Measurement of scapular position

da Costa BR, Armijo-Olivo S, Gadotti I, Warren S, Reid DC, Magee DJ. 
Reliability of scapular positioning measurement procedure using the palpation meter (PALM). 
Physiotherapy. 2010 Mar; 96(1):59-67.

Reliability values for measurements of the horizontal distance between the scapula and the spine were generally good for both intra-rater (ICC 0.81 to 0.89; SEM 0.56 to 1.17cm) and inter-rater (ICC 0.67 to 0.89; SEM 0.59 to 0.98cm) evaluation. 
Reliability values of measurement of depression of the acromion were also good for both intra-rater (ICC 0.72 to 0.78; SEM 0.66 to 0.79) and inter-rater (ICC 0.76; SEM 0.64) evaluation. No systematic bias was observed with Bland and Altman analysis.