Frequently, multiple injections are required for comprehensive treatment of the patient. Typically, patients have multiple trigger points, and 3 sets of injections are required; however, it has been this author's observation that administration of up to 10 rounds of trigger point injections may be necessary. Each week, the patient may return with a new "worst spot. Tendon and joint injections generally are limited to no more than 3 in 1 joint per calendar year because of the potential for mechanical disruption of the joint space and structures.
Lewis M, Hay EM, Paterson SM, Croft P. Local steroid injections for tennis elbow: Results from a randomized controlled trial. Assendelft WJ, Hay EM, Adshead R, Bouter LM. Corticosteroid injections for lateral epicondylitis: Corticosteroid injections, physiotherapy, or a wait-and-see policy for lateral epicondylitis: Bisset L, Beller E, Jull G, Brooks P, Darnell R, Vicenzino B. Mobilisation with movement and exercise, corticosteroid injection, or wait and see for tennis elbow: Bellamy N, Campbell J, Robinson V, Gee T, Bourne R, Wells G.