{"id":22949,"date":"2025-06-17T08:30:15","date_gmt":"2025-06-17T08:30:15","guid":{"rendered":"https:\/\/gaviki.com\/blog\/?p=22949"},"modified":"2025-06-17T08:30:18","modified_gmt":"2025-06-17T08:30:18","slug":"during-protraction-and-retraction-of-the-sc-joint-the-clavicle-rotates-about-its-long-axis","status":"publish","type":"post","link":"https:\/\/gaviki.com\/blog\/during-protraction-and-retraction-of-the-sc-joint-the-clavicle-rotates-about-its-long-axis\/","title":{"rendered":"During protraction and retraction of the SC joint, the clavicle rotates about its long axis"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">During protraction and retraction of the SC joint, the clavicle rotates about its long axis. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\"> True <\/p>\n\n\n\n<p class=\"wp-block-paragraph\"> False<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\"><strong>The correct answer and explanation is:<\/strong><\/mark><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Correct Answer: \u2714\ufe0f False<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">During <strong>protraction and retraction<\/strong> of the <strong>sternoclavicular (SC) joint<\/strong>, <strong>the clavicle does not rotate about its long axis<\/strong>. Instead, it <strong>glides anteriorly and posteriorly<\/strong> relative to the sternum in the <strong>transverse plane<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Let\u2019s break it down:<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Understanding the SC Joint Movements:<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>SC joint<\/strong> is a <strong>saddle-type synovial joint<\/strong> that connects the <strong>clavicle (collarbone)<\/strong> to the <strong>sternum (breastbone)<\/strong>. It is the only true joint that connects the upper limb to the axial skeleton and is highly mobile due to its structure.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The movements at the SC joint include:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Elevation and Depression<\/strong> \u2013 movement in the frontal plane.<\/li>\n\n\n\n<li><strong>Protraction and Retraction<\/strong> \u2013 movement in the transverse (horizontal) plane.<\/li>\n\n\n\n<li><strong>Axial (longitudinal) Rotation<\/strong> \u2013 occurs during <strong>arm elevation<\/strong>, not during protraction or retraction.<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Protraction and Retraction Explained:<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Protraction<\/strong>: The clavicle moves <strong>anteriorly<\/strong>, bringing the shoulder forward.<\/li>\n\n\n\n<li><strong>Retraction<\/strong>: The clavicle moves <strong>posteriorly<\/strong>, pulling the shoulder backward.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">These movements involve <strong>anterior and posterior gliding of the clavicle at the SC joint<\/strong>. The <strong>movement occurs at the articular surfaces<\/strong>, but <strong>the clavicle does not rotate around its long axis<\/strong> during these motions.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>When Does the Clavicle Rotate Around Its Long Axis?<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The clavicle rotates about its <strong>longitudinal axis<\/strong> during <strong>arm elevation (flexion or abduction above 90 degrees)<\/strong>. This axial rotation allows the <strong>acromioclavicular joint<\/strong> to maintain the scapula\u2019s alignment with the thoracic cage.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Conclusion:<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Therefore, it is <strong>false<\/strong> to say that the clavicle rotates about its long axis during <strong>protraction and retraction<\/strong>. Those motions involve translational (gliding) movements, not rotational ones.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>During protraction and retraction of the SC joint, the clavicle rotates about its long axis. True False The correct answer and explanation is: Correct Answer: \u2714\ufe0f False Explanation: During protraction and retraction of the sternoclavicular (SC) joint, the clavicle does not rotate about its long axis. Instead, it glides anteriorly and posteriorly relative to the [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-22949","post","type-post","status-publish","format-standard","hentry","category-quiz-questions"],"_links":{"self":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/22949","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/comments?post=22949"}],"version-history":[{"count":1,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/22949\/revisions"}],"predecessor-version":[{"id":22950,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/22949\/revisions\/22950"}],"wp:attachment":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/media?parent=22949"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/categories?post=22949"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/tags?post=22949"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}