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Tennis elbow or lateral epicondylitis is a condition in which the outer part of the elbow becomes sore and tender. Tennis elbow is an acute or chronic inflammation of the tendons that join the forearm muscles on the outside of the elbow (lateral epicondyle). The forearm muscles and tendons become damaged from overuse — repeating the same strenuous motions again and again. This leads to inflammation, pain and tenderness on the outside of the elbow.〔(American Academy of Orthopedic Surgery Information )〕 Any activity, including playing tennis, which involves the repetitive use of the extensor muscles of the forearm can cause acute or chronic tendonitis of the tendinous insertion of these muscles at the lateral epicondyle of the elbow. The condition is common in carpenters and other laborers who swing a hammer or other tool with the forearm. Runge is usually credited for the first description of the condition, in 1873.〔Runge F. ''Zur Genese und Behandlung des Schreibekrampfes.'' Berliner Klin Wochenschr. 1873;10:245–248.〕 The term ''tennis elbow'' first appeared in an 1883 paper by Major called ''Lawn-tennis elbow''.〔Major HP. "Lawn-tennis elbow". ''BMJ''. 1883;2:557.〕 ==Signs and symptoms== * Pain on the outer part of the elbow (lateral epicondyle) * Point tenderness over the lateral epicondyle—a prominent part of the bone on the outside of the elbow * Pain from gripping and movements of the wrist, especially wrist extension and lifting movements * Pain from activities that use the muscles that extend the wrist (e.g. pouring a container of liquid, lifting with the palm down, sweeping, especially where wrist movement is required) Symptoms associated with tennis elbow include, but are not limited to: radiating pain from the outside of the elbow to the forearm and wrist, pain during extension of wrist, weakness of the forearm, a painful grip while shaking hands or torquing a doorknob, and not being able to hold relatively heavy items in the hand. The pain is similar to the condition known as ''golfer's elbow'', but the latter occurs at the medial side of the elbow.〔"Tennis Elbow - MayoClinic.com." Mayo Clinic Medical Information and Tools for Healthy Living - MayoClinic.com. 15 Oct. 2008. Web. 10 Oct. 2010. ()〕 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「tennis elbow」の詳細全文を読む スポンサード リンク
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