Nghĩa của : SPRAINED ANKLETừ điển: GOOGLE * trật mắt cáDịch lại Từ điển: Anh - Anh * break in the ankle, twist of one's ankle Xem thêm: SPOUTS, SPRAGGED, SPRAGGING, SPRAGS, SPRAGUE, SPRAINED, SPRAINED HIS ANKLE, SPRAINING, SPRAINS, SPRATLY ISLANDS, SPRATS, SPRAWLED, SPRAWLERS, SPRAWLS, SPRAY AND WIPE, Signs and symptomsEditKnowing the symptoms that can be experienced with a sprain is important in determining that the injury is not really a break in the bone. When a sprain occurs, hematoma occurs within the tissue that surrounds the joint, causing a bruise. White blood cells responsible for inflammation migrate to the area, and blood flow increases as well.[1] Along with this inflammation, swelling and pain is experienced. The nerves in the area become more sensitive when the injury is suffered, so pain is felt as throbbing and will worsen if there is pressure placed on the area. Warmth and redness are also seen as blood flow is increased. Also there is a decreased ability to move the joint.[citation needed]
Movements – especially turning, and rolling of the foot – are the primary cause of an ankle sprain.[2] The risk of a sprain is greatest during activities that involve explosive side-to-side motion, such as tennis, skateboarding or basketball. Sprained ankles can also occur during normal daily activities such as stepping off a curb or slipping on ice. Returning to activity before the ligaments have fully healed may cause them to heal in a stretched position, resulting in less stability at the ankle joint. This can lead to a condition known as Chronic Ankle Instability (CAI), and an increased risk of ankle sprains.[citation needed] The following factors can contribute to an increased risk of ankle sprains:
Ankle sprains occur usually through excessive stress on the ligaments of the ankle. This can be caused by excessive external rotation, inversion or eversion of the foot caused by an external force. When the foot is moved past its range of motion, the excess stress puts a strain on the ligaments. If the strain is great enough to the ligaments past the yield point, then the ligament becomes damaged, or sprained.[3][4] |