Suggested suture sizes for traumatic skin laceration closure by site

Site	USP (skin closure)	USP (dermal closure)
Superficial skin closure
Face (especially nose, vermillion border, or eyelid)	6-0	5-0 or 6-0
Face (forehead, cheek, or chin) and digits (fingers or toes)	5-0 or 6-0	5-0 or 6-0
Scalp, trunk, extremities, palm, and sole	4-0 or 5-0	3-0 or 4-0
Trunk, extremities (wounds under tension [eg, gaping or located near or across a joint])	3-0 or 4-0	3-0 or 4-0
Mucous membrane closure
Intraoral mucosa	4-0 or 5-0	N/A
Tongue	3-0 or 4-0	N/A

Suture size is commonly indicated by the USP (United States Pharmacopeia) system. The higher the number of zeros, the smaller the size and the lower the strength. For example, 3-0 suture has a diameter that is about 2 to 4 times larger than 6-0 suture.

Graphic 129828 Version 1.0

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Suggested suture sizes for traumatic skin laceration closure by site