title: Can self-report instruments of shoulder function capture functional differences in older adults with and without a rotator cuff tear?
abstract: Rotator cuff tears (RCT) are prevalent in older individuals and may compound age-associated functional declines. Our purpose was to determine whether self-report measures of perceived functional ability are valid for older patients with RCT. Twenty five subjects participated (12M/13F; age=63.9±3.0years); 13 with RCT and 12 controls (CON). Participants completed self-report measures of shoulder function (SST, ASES, WORC) and health-related quality of life (SF-36). Isometric joint moment and range of motion (ROM) were measured at the shoulder. Relationships among functional self-reports, and between these measures and joint moment and ROM were assessed; group differences for total and subcategory scores were evaluated. There were significant correlations among self-reports (rs=0.62-0.71, p⩽0.02). For RCT subjects, ASES was associated with all joint moments except adduction (p⩽0.02); SST, ASES, and WORC were associated with abduction and external rotation ROM (p⩽0.04). For RCT subjects, SST and WORC were associated with SF-36 physical function subcategory scores (p⩽0.05). The RCT group scored worse than CON on all functional self-reports (p<0.01) and WORC and ASES subcategories (p<0.01). In conclusion, SST, ASES, and WORC demonstrate utility and discriminant validity for older individuals by distinguishing those with RCT, but this work suggests prioritizing ASES given its stronger association with functional group strength.
authors.affiliation: Department of Kinesiology, University of Waterloo, Waterloo, ON, Canada.
authors.forename: Meghan E
authors.initials: ME
authors.lastname: Vidt
authors.affiliation: Virginia Tech-Wake Forest University School of Biomedical Engineering and Sciences, Winston-Salem, NC, USA; Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC, USA.
authors.forename: Anthony C
authors.initials: AC
authors.lastname: Santago
authors.affiliation: Department of Physical Therapy, High Point University, High Point, NC, USA.
authors.forename: Eric J
authors.initials: EJ
authors.lastname: Hegedus
authors.affiliation: Department of Health and Exercise Science, Wake Forest University, Winston-Salem, NC, USA.
authors.forename: Anthony P
authors.initials: AP
authors.lastname: Marsh
authors.affiliation: Department of Orthopaedic Surgery, Wake Forest School of Medicine, Winston-Salem, NC, USA.
authors.forename: Christopher J
authors.initials: CJ
authors.lastname: Tuohy
authors.affiliation: Department of Orthopaedic Surgery, Wake Forest School of Medicine, Winston-Salem, NC, USA.
authors.forename: Gary G
authors.initials: GG
authors.lastname: Poehling
authors.affiliation: Department of Orthopaedic Surgery, Wake Forest School of Medicine, Winston-Salem, NC, USA.
authors.forename: Michael T
authors.initials: MT
authors.lastname: Freehill
authors.affiliation: Department of Biostatistical Sciences, Wake Forest School of Medicine, Winston-Salem, NC, USA.
authors.forename: Michael E
authors.initials: ME
authors.lastname: Miller
authors.affiliation: Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC, USA. Electronic address: ksaul@ncsu.edu.
authors.forename: Katherine R
authors.initials: KR
authors.lastname: Saul
mesh_terms: D000203:Activities of Daily Living; D000368:Aged; D015331:Cohort Studies; D003430:Cross-Sectional Studies; D005260:Female; D006306:Health Surveys / Q000379:methods / Q000592:standards*; D006801:Humans; D008297:Male; D008875:Middle Aged; D018482:Muscle, Skeletal / Q000502:physiology / Q000503:physiopathology; D011788:Quality of Life; D016059:Range of Motion, Articular / Q000502:physiology; D017006:Rotator Cuff / Q000502:physiology / Q000503:physiopathology; D000070636:Rotator Cuff Injuries / Q000175:diagnosis* / Q000503:physiopathology; D057566:Self Report / Q000592:standards*; D012782:Shoulder / Q000502:physiology* / Q000503:physiopathology; D012785:Shoulder Joint / Q000502:physiology / Q000503:physiopathology; D016896:Treatment Outcome
keywords: Activities of daily living; Aged; Range of motion; Rotator cuff; Self report; Strength; Upper extremity