| http://www.w3.org/ns/prov#value | - Symptoms of knee sprains include: a popping or snapping sound in the knee at the time of injury pain that seems to come from within the knee, especially with movement not being able to put any weight on that leg swelling fluid behind the kneecap the knee feels loose or unstable or gives way Strains A strain means you have partly or completely torn a muscle or tendon.
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