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...
The most common cause of foot drop is injury to the muscle or nerve that controls the foot.Other causes include-. 1  Paralysis of muscles of ankle and foot. 2  Nerve damage. 3  Muscle damage. 4  Nervous system disorders. 5  Multiple sclerosis. 6  Diabetes. 7  Parkinsonâs disease. 8  Tumor or stroke. 9  Muscular dystrophy.
It is necessary to know the primary cause of dropped foot.Treating the root cause improves the condition.Visit your foot doctor he/she may advise you for the following treatment-. 1  Surgery. 2  Nerve stimulation. 3  Physical therapy. 4  Braces.