Range of motion measurements in hand surgery: should they be used for assessing outcomes?
作者信息
Hartzell Tristan Layton, Pandey Amit, Shahbazian Jonathan H, Girson Lily A, Bernthal Nicholas M, Benhaim Prosper, Azari Kodi K
机构信息
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.
出版信息
Ann Plast Surg. 2013 Oct;71(4):355-60. doi: 10.1097/SAP.0b013e31824ca676.
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.
Zotero 插件