MUSCLE PHYSIOLOGY

Detailed explanation-1: -The ankle rolls outward, whilst the foot turns inward causing the lateral ligament to stretch and tear. When a ligament tears or is overstretched its previous elasticity and resilience rarely returns back to normal.

Detailed explanation-2: -A sprain is usually caused by the joint being forced suddenly outside its usual range of movement and the inelastic fibres are stretched through too great a range. For example, excessive inversion of the ankle can cause the lateral ankle ligaments, primarily the anterior talofibular ligament, to rupture.

Detailed explanation-3: -Mechanism of Injury If there is a severe in-turning or out-turning of the foot relative to the ankle, the forces cause the ligaments to stretch beyond their normal length. If the force is too strong, the ligaments can tear. You may lose your balance when your foot is placed unevenly on the ground.

Detailed explanation-4: -Sprains are caused when a joint is forced to move into an unnatural position. For example, “twisting” one’s ankle causes a sprain to the ligaments around the ankle.