GUWonder, here's a link to an article about travel for the disabled:

http://www.bootsnall.com/guides/05-0...-security.html

The TSA cannot force a person to remove a prosthetic device.

The following is from another website, but the link was out of date, so perhaps the following information is also:

"Persons with Prosthetic Devices, Casts, Body Braces

Screeners will need to see and touch your prosthetic device, cast, or body
brace as part of the screening process.

You have the option of requesting a private screening at any time during the
screening of your prosthetic device, cast, or body brace.

A screening supervisor or a lead screener will need to perform an explosive
trace detection (ETD) screening of your prosthetic device, cast, or body
brace.

The screening supervisor or lead screener will describe the ETD sampling
procedure in advance to help you along with the process.

During the screening process, the screener supervisor or lead screener
will take a swab sample from the exterior of your prosthetic device,
cast, or body brace.

This ETD screening process may require you to lift or remove some of your
clothing in order to obtain the ETD sample.

The screening supervisor or lead screener should offer you a private
screening
if clothing will need to be lifted or removed in order to obtain the ETD
sample.
You have the right to refuse the offer of a private screening; however,
you'll
need to allow the screening to be conducted publicly if you wish to proceed
beyond the security checkpoint.

You may have a companion or family member accompany you into the private
screening area (once he or she has been screened) and remain throughout the
screening process.

TSA will make every effort to have two screeners of the same gender as the
passenger being screened present during the private screening.

Please notify screeners if you need assistance during the screening process
such as a hand, arm, or shoulder to lean upon, or a chair in which to sit.

Once the screening supervisor or lead screener has determined that you do not
represent a security risk, he or she will allow you to proceed through the
checkpoint into the sterile area."

A female passenger, with an artificial leg, made a stink last fall about being forced to remove her slacks so that the TSA could "inspect" her leg.