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7 Σεπ 2024 · Protraction & Retraction. Protraction describes the anterolateral movement of the scapula on the thoracic wall that allows the shoulder to move anteriorly. In practice, this is the movement of ‘reaching out’ to something.
Protraction of the scapula occurs when the shoulder is moved forward, as when pushing against something or throwing a ball. Retraction is the opposite motion, with the scapula being pulled posteriorly and medially, toward the vertebral column.
20 Ιουλ 2023 · Flexion, or bending, involves decreasing the angle between the two entities taking part in the movement (bones or body parts). In contrast, extension , or straightening, involves increasing the respective angle.
An alternative testing position for internal and external glenohumeral joint rotation is prone with the shoulder at 90 degrees of abduction and the elbow at 90 degrees of flexion. The forearm hangs over the edge of the table.
30 Οκτ 2023 · Acting in conjunction with the pectoral girdle, the shoulder joint allows for a wide range of motion at the upper limb; flexion, extension, abduction, adduction, external/lateral rotation, internal/medial rotation and circumduction. In fact, it is the most mobile joint of the human body.
Define the different types of body movements. Identify the joints that allow for these motions. Synovial joints allow the body a tremendous range of movements. Each movement at a synovial joint results from the contraction or relaxation of the muscles that are attached to the bones on either side of the articulation.
8 Οκτ 2024 · The shoulder joint is an extremely mobile joint, with a wide range of movement possible: Extension (upper limb backwards in sagittal plane) – posterior deltoid, latissimus dorsi and teres major. Flexion (upper limb forwards in sagittal plane) – pectoralis major, anterior deltoid and coracobrachialis.
