Lateral epicondylitis is caused by damage to a tendon.
Tendons connects muscles to bone. Repetitive or stressful movements of the muscles causes strain and pain at the tendon. The tendons associated with lateral epicondylitis are connected to forearm muscles. These muscles are active when you grip something, such as a tennis racquet. Actions that can cause irritation to the tendons of the elbow include:
Improper technique for hitting a tennis ball
Improper size of tennis racquet or tension of racquet strings
Improper golf swing technique or grip of golf clubs
Nirschl RP, Kraushaur BS. Assessment and treatment guidelines for elbow injuries. Phys Sportsmed. 1996;24.
Tennis elbow (lateral epicondylitis). Ortho Info—American Academy of Orthopaedic Surgeons website. Available at: https://orthoinfo.aaos.org/en/diseases--conditions/tennis-elbow-lateral-epicondylitis. Updated July 2015. Accessed November 15, 2017.
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