Aren't backpacks inconvenient when you need to get something out of it? Also, isn't it easy pickin's for a thief? There's your stuff behind you! All they've got to do is unzip it. I'd think a cross-body bag with the contents under your arm a lot safer and handier for retrieving things you need.

ByAnnie.com has several patterns for backpack purses... very cute! There are different sizes. I want to make one for myself one of these days.

If you have poor shoulder mobility, I would think a backpack is not the best bag for you... as they do take good mobility to get on and off. Also, those with back pockets, against your back, are safer for your valuable cards and cash than those with access on the front.

Here is the page from the ByAnnie site, for the full size backpack:
http://www.byannie.com/patterns/travel-handmade/got-your-back-2

And this one is for the smaller backpack, more purse size:
http://www.byannie.com/patterns/purs...s/back-at-ya-2

Why not try a bag with a cross body strap? Make it adjustable so you could shorten it and carry as a 'regular' shoulder bag if you want, but extended, it is very comfortable cross body. My kids do this whenever we are out for a full day and one day I tried it with a smaller messenger bag and fell in love with it! No constantly pulling it up, no problem when bending over and it distributed the weight very nicely.

I always use a backpack leather purse, have never made one though. It is perfect for keeping the weight centered on the body. I had a disc op. years ago, and have never carried a "regular" purse since.

I tried the Ameribag Healthy Back, but it wasn't for me. My massage therapist insisted I get a crossbody bag. I like the Vera Bradley Hipster - great size and a lot of pockets. ebay has a huge selection. The Vera Bradley site has some in solids, too. https://www.ebay.com/sch/i.html?_fro...&_sacat=169291

I love my backpack! I've been wanting one for years, with a really bad back, carrying a regular purse made it worse plus hubby is in wheelchair and I need to push him so makes it easier. There is a company online that makes horse supplies, I chose it because a friend bought one similar 10 yrs ago and it still is holding up! If your interested I can find the address, believe it's Herrshners