (FORC), relative femoral offset (FORL) and contralateral femoral offset (FOC) were measured on anteroposterior radiographs. The Harris Hip Score (HHS) was the primary outcome measure; the timed up and go (TUG) test and Lawton instrumental activities of daily living (IADL) score were secondary outcomes. Correlations were sought using the Spearman correlation coefficient (r). Sample size was calculated using an Altman nomogram, with the power set at 80 %, the significance level of 0.05 and a standardised difference of 0.75. Results The mean reconstructed FORC was 41 mm (17-67 mm) and showed a linear relationship and excellent correlation with the FOC. At 12 months, we found a significant positive correlation between FORC and HHS (r = 0.303, p = 0.025) and IADL (r = 0.325, p = 0.013), but not TUG (r = -0.026, p = 0.863). These findings were confirmed by bivariate and multivariate correlation between FORL and functional outcome parameters. Conclusions We found a clinically relevant relationship between femoral offset and functional outcome after hemiarthroplasty in elderly patients, comparable with that of THA, for treating osteoarthritis.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Buecking, Benjamin UNSPECIFIED UNSPECIFIED UNSPECIFIED Boese, Christoph Kolja UNSPECIFIED UNSPECIFIED UNSPECIFIED Bergmeister, Verena Anna UNSPECIFIED UNSPECIFIED UNSPECIFIED Frink, Michael UNSPECIFIED UNSPECIFIED UNSPECIFIED Ruchholtz, Steffen UNSPECIFIED UNSPECIFIED UNSPECIFIED Lechler, Philipp UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-270920
DOI:	10.1007/s00264-015-2828-1
Journal or Publication Title:	Int. Orthop.
Volume:	40
Number:	7
Page Range:	S. 1515 - 1522
Date:	2016
Publisher:	SPRINGER
Place of Publication:	NEW YORK
ISSN:	1432-5195
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language TOTAL HIP-ARTHROPLASTY; GO TEST; PLAIN RADIOGRAPHS; METAANALYSIS; VALIDITY; SURGERY; MOTION; RANGE; RISK Multiple languages Orthopedics Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/27092