What to expect from a cortisone injection for thumb arthritis

Thumb arthritis commonly affects the joint at the base of the thumb, where pinching and gripping load the hand. The clinician places cortisone into the joint or nearby painful area, sometimes using imaging to guide placement. Numbing medicine may give early relief, while the anti-inflammatory effect develops later. The injection can reduce symptoms but cannot reverse worn joint surfaces. Temporary soreness, bruising or altered sensation may occur around the injection site.

Share details of diabetes, blood-thinning medicine, allergies, skin problems and previous reactions. Rest the hand from forceful pinching, opening tight lids and heavy gripping while it is tender. A thumb support may help if prescribed. Once comfortable, return to movement and strengthening gradually, using joint-protection techniques taught by a clinician or therapist. Note which tasks become easier and whether pain returns with specific loads.

Seek advice if the thumb becomes increasingly red, hot, swollen or painful, or if fluid drains from the injection site. Urgent care is needed for widespread hives, facial swelling, breathing trouble, severe new weakness or a hand that becomes cold or changes colour. If improvement fades or gripping remains difficult, arrange review to consider splinting, therapy or another suitable option.

Ask which thumb joint is being treated, how long to limit gripping, and whether a splint or hand therapy should follow. Confirm how to manage diabetes or blood-thinning medicine and what plan applies if the injection gives little or short-lived relief.