If you are like me and have arm weakness from a spinal cord injury, you may do as I do and ask your spouse or caregiver to pull up your briefs and pants several times a day. I have finally discovered a way to regain some of my independence. I can still stand up with a walker. This could also work standing in front of a wheelchair.
I have exercise pulleys on a door to keep my arm strength and motion range alive. I still have a weakness when it comes to pulling up my pants all the way. I solved the problem by poking a hole in the waistband in the back of a brief. I run a piece of 1/4 X 40-inch nylon rope through the hole, then double the rope and tie a slip knot at the end.
I stand under my exercise pulley and insert the wooden handle on one end of the rope through the double slip knot loop.
I then pull down on the other end of the rope which pulls the brief or pants up, slip the wooden handle back out of the double loop, pull the slip knot loose and remove the 40-inch rope from the back of the brief or pair of pants. With briefs, a hole in the waistband is no problem but with a pair of pants, you could fashion a buttonhole in the center of the back waistband to protect the material.
This is not a perfect solution but I have found that it works and gets the job done instead of bothering my wife constantly to pull my britches up. If you come to our house to visit there still is a chance that you might accidentally get mooned. With a spinal cord injury, many Simple Things become impossible and everything takes longer to do.