Fig. 3From: Effect of manipulation technique using ultrasound-guided cervical nerve root block on range of motion at the shoulder joint in frozen shoulder: a retrospective studyManipulation procedure. The shoulder is abducted to 90°, then externally rotated to 90°, and maximally abducted from that position. The utmost care is taken not to fracture the humerus due to excessive external force. Care must also be taken not to move the humeral head forward when performing maximal abduction. If the joint capsule is too stiff to allow maximum abduction, it should not be forced and the operator should proceed to the next stepBack to article page