what does shoulder mdi mean?
<answer> Multidirectional Instability of the Shoulder is defined as generalized laxity of the joint due to increased mobility and joint weakness. <context> What is Multidirectional Instability of the Shoulder? MDI of the shoulder is defined as generalized laxity (looseness) of the joint due to increased mobility and joint weakness. The shoulder joint may slip in and out of its socket in a forward (anterior), backward (posterior), or downward (inferior) direction.