Which suture type is preferred for the subcutaneous layer?

The preferred suture type for the subcutaneous layer is plain gut. This material is absorbable and composed of collagen from the intestines of cattle or sheep, providing good tensile strength while allowing for gradual absorption by the body. Because the subcutaneous layer does not require a long-term suture support, absorbable sutures like plain gut are especially suitable, promoting healing without the need for removal and minimizing the risk of foreign body reactions.

Plain gut is designed to provide adequate tissue approximation in the initial healing phase, which typically lasts around a few weeks. Its rapid absorption aligns perfectly with the healing process in the subcutaneous tissue, making it a desirable choice over non-absorbable sutures, which might remain as foreign bodies longer than necessary. Additionally, other absorbable options, such as chromic gut, have extended absorption times, which might not be ideal for this specific layer.

Polypropylene and silk, being non-absorbable, remain in the body until they are physically removed, which can increase irritation and potential complications long after the initial healing occurs. Thus, for the subcutaneous layer, the use of plain gut optimally suits the required characteristics for healing and management.