People Also Ask About Shoulder Injection Cortisone
- Is a shoulder cortisone injection safe?
- How long does a shoulder injection cortisone last?
- Where is cortisone injected in the shoulder?
- Do cortisone injections help rotator cuff tears?
What is a Cortisone Injection in the Shoulder?
A cortisone injection is an anti-inflammatory treatment combining corticosteroid medication with a local anaesthetic. When used around the shoulder, cortisone can reduce swelling in the subacromial bursa or joint capsule. This reduction in irritation may ease pain and allow more comfortable movement.
For persistent bursitis, a shoulder injection cortisone may provide short-term relief.
It is important to note that a cortisone injection shoulder does not repair a tendon tear. Instead, it aims to create a temporary window of reduced pain so rehabilitation can progress.
Common Conditions That May Respond to Cortisone
Are Shoulder Cortisone Injections Safe?
When used appropriately and infrequently, cortisone injections are generally safe. However, they must be placed in the right tissue. Injecting a tendon directly is avoided because corticosteroids may weaken tendon structure.
For this reason, most clinicians prefer ultrasound-guided bursal injections to maximise accuracy and reduce risk.
What the Research Shows
- van Doorn et al. 2021 reported that corticosteroid injections can be useful after simpler care has failed, but should be used judiciously.
- Puzzitiello et al. 2020 highlighted potential adverse effects of corticosteroids on rotator cuff tendon structure.
- Goulart et al. 2022 found that subacromial injections provide short-term pain relief for rotator cuff–related pain.
- Desmeules et al. 2025 reinforced the importance of rehabilitation alongside injection therapy.
- ElMeligie et al. 2022 showed strong outcomes for ultrasound-guided bursal injections.
When Should You Consider a Shoulder Injection Cortisone?
You may consider an injection when:
- pain severely restricts shoulder movement
- you cannot tolerate your exercises due to inflammation
- sleep is disrupted by bursitis or impingement pain
- you have completed at least 4–6 weeks of guided rehabilitation
What Happens During the Injection?
Your clinician will typically use ultrasound to guide the needle into the bursa or joint space, ensuring accuracy and safety. A small amount of corticosteroid and anaesthetic is delivered. Many people feel short-term numbness from the anaesthetic, followed by reduced inflammation over several days.
Patients are usually advised to rest the shoulder for a few days before gradually restarting their rehabilitation program.
Post-Injection Rehabilitation
A cortisone injection works best when paired with targeted physiotherapy. Once pain settles, your physiotherapist will progress exercises to build strength, control, and shoulder mechanics.
Your treatment plan may include:
- rotator cuff strengthening
- scapular control exercises
- thoracic and shoulder mobility work
- ergonomic and activity-modification advice
Your physiotherapist will guide you on whether a shoulder cortisone injection fits into your recovery plan.
Risks and Limitations of a Cortisone Injection Shoulder
- temporary pain flare for 24–48 hours
- skin thinning or lightening near the injection site
- rare infection risks
- reduced tendon strength with repeated injections
Do Cortisone Injections Fix Rotator Cuff Tears?
No — cortisone injections help manage pain, not repair tendon tissue. Tears require a structured strengthening program, and severe tears may need further medical review.
Conclusion
A shoulder injection cortisone may help reduce short-term pain from bursitis or rotator cuff irritation, especially when inflammation limits rehabilitation. However, long-term improvement relies on physiotherapy, strength development, and correcting the underlying cause of your shoulder pain. For personalised assessment and advice, book an appointment with a PhysioWorks physiotherapist.
When to Seek Professional Advice
If shoulder pain limits work, sport, or sleep, a physiotherapist can assess your movement, diagnose the cause, and help determine whether a shoulder injection cortisone is appropriate.
