insurance coverage?

Has anyone had insurance coverage for these braces? My doc will write a prescription for the braces (CTI does this regularly), is there a procedure in place for doing it this way with Asterisks? i.e., where do you buy them, how does reimbursement work, etc.

Also, how durable and protective is the knee cap area? Is it similar to a good quality kneeguard (like the AXO or Fox hinged kneeguards)

Thanks