Throbbing pain in shin when i stand up. was kicked hard in shin playing softball. when i first stand up it throbs and its hard to walk?

Bruise: The tibia( shin) bone has very little muscle covering it . Contusion( bruises) here are very common in football and other sports. This is your likely diagnosis. Immediate ice, elevation can help.Occassionally a knot or hematoma can develop next to the site of contusion and persist for a period of time.They generally resolve w/ time. Good luck !