Dr. Engle recommended her getting a knee brace that has a tension against bending and kind of assists the leg extension.  It makes perfect sense and he has  helped patients with some success.  The idea is to make the knee "think" about starting to bend and avoid the whole event. 

 He said the store there at Good Samaritan was out so we have looked at them and went to a medical equipment provider but everything we saw has no resistance to bending.  Such a device would probably be useful to others with quadriceps issues so I'm wondering if anybody has found one that works. 

I may be wrong in my few short visits here(cidpusa.org), but I perceive the focus of the site is toward the disease itself and less on tips (and devices) to live with it.  How do people get through their day, I mean open jars, lift the milk jug, turn around without falling, get in and out of the bath, wash their hair, etc.  Now that my wife has lost most strength in her hands it's not just standing up anymore.  She has a terrific attitude and has invented ways to get by, but we all need a tip now and then.  Here's a few things she has done:

Apply for a disability plate so you can park closer to shops.

Use a walker so you can support some weight on the walker and leg muscles get some relief.

If you cannot use a walker then many stores offer motorized carts for disabled shoppers.

You can find them in Target and Wal-Mart.

* Put a 2" seat cushion in her car to help getting out (A patio chair cushion from Target).

For most people with adequate strength and function, it's much easier to get up from the chair illustrated here  or an easy chair, because the body movements needed to do so are much easier on the joints and muscles the arm rests help you get out of the chair easily. Keep a bigger cushion so you can get up easily.

Place cushions on chairs and low seats so you can get around easily.

 You can also use a extra cushion on your chair or sofa and it will be easier to get up

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