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Range of Motion Measurements in Hand Surgery: Should They Be Used for Assessing Outcomes?
MedLine Citation:
PMID:  23407249     Owner:  NLM     Status:  Publisher    
PURPOSE: The purpose of the study was to assess how context influences range of motion measurements in hand surgery. METHODS: One hundred seventy-five consecutive patients presenting to a hand surgery clinic were evaluated over 7 sessions. Passive and active motion were measured with a goniometer and by visual estimation. The affected joint was measured by 3 different examiners-one hand surgeon and 2 research assistants (RAs). Measurements by the RAs were performed under the pretense of imaginary project titles and purposes. RESULTS: Range of motion measurements were easily influenced. As the invented project's purpose became more specific and dependent on physician intervention, the bias became more pronounced. Measurements performed under construed project titles that promoted surgical intervention garnered outcomes that supported surgery (P < 0.01). Conversely, when the manufactured study's intent was to find support in conservative treatment, this outcome could also be generated (P < 0.01). DISCUSSION: Range of motion measurements can easily be influenced by the context of the study, even in seemingly blinded examiners. Reliable range of motion measurements can only be made when the examiner has no knowledge of the study's intent.
Tristan Layton Hartzell; Amit Pandey; Jonathan H Shahbazian; Lily A Girson; Nicholas M Bernthal; Prosper Benhaim; Kodi K Azari
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-2-12
Journal Detail:
Title:  Annals of plastic surgery     Volume:  -     ISSN:  1536-3708     ISO Abbreviation:  Ann Plast Surg     Publication Date:  2013 Feb 
Date Detail:
Created Date:  2013-2-14     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7805336     Medline TA:  Ann Plast Surg     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
From the *Department of Orthopedic Surgery, David Geffen School of Medicine at UCLA; †Department of Orthopedic Surgery, University of California, Los Angeles; and ‡Department of Orthopedic Surgery, University of Southern California, Los Angeles, CA.
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