Question
The generally accepted safe and reliable length:width ratio for a random pattern flap is no more than
| A. |
1:1
|
| B. |
1.5:1
|
| C. |
2:1
|
| D. |
4:1
|
Show Answer
|
Correct Answer � B
Explanation
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|
Answer- B 1.5:1
Length to width ratio is 1.5:1 (Maximum- 3:1 ↑ risk of failure)
Normally the breadth of the flap should be no more than the length of the flap, to prevent the necrosis of the
flap, thus the safe length to breadth ratio is 1:1.
When the flap is cut from facial and scalp skin, the length:width ratio cannot safely exceed 1.5:1.
Three sides of a rectangle are rotated.
No specific relationship to where the blood supply enters (Average survival) in random flaps.
It is used to reconstruct small but full thickness defects.
