As a physical therapist, I saw many diverse patients who injured fingers. Some broken, some inflamed, and some surgery after rehab. Mostly concerned about their finger functions. It contains 2 types of patterns. Flexion and Extension. Finger bending or extend is not simply easy. It takes lot of time to become back to normal. Bending finger can be done by rehabilitation like passive and active exercise. However, extension is different story. By using hard rehabilitation, extending finger mostly hard enough and sometimes it can become permanent dysfunction. Despite of putting my all of effort to be a normal, I failed many times making finger extension. In my clinical experiences, I recognized that extension must need the splints. So, what splint you should choose?
I recommends three type of finger extension splint here.

I recommends you to buy Three-point force system splints. It can be most important for extending finger joint.

This type of splint also Three-point force system. I brought this one to know how it works and I found this product is totally cool. But think about when you sleep. Mostly, splint should use when you are in sleep. If it make you brother when you are in sleep, it will be in trouble. However, this product make finger extend so good. it just in my experience.

If you need to search finger extension splint, I recommends these all of three products. you can easily click the pictures above and buy products what you want it to buy.