In recent posts I highlighted some great training videos on suturing and on one and two handed knot tying. In this post I will recommend a video tutorial for instrument tying. As with the other suturing and knot tying skills, it is very important that medical students learn early in their careers how to instrument tie. This is the bread and butter of knot tying. If you are proficient with the instrument tie you will impress residents and attendings and they will be much more willing to give you responsibilities in the OR. The video below is a straight forward review and tutorial of the instrument tie. As with all other knots, remember that a square knot is not complete until you have made two opposing throws; otherwise you are tying granny knots.