WEBVTT 00:00:00.000 --> 00:00:02.180 (English captions by Andrea Matsumoto from the University of Michigan) 00:00:02.320 --> 00:00:08.069 The cross arm flexion test also evaluates for acromioclavicular arthritis or subluxation. 00:00:08.069 --> 00:00:11.429 Flex the shoulder to 90 degrees and adduct across body. 00:00:11.429 --> 00:00:14.519 Pain at the acromioclavicular joint is a positive test.