A shin splint also known as tibial stress syndrome is not a single medical condition in itself rather a complication by other problems such as irritated muscles, hairline fractures of the bone or over pronation (flat foot) which is when walking the arch of the foot collapses causing tendons and muscle to overstretch. The symptoms of shin splints usually cause a dull and an aching pain in front...

The quadriceps which is located in the thighs also divided into four muscles rectus femoris, vastus lateralis, vastus medialis and the vastus intermedius. These muscles during intensive exercise can be damaged causing painful and most of the times crippling injuries like a simple strain or in severe cases a tear of the tendon. A sprain is usually caused by an imbalance between the quadriceps and...