hey everyone it's Sarah with register nurse ran.com and in this video we're going to check the patella deep tendon reflex so let me show you how that is done okay to check the patella reflex this is going to be looking at L2 to L4 and to find the tendon what you want to do is locate the kneecap and then go just a little bit right below it and the best way is to have the patient extend the leg out and then that tendon will pop out and that is where you're going to go okay after locating the tendon put your hand behind the knee just to support it have them relax and the tendon's right here and what you're going to do is you're just going to um tap briskly and what we're looking for is this lower leg to extend outward so here we go and we got a response there and one more time and got really good response there okay so that is how you check that deep tendon reflex now check out my other videos on how to check the other four deep tendon reflexes and consider subscribing to this YouTube channel