Answer: sry i learned this when i was in fifth grade its the vascular system
Sudden impact to the joints (i.e. backward or forward force) can cause a dislocation which can either be a complete dislocation or a partial dislocation. A joint dislocation can damage adjacent structures usually by nerve and vessel impingement causing parethesias and paralysis. Manual correction of the dislocated joint is often favored.
Specialist in diagnosing and treating mental disorders who can prescribe medication