Why is ankle sprained easily?

Why the ankle joint is easily sprained is determined by its function and anatomical structure. When the ankle joint is plantar flexion (that is, we stand on tiptoe), the foot often turns inward, that is, the center of the foot turns inward. Due to the unique anatomical structure of the ankle joint, the ankle joint can not cooperate well at this time, and it is in an unstable state of "flexibility is greater than stability". Therefore, if we lose our balance during ankle flexion (going down stairs, going down mountains, landing after taking off, etc.). ), it is easy to cause joint varus, leading to ankle varus injury, that is, lateral ankle sprain. Statistics show that the lateral ankle sprain accounts for about 85% of the total ankle sprain. At this time, the soft tissue in the ankle joint is squeezed and hit, which leads to cartilage surface damage and synovial swelling, causing swelling and congestion around the ankle joint. If it is not treated correctly in time, the lateral support strength of ankle joint will decrease and the proprioception of joint will decrease. This will aggravate the unstable state of the ankle joint, and the ankle joint will be easily sprained again, resulting in chronic symptoms such as pain, swelling and unstable walking, as well as other joint injuries and chain reactions.