Restricting the movement of a broken bone in your leg is critical to proper healing. To do this, you may need a splint or a cast. And you may need to use crutches or a cane to keep weight off the affected leg for six to eight weeks or longer.
(Minimums vary by location and tank size, and can range from 100-1,500 gallons.) More often, the propane company charges a fee of anywhere from $25-$250 a year but averaging around $75-$130 annually, depending on local rates, the size of the tank and whether it's aboveground or underground.
This way you can just buy the 15lb propane tank for around $16 ($1.07/lb) versus buying a 1lb tank at $3+. This is the video I watched on how to do this and the process that I used to fill these tanks: http://youtu.be/fD1CmorB_qM.