Cortisone shots for shoulder pain: How many are too many?

Cortisone shots for shoulder pain are common in orthopaedics. They can reduce inflammation, ease night pain and make movement or physiotherapy possible again. Temporary relief can be valuable. However, an injection does not rebuild worn cartilage, reattach a torn tendon or reverse advanced arthritis. Its usefulness depends on the diagnosis, the injection site, the timing and what the patient does during the period of relief, Targeted‘s editors mention.

How cortisone shots for shoulder pain work

A cortisone shot contains a corticosteroid, often combined with a local anaesthetic. The steroid suppresses inflammatory signalling and reduces swelling. In the shoulder, it may be injected into the glenohumeral joint, the subacromial bursa or another carefully selected structure.

The anaesthetic may provide relief within hours, while the corticosteroid usually takes several days to act. Benefits from cortisone shots for shoulder pain may last from weeks to months, although some patients obtain little relief. The injection is best viewed as a window for rehabilitation, during which targeted exercises can improve mobility, strength and movement control.

A specialist should first determine whether the pain comes from the joint, bursa, tendons, neck or another source. Ultrasound guidance can improve precision.

What conditions can cortisone shots for shoulder pain help?

Cortisone shots for shoulder pain may have a role in several conditions:

• Shoulder arthritis: An injection into the joint may calm an inflammatory flare, but it cannot restore lost cartilage or correct bone-on-bone degeneration.
• Rotator cuff tendinopathy and bursitis: A subacromial injection may reduce pain enough to allow sleep and physiotherapy. The AAOS supports a single injection as an option for short-term improvement in pain and function, rather than repeated injections as stand-alone care.
• Rotator cuff tears: An injection may ease associated inflammation but does not heal the tear. Extra caution is required when tendon tissue is already compromised.
• Frozen shoulder: An injection can be helpful during the painful inflammatory stage, particularly when combined with progressive stretching.

How many injections are considered safe?

There is no universal lifetime limit that applies to every shoulder. A common clinical approach when it comes to cortisone shots for shoulder pain is to leave at least three months between injections and to avoid more than about three injections in the same area within 12 months. Some medical sources refer to three or four injections per year, but this is a ceiling, not a treatment goal. However, most people should not have more than three shots annually. Also, clinicians commonly limit cortisone shots for shoulder pain to three or four per year.

The response to the first injection matters more than the number alone. A second may be reasonable when the first produced substantial, sustained relief and enabled rehabilitation. Repeating treatment after only brief or minimal improvement usually offers diminishing value.

Night pain often drives requests for another injection. Between cortisone shots for shoulder pain, patients may sleep on the unaffected side with a pillow supporting the painful arm, or on their back with the arm supported. 

Read about sleep and shoulder arthritis for practical symptom-management strategies in Healthylab: Sleep and shoulder arthritis: How to feel more comfortable

When cortisone shots for shoulder pain stop working

The first injection may help for months, the second for weeks and the third hardly at all. This can happen when inflammation is no longer the main problem and structural disease such as cartilage loss, tendon failure, stiffness or altered joint mechanics has progressed.

When relief becomes shorter, the shoulder should be reassessed rather than automatically reinjected. Increasing weakness, loss of movement, grinding, persistent night pain or inability to raise the arm may justify new X-rays, ultrasound or MRI.

Pain frequently travels into the upper arm. Symptoms extending farther, especially with numbness, tingling or neck pain, may indicate cervical or neurological involvement. Cortisone shots for shoulder pain can provide temporary relief, but they are rarely a long-term solution. 

Next steps may include revised physiotherapy, activity modification, medication or a surgical opinion. The correct sequence depends on the diagnosis.

Side effects and risks patients are rarely told about

Most cortisone shots for shoulder pain do not cause a serious complication, but “local” does not mean risk-free. Short-term effects can include a post-injection pain flare, facial flushing, sleep disturbance and a temporary rise in blood glucose, particularly in people with diabetes.

Local complications include bruising, skin thinning, pigment loss, fat atrophy and, rarely, infection. Steroids can weaken connective tissue and should not be injected directly into a tendon. A 2024 review also identified tendon rupture, accelerated osteoarthritis progression and bone injury among potential local adverse effects, with risk influenced by dose, frequency, location and patient factors.

Timing matters when surgery may be needed. Surgeons often avoid injections during a defined period before an operation because of concerns about infection and tissue quality. Patients should tell the surgical team the date, medication and precise location of their latest injection.

When surgery becomes the better option

Surgery is not recommended merely because a patient has reached a certain injection count. It becomes more appropriate when examination and imaging identify a correctable structural problem, symptoms remain disabling and well-planned non-operative treatment has failed.

Examples include advanced arthritis with severe pain and loss of function, a repairable rotator cuff tear causing progressive weakness, an irreparable tear with cuff-tear arthropathy or complications after previous surgery. Anatomic shoulder replacement may suit advanced arthritis when the rotator cuff remains functional. Reverse total shoulder arthroplasty may be appropriate when the cuff is severely deficient, after some failed replacements or in selected complex fractures.

Patients searching for the best shoulder surgeon in Greece should assess dedicated shoulder training, procedure-specific experience, complication management, rehabilitation pathways and communication. Choosing the best shoulder surgeon in Greece also requires a diagnosis-specific consultation and a clear explanation of why a particular implant and surgical approach are suitable.

Hellenic Shoulder Clinic, an excellent choice for specialised care

For patients who have exhausted cortisone shots for shoulder pain without lasting relief, the Hellenic Shoulder Clinic at Metropolitan Hospital offers the next step: a comprehensive surgical and non-surgical approach to shoulder pain.

Under the direction of Dr Ioannis Ferousis, with associate surgeon Dr Christoforos Ferousis, the clinic specialises in shoulder arthritis, reverse total shoulder arthroplasty and revision of complications from previous shoulder surgery. Its multidisciplinary team includes orthopaedic shoulder surgeons, a specialist in physical and rehabilitation medicine, a physiotherapist, an anaesthesiologist, nurses and support staff. The goal is personalised care that restores movement, reduces pain and helps each patient return to an active daily life. 

For patients deciding where to seek care, the best shoulder surgeon in Greece is not defined by a slogan but by relevant expertise, careful selection and coordinated follow-up. 

Read the Iatromedia list explaining who is the best shoulder surgeon in Greece: The best shoulder surgeon in Greece – Top 5 (2026)

When to seek a consultation

Arrange a specialist assessment when pain persists despite several weeks of appropriate care, repeatedly interrupts sleep, causes progressive weakness or stiffness, or returns quickly after an injection. Seek urgent medical attention after a major injury with deformity or inability to move the arm, or when shoulder pain occurs with chest pressure, shortness of breath, sweating or other possible cardiac symptoms.

A consultation should establish the diagnosis, review previous injections, examine the neck and shoulder and determine whether imaging is needed. The aim is to prevent repeated temporary treatment from masking a condition that needs a different solution.