What is the optimal suture material for subcutaneous skin closure in an adult patient without known allergies?

Best Suture for Subcutaneous Skin Closure

Use absorbable monofilament sutures (4-0 poliglecaprone or 4-0 polyglactin) in a continuous subcuticular technique for optimal subcutaneous skin closure.

Suture Material Selection

The evidence strongly supports absorbable synthetic monofilament sutures as the optimal choice for subcutaneous closure 1. Specifically:

• 4-0 poliglecaprone (Monocryl) or 4-0 polyglactin (Vicryl) are the preferred materials
• These sutures retain 50-75% of their original tensile strength after 1 week in situ, providing crucial wound support during the critical healing phase 1
• For fascial closure in emergency settings, monofilament materials are strongly recommended due to lower incisional hernia rates 2

Monofilament vs Multifilament

While both monofilament (Monocryl) and multifilament (Vicryl) absorbable sutures show comparable outcomes in clinical practice 3, 4, monofilament sutures theoretically carry lower infection risk and are preferred when available, particularly in contaminated fields 2.

Suturing Technique

Continuous subcuticular suturing is superior to interrupted sutures for the following reasons 1:

• Significantly reduces superficial wound dehiscence (RR 0.08; 95% CI 0.02 to 0.35) 1
• No difference in surgical site infection rates compared to interrupted sutures 1
• Better cosmetic outcomes with higher patient and physician satisfaction scores 5
• No impact on hospital length of stay 1

Trade-off to Consider

The main disadvantage is longer closure time (approximately 5-6 minutes longer than interrupted sutures or staples) 1. However, this is offset by eliminating the need for suture removal and improved patient satisfaction.

Special Considerations

Antimicrobial-Coated Sutures

In clean, clean-contaminated, and contaminated surgical fields, consider triclosan-impregnated sutures when available 2. Recent high-quality RCTs demonstrate significantly lower surgical site infection rates in emergency settings.

Comparison with Other Closure Methods

• vs. Staples: Subcuticular sutures probably reduce wound complications (RR 0.79) and achieve higher patient satisfaction, though staples are faster to apply 6
• vs. Tissue Adhesives: No clear difference in SSI rates, but adhesives may provide better patient satisfaction and are faster to apply 1, 6
• vs. Surgical Tapes/Steri-strips: Adding adhesive strips to subcuticular closure provides no additional benefit for cosmetic outcomes or complication reduction 1

Clinical Algorithm

1. Choose suture material: 4-0 absorbable monofilament (poliglecaprone preferred, polyglactin acceptable)
2. Use continuous subcuticular technique for all wound types
3. Consider antimicrobial-coated sutures in contaminated fields or high-risk patients
4. Skip adhesive strips - they add no benefit 1
5. Accept the extra 5-6 minutes of closure time for better long-term outcomes

Common Pitfalls

• Avoid non-absorbable transcutaneous sutures - they require removal and show higher dehiscence rates 1
• Don't pull continuous sutures too tightly - this can strangulate wound edges 1
• Don't use tissue adhesives alone - sutures are superior for preventing wound dehiscence (RR 3.35 for adhesive failure) 1

The evidence consistently demonstrates that absorbable monofilament sutures in a continuous subcuticular pattern optimize wound healing, minimize complications, and maximize patient satisfaction across diverse surgical settings 1, 6, 5.