The four most common badminton injuries — rolled ankles, lunge-related knee strain, rotator-cuff shoulder overuse, and tennis elbow — and how to prevent each with strengthening, technique fixes and sensible training load. Practical: how to tape an ankle, when to see a physio, why over-tensioned strings cause more elbow pain than backswings, and the lunge alignment that saves knees. Not medical advice, but a player's flag for patterns that quietly end most club careers.