Please choose the correct ending to complete the given sentence: Health: [header] How to unlock your knees [title] Stop all activity and rest your knee. [step] If you injured your knee during a sporting event or other activity, stop immediately and rest the knee joint. If you have some range of movement in your knee, ask someone to help you walk to the nearest safe place to sit, and rest for as long as possible.

Ending1: You could also walk with shoes for extra support if they don't hurt enough! [title] Offer some support. [step] If you're always walking around ,' hooked' your knee with a walking stick or other supportive object. Ending2: Additional movement can further damage the knee joint. [substeps] If you have no movement in your knee, visit the doctor immediately or contact emergency services, as it might be a broken or dislocated kneecap, which requires immediate medical attention. Ending3: [substeps] Aim to do a five mile (15. 2 km) walk without stopping or resting your knee joint. Ending4: [substeps] Gently supporting your knee during a sporting event requires some difficulty. It can be difficult to stand up without resting your thigh (or knee) and ankle on the ground, which will just put pressure on your knee joints.

Answer format: ending1/ending2/ending3/ending4