What exactly is a 'drop foot'?

Paralysis. Drop foot is due to either a paralysis of the muscles that lift your foot or a severe weakness of that muscle group. There are multiple causes.
inability to bring. The inability to bring your foot up as you walk over it allowing the foot to slap the ground. The muscles on the top of the foot are not able to decelerate the foot. This is usually due to an intrigue to nurse come either from an intrigue to the leg or an intrigue to the back.
Muscular Weakness... Hello, Drop foot is a result of the lower leg anterior compartment muscles not firing properly. It is usually due to common fibular nerve weakness/damage, it is associated with a characteristic gait pattern.