I was pruning a medium sized Catalpa tree, I was 95% complete and pruning out the last few epicormic shoots on a low limb. I was using my Silky saw to prune out some thin shoots. I hand my left hand over to the left of me, and was pruning a small shoot over to the right with my right hand. I had the silky saw held horizontal, as I attempted to prune off a shoot the saw got stuck so I pulled with more force, the saw cut through the shoot and followed through with a lot of force and momentum and struck my left hand which was approximately 2 feet away. I was wearing gloves at the time, as soon as I hit my hand I new I had broken through the skin. I defended from the tree, removed my glove to see the skin had peeled back and I could see my knuckle. Later that day I went to a walk in clinic, the doctor referred me onto the emergency at the local hospital as he saw that I have severed a tendon. At the hospital they confirmed thatI had partially severed the tendon to my left index finger and would need surgery to stitch it back together. I had the surgery and it took a long and frustrating 12 weeks to rehab and recover.