{"id":8939,"date":"2021-11-25T11:26:44","date_gmt":"2021-11-25T10:26:44","guid":{"rendered":"https:\/\/www.physiotutors.com\/?post_type=wiki&p=8939"},"modified":"2021-11-25T11:26:44","modified_gmt":"2021-11-25T10:26:44","slug":"scapulohumeral-rythm","status":"publish","type":"wiki","link":"https:\/\/www.physiotutors.com\/wiki\/scapulohumeral-rythm\/","title":{"rendered":"Scapulohumeral Rhythm"},"featured_media":8943,"template":"","class_list":["post-8939","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"sections":[{"acf_fc_layout":"page-header-detail-page","background":{"background_image":8943,"background_image_alt_text":"Scapulohumeral Rhythm"},"heading":"Scapulohumeral Rhythm | Scapular Dyskinesis Assessment |SICK Scapula","subheading":"Shoulder Assessment","content_editor":"","button_type":"url","button_label":"Check our shop","button_style":"button-five","button_internal_link":4646,"button_anchor":"","button_url":"https:\/\/study.physiotutors.com\/course\/rotator-cuff-related-shoulder-pain\/","button_file":"","label":""},{"acf_fc_layout":"submenu","links":[{"button_type":"anchor","button_label":"Learn","button_internal_link":null,"button_anchor":"section-number-3","button_url":"","button_file":null},{"button_type":"anchor","button_label":"Online Course","button_internal_link":null,"button_anchor":"section-number-4","button_url":"","button_file":null},{"button_type":"anchor","button_label":"Reviews","button_internal_link":null,"button_anchor":"section-number-5","button_url":"","button_file":null}],"dropdown_label":"Go to","button_right":{"button_type":"internal_link","button_label":"Become a member","button_style":"button-three","button_internal_link":16662,"button_anchor":"","button_url":"","button_file":""},"button_description":"Find this wiki on the Physiotutors platform"},{"acf_fc_layout":"content-content","section_options":{"vertical_alignment":"top","column_right_box":false,"column_left_width":"col-12 col-lg-4 offset"},"column_left":{"content_editor":"

Learn<\/h4>"},"column_right":{"content_editor":"

Scapulohumeral Rhythm | Scapular Dyskinesis Assessment |SICK Scapula<\/h2>\nThe scapulohumeral rhythm refers to the coordinated movement of the humerus, scapula, and clavicle to achieve full abduction or elevation.\n<\/span>It has to be said that this rhythm can vary in different individuals and authors have different views about the exact degrees of each movement. Therefore it is important to compare both sides with each other. <\/span>A disturbed scapulohumeral rhythm can give you an idea about pathology because the dynamic functioning of the scapular or humeral stabilizers is impaired in case of dysfunction.<\/span>\n\nThe rhythm can be divided into three different phases during abduction:<\/span>\n
\n\n[embed]https:\/\/www.youtube.com\/watch?v=kkNnc6ssbPI[\/embed]\n\n<\/div>\n
    \n \t
  1. Setting phase of the scapula: With the first 30\u00b0 of abduction, the scapula shows minimal movement, while the clavical elevates between 0\u00b0-5\u00b0 at the SC and AC joint.\nAfter the first 30\u00b0 of abduction, the humerus and the scapula move in a relation of 2:1.\nSo during phase 2<\/li>\n \t
  2. The humerus abducts 40\u00b0, while the scapula laterally rotates 20\u00b0 with minimal protraction or elevation. The clavicle elevates 15\u00b0 because of scapular rotation and begins to rotate posteriorly.<\/span><\/li>\n \t
  3. In Phase 3: The humerus abducts 60\u00b0 and laterally rotates 90\u00b0 to avoid impingement between the greater tuberosity of the humerus and the acromion process, while the scapula laterally rotates another 40\u00b0 and begins to elevate. The clavicle rotates 30-50\u00b0 posteriorly and elevates another 15\u00b0. In reality, this is only a 5-8\u00b0 rotation relative to the acromion because of scapular rotation. <\/span>The total amount of 60\u00b0 of lateral rotation of the scapula during phases 2 and 3 is made possible by 20\u00b0 of motion at the AC joint and 40\u00b0 of movement at the SC joint.<\/li>\n<\/ol>\nIt is important to watch the scapulohumeral rhythm through the ascending as well as the descending phase because weakness of muscles that control the scapula is more evident in the descending phase and a jump of the scapula may occur if control is lost.\n\nWe are talking about a reverse scapulohumeral rhythm if we see that the scapula moves more than the humerus, which can be seen in frozen shoulder for example.<\/span>\n\n \n\n[cta]\n"}},{"acf_fc_layout":"content-content","section_options":{"vertical_alignment":"top","column_right_box":false,"column_left_width":"col-12 col-lg-4 offset"},"column_left":{"content_editor":"

    References<\/h4>"},"column_right":{"content_editor":"Kirby K, Showalter C, Cook C. Assessment of the importance of glenohumeral peripheral mechanics by practicing physiotherapists. Physiotherapy Research International. 2007 Sep;12(3):136-46.<\/a>"}},{"acf_fc_layout":"cta-image-v2","layout":"","background":"transparent","heading":"","content_editor":"

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