Which of the following conditions might indicate the need for immediate medical attention?

Bone deformity is a condition that typically requires immediate medical attention because it often signifies a serious injury, such as a fracture or dislocation. The visible misalignment of the bone could indicate damage to surrounding tissues, blood vessels, and nerves, which might need urgent intervention to prevent further complications. Immediate assessment by a medical professional can help ensure proper treatment, reduce the risk of long-term complications, and facilitate appropriate management of the injury.

In contrast, minor swelling, pain after exercise, and muscle tightness can generally be managed with conservative measures such as rest, ice, compression, and elevation. While these conditions may warrant medical evaluation if they persist or worsen, they typically do not signify the same level of urgency as a bone deformity.