On average, a pilot license takes around 60 hours to complete. The costs associated with earning a pilot license vary depending on the type of pilot license, number of training hours and other factors.
A lumbar, or lower back, disc herniation can cause leg pain and weakness. The University of Maryland Medical Center states that lumbar disc herniations---a protrusion of part of the spinal disc into the spinal canal or intervertebral foramen---are most common among young and middle-aged adults.
Knee problems rarely affect only the knee. There are three categories of knee problems that can cause lower leg pain: sudden acute injuries, overuse injuries and chronic diseases. If you experience chronic or sudden leg or knee joint pain, consult your physician for treatment.