Picture of person typing on laptop with programming code visible on the laptop screen

World class computing and information science research at Strathclyde...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including by researchers from the Department of Computer & Information Sciences involved in mathematically structured programming, similarity and metric search, computer security, software systems, combinatronics and digital health.

The Department also includes the iSchool Research Group, which performs leading research into socio-technical phenomena and topics such as information retrieval and information seeking behaviour.


Which pre-operative factors predict knee range of motion during stair walking after total knee arthroplasty?

Van der Linden, M.L. and Roche, P.A. and Rowe, P.J. and Nutton, R.W. (2008) Which pre-operative factors predict knee range of motion during stair walking after total knee arthroplasty? In: British Association for Surgery of the Knee, 2009-04-02 - 2009-04-03.

Full text not available in this repository. Request a copy from the Strathclyde author


The aim of this study was to investigate the pre-operative factors predicting the knee range of motion during stair ascending and descending a year after total knee arthroplasty. The pre-operative and one year post-operative results of fifty six patients with osteoarthritis were analysed. Range of motion during stair ascent and descent was recorded using electrogoniometry. Pre-operative measures were grouped in three different domains; the Demographic Domain with age and Body Mass Index (BMI), the Body Function Domain with knee range of motion in long sitting (ROMsit), Knee extensor moment (Mext), Pain on a Visual Analogue Scale and the stiffness component of the Western Ontario McMaster University Osteoarthritis Index (WOMAC) and thirdly the Psychosocial Domain with the Tampa scale for 'fear of movement' (TSK) and the sense of helplessness due to pain. Hierarchical Multiple Regression was used to analyse the relative importance of measures grouped into the three domain blocks on range of motion of the operated knee during stair ascent and descent. Model 1 contained domain block 1, model 2 included domain blocks 1 and 2 and model 3 included domain blocks 1, 2 and 3. Learned helplessness was a significant predicting factor for stair descent (beta -0.538, p=0.025) while for stair ascent age (beta 0.375, p=0.005) and ROMsit (beta 0.365, p=0.021) were significant predicting variables. These results show that postoperative stair ascent and descent are predicted by different pre-operative factors. For stair ascent the demographic factors age and function factor ROM are important, while for stair descent, only the addition of psychosocial factors in model 3 resulted in a significant change. These results indicate that treatment of patients with end-stage osteoarthritis should not only be aimed at improving range of motion of the knee but should also take into account psychosocial variables such as a sense of helplessness due to pain.