I tore a ligament in the top joint of my thumb. I've been searching for a brace that goes high enough on my thumb to prevent me from bending the top of my thumb. This brace is perfect. My thumb is fully covered and the positioning on the thumb is fully adjustable (tight or loose). I have tried others that were too tight on my thumb or the metal bar was too hard for my sore and bruised thumb to be up against. This brace is comfortable and allows me to rest the ligaments so they will hopefully heal!