How long does the effect of a single corticosteroid injection last for shoulder periarthritis?

Jun 20, 2024 Source: Cainiu Health
Disease description:

I recently injured my shoulder, and have been experiencing persistent pain lately. After going to the hospital for an examination, I was diagnosed with periarthritis of the shoulder (frozen shoulder). The doctor recommended receiving a corticosteroid injection (block injection). May I ask how long the effect of a single block injection for shoulder periarthritis usually lasts?

Doctor's answer (1)
Dr. Xu Shuai
The duration of effect from a single steroid injection for shoulder periarthritis varies depending on the individual patient, but typically lasts from one week to one month. 1. Mechanism of action: A steroid injection involves injecting a mixture of anti-inflammatory medication and anesthetic directly into the shoulder joint cavity. This reduces inflammation and pain, and improves joint function to achieve therapeutic effects. 2. Duration of effect: The specific duration depends on the severity of the condition and the patient's response to the medication. Generally, patients with mild shoulder periarthritis may experience longer-lasting relief, while those with more severe symptoms may require more frequent treatments. 3. Recurrence and re-treatment: If pain recurs, patients may consider a second injection. However, it is important to note that steroid injections carry various complications and side effects, so frequent use is not recommended. The effectiveness duration of a single steroid injection for shoulder periarthritis varies among individuals. Patients should choose an appropriate treatment plan based on medical advice and their personal condition.