Purpose
To cross-culturally adapt and validate the Hip Outcome Score (HOS) for use in German-speaking
patients undergoing surgical treatment for femoroacetabular impingement.
Methods
After cross-cultural adaptation (German-language version of the HOS [HOS-D]), the
following metric properties of the questionnaire were assessed in 85 consecutive patients
(mean age, 33.4 years; 36 women) undergoing hip arthroscopy or surgical hip dislocation:
feasibility, reliability, internal consistency, and construct validity (correlation
with Western Ontario and McMaster Universities Arthritis Index, Oxford Hip Score,
Short Form 12, and University of California, Los Angeles activity scale). We calculated
floor and ceiling effects taking the minimal detectable change into account.
Results
The activities of daily living subscale of the HOS-D could be scored in all cases
and the sport subscale in all but one. The HOS-D scores were highly reproducible with
intraclass correlation coefficients of 0.94 for the activities of daily living subscale
and 0.89 for the sport subscale. Internal consistency was confirmed by Cronbach α
values >0.90 for both subscales. Correlation coefficients with the other measures
ranged from −0.08 (Mental Component Scale of Short Form 12) to −0.90 (Western Ontario
and McMaster Universities Arthritis Index function subscale).
Conclusions
The HOS-D is a reliable and valid self-assessment tool for patients undergoing surgical
femoroacetabular impingement treatment. By use of the HOS, comparisons between studies
and treatment regimens involving either German- or English-speaking patients are now
possible.
Level of Evidence
Level I, testing of previously developed diagnostic criteria in a series of consecutive
patients with universally applied gold standard.
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Article info
Publication history
Published online: November 12, 2010
Accepted:
July 27,
2010
Received:
January 11,
2010
Footnotes
The authors report no conflict of interest.
Identification
Copyright
© 2011 Arthroscopy Association of North America. Published by Elsevier Inc. All rights reserved.
