Clovis is when you sit down on the edge of your bed or couch and streach your legs with your toes pointed forward and bring them up till they point to the ceiling. Now the clovis part is if your feet shake or tremor while you are bringing them up. Part of it has to do with muscles that are not devoleped yet. Yes it has some to do with drop foot. When I walk with forearm crutches I have no drop foot though. Take care.