Not every ankle injury that lingers is a simple sprain. If pain stays sharp, keeps swelling, or changes how you walk, the real problem may be a different structure taking too much force.
If your ankle still aches, swells, or feels stiff weeks after a sprain, the ligament may have healed while your ability to move and share force never fully recovered.
If your ankle keeps rolling or feels unstable, the problem is usually not just a loose ligament. It is a force, timing, and control problem that never fully recovered after the sprain.