I too thought of the flower pins. Be sure the buy the best quality you can afford. I have the cheaper ones and they are not as sharp. You get what you pay for with quality of pins.

I agree with Maniac - invest in good quality pins. My mom gave me some she got at a yard sale (so I don't know what brand they are) and they're awful. It's like they're covered in microscopic slivers or sandpaper or something - they feel like they grab at the fabric.

My advise is whatever style of pin you do get, make sure they're nickel-plated. They are rust-proof and glide through fabric like a hot knife through butter.

I use these all the time also! they are thin and long but works well with many layers of fabric.

The pin heads do different sizes so find the finest you can. I have had a wrist problem including thumb and I found them. Difficult to hold. If you have any small clamps try them below the seam and don't pull out until you are as close as possible to the seam. If you can put a pin in but have problem removing try a pair of pliers and grip just below the pin head.
Sorry for your injury. I hand stitched my avatar after a wrist operation and called it therapy.

I also love the flower headed pins - long, thin, and easy to grasp. I think they come in different sizes so check it out. I do love the wonder clips too but only use them for the binding.

I use regular long pins and ear plugs on the ends, a lot easier

Try poking the tip of the pin in wax - I use a small candle that I keep near my sewing machine for that. The wax helps the pin slip through the fabrics.

I use the bent safety pins fir basting my quilt sandwich-maybe those eould work for you?