Basic Knots skills for surgery

Here are the List of the basic knots videos need to tie during the surgery.
One-handed Reef Knot
https://www.youtube.com/watch?v=3js_vF1302E
slip knot
https://www.youtube.com/watch?v=o8u1vVNC9Bk
common faults in knots tieing
https://www.youtube.com/watch?v=HUx38M8-Zhc
surgeon’s Knot
https://www.youtube.com/watch?v=f1qgnxwFc80
instrument tied knots
https://www.youtube.com/watch?v=oBWP6CrdkJY