No specific movement direction or method of measurement was consistently associated with high or low reliability. Inter-rater reliability (Kappa) of measurements of physiological end-feel ranged from poor (–0.13, 95% CI –0.48 to 0.22) for extension ( Currier et al 2007) to moderate (0.52, 95% CI 0.08 to 0.96) for the Scour test ( Sutlive et al 2008). Both studies investigating reliability of end-feel measurements used symptomatic participants ( Currier et al

2007, Sutlive et al 2008). Knee (n = 7): Two studies ( Cibere et al 2004, Watkins et al 1991) fulfilled all criteria for internal validity. Cibere et al (2004) demonstrated almost perfect inter-rater reliability (Kappa 0.88) for rheumatologists using a goniometer to measure passive Birinapant physiological range of extension in patients with knee osteoarthritis. Watkins and colleagues (1991) reported acceptable reliability for physiotherapists using either vision of a goniometer to measure physiological range of flexion and extension in symptomatic participants. In the study by

selleck chemical Fritz and colleagues (1998), acceptable reliability was also reached. Inter-rater reliability of measurements of passive physiological range of motion ranged from Kappa –0.02 for measuring extension before standardisation training ( Cibere et al 2004) to ICC 0.97 for physiotherapists using vision to measure flexion in symptomatic participants

( Fritz et al 1998). Measuring physiological range of flexion in supine with the hip in 90 deg flexion consistently yielded acceptable reliability regardless of the method of measurement. Inter-rater reliability (Kappa) of measurements of physiological end-feel ranged from poor (–0.01, 95% CI –0.36 to 0.35) for flexion to moderate (0.43, 95% CI –0.06 to 0.92) for extension ( Hayes & Petersen 2001). Both studies investigating reliability of end-feel measurements used symptomatic participants ( Currier et al 2007, Hayes and Petersen 2001). Ankle-foot-toes (n = 5): One study ( Smith-Oricchio and Harris 1990) fulfilled others all criteria for external validity. In this study, unacceptable inter-rater reliability was demonstrated by physiotherapists using a goniometer to measure passive physiological range of ankle inversion (ICC 0.42) and eversion (ICC 0.25) in symptomatic participants. In the study by Diamond and colleagues (1989), acceptable estimates of reliability were reached for measurements of physiological range of ankle dorsiflexion, inversion, and eversion in diabetic patients by well-trained physiotherapists using a goniometer. These estimates could have been underestimated due to instability of characteristics of raters. Inter-rater reliability (ICC) of measurements of passive physiological range of motion ranged from 0.