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Circumduction involves circular joint movement. Pronator teres is a shoulder muscle not listed. The rotator cuff stabilizes the shoulder joint.
Circumduction is a type of joint movement where the end of a bone moves in a circular motion around a fixed point. It involves flexion, extension, abduction, and adduction in succession. An example of this movement is seen at the shoulder joint when performing arm circles.
The muscle of the shoulder that is not mentioned in the options provided is the Pronator teres. This muscle is actually located in the forearm and is involved in pronation of the forearm and flexion of the elbow.
The rotator cuff is formed by the tendons of the subscapularis, supraspinatus, infraspinatus, and teres minor muscles. Its importance lies in providing stability to the shoulder joint, aiding in shoulder movements, and preventing dislocations.
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