Nothing is proved to alter the natural course of the disease. Exercises, braces, ice or heat, and medications may be palliative.
Tennis elbow, also known as lateral epicondylitis or enthesopathy of the extensor carpi radialis origin, is an enthesopathy (attachment point disease) of the origin of the extensor carpi radialis brevis on the lateral epicondyle.[1][4] Those with tennis elbow often report pain and tenderness over the bony prominence of the lateral epicondyle, which serves as the common origin of the forearm and hand’s long extensor tendons. Symptoms range from mild tenderness to severe, persistent pain.[1][5][6] The pain may also extend into the back of the forearm.[2] Onset of symptoms is generally gradual, although they can seem sudden and be misinterpreted as an injury.[7][2][8]
Tennis elbow is generally considered idiopathic, with the exact cause and pathogenesis still unknown, though it is thought to involve tendinosis, a degenerative process of the local tendon.[9][10]
It is often stated that the condition is caused by excessive use of the muscles of the back of the forearm, but this is not supported by experimental evidence and is a common misinterpretation or unhelpful thought about symptoms.[11][2][12] It may be associated with work or sports, classically racquet sports (including paddle sports), but most people with the condition are not exposed to these activities.[1][2][13] The diagnosis is based on the symptoms and examination. Medical imaging is not particularly useful.[2][10] Signs consistent with the diagnosis include pain when a subject tries to bend back the wrist against resistance.[1]
The natural history of untreated enthesopathy is resolution over a period of 1–2 years.[14] Palliative (symptoms alleviating) treatment may include pain medications such as NSAIDS or acetaminophen (paracetamol), a wrist brace, or a strap over the upper forearm.[1][2] The role of corticosteroid injections as a form of treatment is still debated.[15] Recent evidence suggests that corticosteroid injections may delay symptom resolution.[16]
^Bunata RE, Brown DS, Capelo R (September 2007). "Anatomic factors related to the cause of tennis elbow". The Journal of Bone and Joint Surgery. American Volume. 89 (9): 1955–1963. doi:10.2106/JBJS.F.00727. PMID17768192.
^Hsieh LF, Kuo YC, Lee CC, Liu YF, Liu YC, Huang V (February 2018). "Comparison Between Corticosteroid and Lidocaine Injection in the Treatment of Tennis Elbow: A Randomized, Double-Blinded, Controlled Trial". American Journal of Physical Medicine & Rehabilitation. 97 (2): 83–89. doi:10.1097/PHM.0000000000000814. PMID28816704. S2CID24498663.