Final answer:
Lateral epicondylitis is commonly known as tennis elbow, a form of tendinitis caused by repetitive motion and overuse, typically seen in sports or repetitive job activities.
Step-by-step explanation:
Lateral epicondylitis is commonly known as tennis elbow. This condition is a form of tendinitis that results from the overuse of the joint, causing microtrauma and an inflammatory response. Persons engaged in repetitive motions, particularly in jobs or sports, often develop issues such as tennis elbow, golfer's elbow, runner's knee, and jumper's knee.
Tennis elbow specifically affects the tendons in the elbow due to repetitive motions like the extension of the arm that occur during racquet sports. The articular capsule of the elbow and its intrinsic ligaments are involved, and the lateral epicondyle of the humerus is the typical site of pain and inflammation in tennis elbow.