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A clavicle fracture is a bone fracture in the clavicle, or collarbone. It is often caused by a fall onto an outstretched upper extremity, a fall onto a shoulder, or a direct blow to the clavicle. Many research projects are underway regarding the medical healing process of clavicle fractures. ==Signs and symptoms== *Pain, particularly with upper extremity movement or on front part of upper chest. *Swelling *Often, after the swelling has subsided, the fracture can be felt through the skin. *Sharp pain when any movement is made. *Referred pain: dull to extreme ache in and around clavicle area, including surrounding muscles. *Possible nausea, dizziness, and/or spotty vision due to extreme pain 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「clavicle fracture」の詳細全文を読む スポンサード リンク
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