Aalund, Peter K2; Larsen, Kristian3; Hansen, Torben Bæk5; Bandholm, Thomas Quaade4
1 Department of Clinical Medicine - Ortopædkirurgisk afdeling, Holstebro, Department of Clinical Medicine, Health, Aarhus University2 Department of Occupational Therapy and Physiotherapy, Holstebro Regional Hospital, Holstebro, Denmark.3 Ortopædkirurgisk Afdeling E, THG, Faculty of Health Sciences, Aarhus University, Aarhus University4 2012 Undervisningsudvalg5 Department of Clinical Medicine - Ortopædkirurgisk afdeling, Holstebro, Department of Clinical Medicine, Health, Aarhus University
which measure is most closely associated with performance-based and self-reported function?
OBJECTIVE: (s): To investigate which of the two muscle-impairment measures for the operated leg, normalized knee extension strength or leg press power, is more closely associated to performance-based and self-reported measures of function shortly following total knee arthroplasty (TKA). DESIGN: Cross-sectional, exploratory study. SETTING: Laboratory at a regional hospital. PARTICIPANTS: Thirty-nine individuals with an average age of 65.5±10.3 yrs, who all had unilateral TKA 28 days prior. INTERVENTIONS: None. MAIN OUTCOME MEASURES: The patients performed maximal isometric knee extensions and dynamic leg presses to determine their body-mass normalized knee extension strength and leg press power, respectively. The 10-m fast speed walking and 30-s chair stand tests were used to determine performance-based function, while the Western Ontario McMaster University Osteoarthritis Index (WOMAC) and Oxford Knee scores were used to determine self-reported function. RESULTS: Normalized leg press power was more closely associated to both performance-based (r=.82, P
Archives of Physical Medicine and Rehabilitation, 2013, Vol 94, Issue 2, p. 384-90