Surgical Knot Lab Images

Question 1

What knot can be seen here?

Answer 1

Question 2

What knot can be seen here?

Answer 2

Surgeon’s knot

Question 3

What knot can be seen here?

Answer 3

Half-hitch

Question 4

A half hitch knot occurs when there is __________ tension on suture strands when ________ a knot or when _________
tension is applied to one strand.

Answer 4

uneven, tightening, upward

Question 5

What knot can be seen here?

Answer 5

Granny knot

Question 6

A granny knot occurs when second throw is tightened in the ____ direction
as the first throw. This leads to ________ knot security.

Answer 6

same, poor

Question 7

List the General Principles of Knot Tying
1. Completed knot must be firm so slipping does not occur
2. Knot should be small, and ends should be as short as possible
* Prevents tissue reaction
3. Handle suture delicately when using instruments [avoid damaging suture]
4. Pull both suture strands [ears/arms] in opposite directions with even tension when
tightening
5. Avoid friction between strands [sawing]
6. Weakens suture integrity
Avoid excessive tension
* This can break the suture and cut tissues
7. Extra ties DO NOT add strength
* However, more throws are needed with larger sized suture
8. Avoid crimping suture with instruments
* Grab free end of the strand, ONLY during instrument ties
9. Minimum of 4 throws [2 knots]

Question 8

1 hand ties are useful in ____ cavities and __________ spaces.

Answer 8

deep, confined

Question 9

2 hand ties allow for good ________ and _______ to make a knot, but can
be difficult in ________ spaces.

Answer 9

control, accuracy, confined

Question 10

• 1. Simple knot [throw] – ________
     basic unit

Answer 10

incomplete

Question 11

• 2. Square knot – __________ knot

Answer 11

completed

Question 12

• 3. Surgeon’s [also known as _________]
     knot – _________ tension knot

Answer 12

Friction, completed