The longevity of the ink depends on the pen, but most are about 6â8 months. If the pen dries up, you can try heating up the ballpoint part with hot water in case the rollerball is stuck. Another option is to keep the casing and purchase a refill f...
Common Causes of Foot drop. 1  Muscle disease. 2  Peroneal nerve. 3  Sciatic nerve. 4  Lumbosacral plexus. 5  L5 nerve root. 6  more common causes...Â».
Foot drop may be temporary or permanent, depending on the extent of muscle weakness or paralysis and it can occur in one or both feet.