For adult patients undergoing elective blepharoplasty, is subcuticular (intracutaneous) suturing superior to cutaneous interrupted suturing for wound closure?

Blepharoplasty Wound Closure: Subcuticular vs Cutaneous Interrupted Sutures

For blepharoplasty wound closure, use a running 6-0 fast-absorbing gut suture combined with two interrupted 6-0 polypropylene (Prolene) sutures at key points, as this technique results in the lowest complication rates (2% milia, 0% scar revisions) compared to other methods. 1

Evidence-Based Comparison of Closure Techniques

Subcuticular Continuous Sutures

• Continuous subcuticular sutures dramatically reduce superficial wound dehiscence by 92% (RR 0.08; 95% CI 0.02-0.35) compared to interrupted transcutaneous sutures across surgical procedures. 2, 3
• The mechanism behind this benefit is that absorbable subcuticular sutures provide prolonged wound support without requiring removal at 7-9 days, when interrupted non-absorbable sutures are typically extracted. 2, 3
• In general surgical wounds, continuous sutures create a continuous seal that may better prevent bacterial invasion and require less operative time. 2

Blepharoplasty-Specific Evidence

The general surgical data favoring continuous sutures does not translate directly to blepharoplasty, where specialized techniques yield superior outcomes:

• In a series of 800 consecutive blepharoplasties, running 6-0 fast-absorbing gut suture resulted in only 2% milia formation and zero scar revisions, outperforming all other techniques tested. 1
• Running subcuticular polypropylene (non-absorbable) produced 2.5% milia and 5.5% standing cone deformities requiring revision. 1
• Running cutaneous locked Prolene resulted in 17% milia formation and 4.4% standing cone deformities. 1
• Running 6-0 plain gut (not fast-absorbing) led to 6.7% milia and 2.8% unsightly scarring. 1
• Statistical analysis confirmed significant differences between groups for milia formation, scarring, and persistent erythema (P < 0.008). 1

Comparative Study Findings

• A smaller prospective double-blind study (20 patients) comparing subcuticular 5-0 polypropylene with running 6-0 fast-absorbing catgut found that the fast-absorbing catgut offered slightly better aesthetic results based on both surgeon and patient preferences. 4
• Comparable morbidity and no significant differences in postoperative discomfort were identified between techniques. 4

Optimal Technique Algorithm

Primary recommendation:

• Place two interrupted 6-0 Prolene sutures at critical tension points (typically medial and lateral aspects of the incision). 1
• Complete closure with a running 6-0 fast-absorbing gut suture along the entire incision. 1
• This hybrid approach combines the precision of interrupted sutures at key anatomic points with the continuous support and self-dissolving properties of absorbable material. 1

Suture material selection:

• Use slowly absorbable monofilament sutures (4-0 poliglecaprone or polyglactin) if opting for purely subcuticular closure, as these retain 50-75% tensile strength after 1 week. 2
• Fast-absorbing gut typically dissolves within 42-56 days, providing adequate support during the critical healing window. 2

Critical Pitfalls to Avoid

• Never use running cutaneous locked Prolene for blepharoplasty closure, as it produces unacceptably high milia rates (17%) compared to other techniques. 1
• Avoid using plain gut suture instead of fast-absorbing gut, as plain gut results in higher rates of milia (6.7%) and unsightly scarring (2.8%). 1
• Do not use purely subcuticular permanent sutures without any interrupted anchoring points, as this increases standing cone deformities requiring revision (5.5%). 1
• If using non-absorbable interrupted sutures alone, remove them at 7-9 days to prevent infection risk and suture track marks, though this approach is inferior to the hybrid technique. 5, 6
• Avoid premature suture removal before 7 days, as this causes wound dehiscence and widened scars. 6

Nuances in Technique Selection

The periorbital region differs from abdominal or groin surgical sites where the general surgical literature demonstrates clear superiority of continuous subcuticular closure. 3 The thin, delicate eyelid skin and minimal tension across blepharoplasty incisions create a unique environment where:

• Fast-absorbing gut provides adequate tensile strength without the prolonged foreign body reaction that causes milia formation. 1
• Strategic placement of two permanent interrupted sutures at high-tension points prevents standing cone deformities while allowing the running absorbable suture to provide continuous support. 1
• Modern blepharoplasty emphasizes tissue conservation and precise wound edge approximation rather than aggressive closure under tension. 7