Shin splint is a term that common people use to describe the pain in the lower part of the shin bone. However, since the pain on the shin bone can differ depending on where it comes from, the correct medical term for shin splints is Medial Tibia Stress Syndrome (MTSS). MTSS is the pain and discomfort from the inside of the tibia due to stress on the bone. It may be a sharp pain when touching that tender area or an ache when exercising and after. Typically, the pain ignites when there is an activity and stops when resting.