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Horizontal flexion (adduction): anterior movement of the distal humerus in a horizontal plane, after placement of the humerus in 90 degrees of abduction. Horizontal extension (abduction): return from horizontal adduction. May also include posterior movement of the distal humerus in horizontal plane.
Depression and protraction = anterior depression. Depression and retraction = posterior depression. The movement of the scapula along the thoracic cage also directly influences the biomechanics of the shoulder complex as a whole, and can moreover predispose the development of impingement syndrome.
Shoulder flexion. The patient will ideally be in a sitting position to avoid compression on the scapula when supine; The patient's arm is positioned with the palm facing inwards, and the forearm in the mid-position; The therapist grasps the distal humerus, close to the elbow
Therapeutic exercise is commonly used in the treatment and management of a range of shoulder disorders, is commonly advocated to address dysfunctions in mobility, posture, muscle activation, proprioception and strength and is supported by much research.
21 Μαρ 2024 · muscular activity are crucial to shoulder biomechanics. This chapter discusses the relevant anatomy, kinematics, static stability, and dynamic stability of the four main articulations. forming the shoulder complex. Clinical examples of applied biomechanics. are provided in each section.
29 Μαρ 2016 · The shoulder consists of two force couples: one is at the glenohumeral (GH) joint and the other is at the scapulothoracic articulation. A force couple is defined as two equal but oppositely directed forces acting simultaneously on opposite sides of an axis that generates rotation.
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.
