Without seeing your toe, I can't really understand what a cast would do for this. An examination might show a possible post op problem such as an underlying bone spur, nail regrowth or even a nerve entrapment.
If you are not willing to return to the doctor who did this, see another podiatrist.
Posted By Vivian Abrams DPM on June 07, 2004 at 21:14:15:
This soft padded night splint with contoured posterior shell provides passive dorsi flexion to address plantar fasciitis and achilles tendonitis. Shipped with toe wedge for additional stretch on plantar facia.