Expected headings
"Arm flexion"
"Arm extension"
"Arm abduction"
"Arm adduction"
"Arm internal rotation"
"Arm external rotation"
"Circumduction"
"Circumduction is the orderly combination of shoulder flexion, abduction, extension and abduction (or the reverse) to trace a cone with the arm. It is hence produced by co-ordination of all the muscles that produce these individual movements but also relies on other joints of the pectoral girdle such and the acromioclavicular joint and scapulothoracic joint."