Locking from the Knee – A knee that locks or receives trapped in a particular placement may reveal a meniscal tear or unfastened bodies (little fragments of bone or cartilage) inside the joint. MRI (Magnetic Resonance Imaging): An MRI uses strong magnets and radio waves to make in depth pics https://www.theorthopaedicandpainpractice.com/what-are-tibial-plateau-fractures/