Management of Acute Calcific Tendinitis of the Shoulder

Initial Conservative Management (First‑Line)

NSAIDs provide short‑term pain relief without influencing long‑term outcomes; oral and topical formulations are equally effective, with topical agents offering fewer gastrointestinal side effects. American Academy of Family Physicians recommends this approach. [2] [3] 4
Relative rest—avoid overhead and repetitive loading that reproduces pain but do not immobilize the shoulder, to prevent muscular atrophy. American Academy of Family Physicians advises continuation of non‑painful activities. [4] [5] 2
Cryotherapy using melting ice water applied with a wet towel for 10‑minute intervals reduces tissue metabolism and blunts the inflammatory response, offering acute pain relief. American Academy of Family Physicians supports this modality. [5] [2] 4
Gentle range‑of‑motion (ROM) exercises focusing on external rotation and abduction should be initiated early to prevent frozen shoulder; active ROM can be increased gradually as tolerated. International Stroke Society (referencing stroke‑related rehabilitation principles) endorses this regimen. [6] [7] 8

A single subacromial corticosteroid injection (with local anesthetic) has moderate‑quality evidence for short‑term improvement in pain and shoulder function. American Academy of Orthopaedic Surgeons notes this as a preferred second‑line option. 1
Corticosteroid injection is more effective than oral NSAIDs for acute‑phase pain relief, although it does not modify long‑term outcomes. American Academy of Family Physicians highlights this comparative benefit. [2] [3]
Injection technique: Deliver the medication into the subacromial space—not into the tendon substance—to avoid weakening the tendon. International Stroke Society recommends this anatomical target. [6] [7]

Arthroscopic excision of calcium deposits with tendon repair is indicated for patients who have failed 3–6 months of comprehensive conservative therapy. American Academy of Family Physicians cites this as the definitive surgical option. [5] [2] 3

Do not use overhead pulleys during rehabilitation, as uncontrolled abduction may exacerbate symptoms. Stroke Society warns against this practice. 8
Avoid injecting corticosteroids directly into the tendon substance, which reduces tensile strength and predisposes to spontaneous rupture; limit injections to the peritendinous or subacromial space. American Academy of Family Physicians and International Stroke Society emphasize this safety precaution. [4] [6]
Do not immobilize the shoulder completely, because prolonged immobilization leads to muscular atrophy and deconditioning; controlled tensile loading promotes collagen synthesis and proper tendon alignment. American Academy of Family Physicians stresses the importance of maintaining gentle motion. [4] [5]