Hi Christine -Sorry to hear about your hand problems.
I had problems with the fingers getting stuck 6 years ago, referred to a hand surgeon who did a procedure called a lateral band re-alignment which basically means releasing the tendons and re-aligning them. I had 3 fingers opened up at one time under a nerve block anaesthesia.
Be prepared for a huge amount of hand therapy afterwards, I had to have a special splint made, and wore it for 12 weeks, with physio exercises every day. It looked really promising to start with, I was able to bend my fingers without them getting stuck but after months of physio, my fingers stopped bending. The surgeon told me I had too much damage in the middle finger joints. Hope your joints are not too damaged.
When you see the surgeon ask him lots of questions about the damage in your finger joints to ascertain whether a tendon re-alignment will be successful.
Love
Rebecca