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Abduction and adduction of the shoulder (frontal plane). Abduction is carried out by the deltoid and the supraspinatus in the first 90 degrees. From 90-180 degrees it is the trapezius and the serratus anterior. Adduction is carried out by the pectoralis major, latissimus dorsi, teres major and the subscapularis. Horizontal abduction and ...
Shoulder anatomy, front view Shoulder anatomy, back view The rotator cuff is an anatomical term given to the group of four muscles and their tendons that act to stabilize the shoulder. [ 3 ] These muscles are the supraspinatus , infraspinatus , teres minor and subscapularis and that hold the head of the humerus in the glenoid cavity during ...
A 1999 study found for people in the F2, F3 and F4 classes in the discus, elbow flexion and shoulder horizontal abduction are equally important variables in the speed at which they release the discus.
The most important ligament involved in shoulder joint stability is the Inferior Glenohumeral Ligament. During abduction of the arm, the middle and inferior ligaments become taut while the superior ligament relaxes. The radius of curvature of the head of the humerus is greater superiorly than inferiorly, which further stretches these ligaments ...
1.1 Arm and shoulder. 1.2 Hand and wrist. 2 Lower limb. 3 Other. 4 References. ... Abduction is an anatomical term of motion referring to a movement which draws a ...
Anterograde and retrograde flow refer to movement of blood or other fluids in a normal (anterograde) or abnormal (retrograde) direction. [23] Circumduction is a conical movement of a body part, such as a ball and socket joint or the eye. Circumduction is a combination of flexion, extension, adduction and abduction.
The latissimus dorsi is responsible for extension, adduction, transverse extension also known as horizontal abduction (or horizontal extension), [1] flexion from an extended position, and (medial) internal rotation of the shoulder joint. It also has a synergistic role in extension and lateral flexion of the lumbar spine.
The shoulder that is injured is placed in a sling and shoulder flexion or abduction of the arm is avoided for 4 to 6 weeks after surgery (Brewster, 1993). Avoiding movement of the shoulder joint allows the torn tendon to fully heal. [24] Once the tendon is entirely recovered, passive exercises can be implemented.