How long does a cortisone injection take to work for thumb arthritis?

Cortisone is placed near the painful thumb joint to settle inflammation. Local anaesthetic may numb the area briefly, followed by soreness as that effect fades. The anti-inflammatory response may then become clearer over the next several days.

The injection can make pinching and gripping more comfortable, but it does not reverse cartilage wear or correct changes in the joint. Relief may be partial or temporary, particularly when everyday use continues to irritate the thumb base.

Use the hand according to post-injection instructions. Avoid forceful pinching, opening tight lids, and prolonged gripping until the clinician says these activities are appropriate. A thumb-supporting splint may reduce joint strain if recommended.

Notice which tasks improve and whether swelling, tenderness, or grip function changes. If the response is limited, a clinician may discuss hand therapy, activity adjustments, medication options, or another approach suited to the joint.

Get prompt medical advice for worsening redness, warmth, swelling, drainage, fever, severe escalating pain, or an allergic reaction. Contact the treating team for new weakness, persistent numbness, or a thumb that becomes difficult to move after the procedure.

Ask which joint was injected, when to resume gripping and exercise, whether a splint would help, how long to monitor the response, and what the next step should be if pain returns or daily pinching remains difficult.