Which suture material and technique is appropriate for repairing a finger laceration?

Finger Laceration Repair: Suture Selection and Technique

For finger lacerations, use simple interrupted sutures with 5-0 or 6-0 monofilament non-absorbable nylon sutures, or alternatively 5-0 absorbable synthetic sutures (polyglactin/Vicryl or poliglecaprone/Monocryl) to avoid the need for suture removal. Both approaches provide equivalent cosmetic outcomes and infection rates, but absorbable sutures eliminate the pain and inconvenience of suture removal 1.

Suture Material Selection

Non-Absorbable vs. Absorbable Options

The choice between non-absorbable and absorbable sutures depends on your priorities:

• Non-absorbable (5-0 or 6-0 nylon): Traditional gold standard for skin closure

  • Requires removal in 7-10 days for fingers
  • Excellent tensile strength throughout healing
  • Patient must return for removal (compliance issue)

• Absorbable synthetic (5-0 Vicryl or Monocryl): Equally effective alternative 1

  • No suture removal needed—major advantage for patient comfort and compliance
  • Maintains 50-75% tensile strength at 1 week 2
  • Same cosmetic outcomes and infection rates as non-absorbable sutures at 6 months 1
  • No difference in scar quality, healing, or scar retraction 1

Clinical Pearl: Absorbable sutures are particularly valuable for pediatric patients, anxious adults, or those with poor follow-up compliance, as they eliminate the trauma of suture removal.

Suture Technique

Simple Interrupted Sutures (Preferred)

Use simple interrupted sutures for finger lacerations 3. This technique:

• Allows individual adjustment of tension
• Prevents complete wound dehiscence if one suture fails
• Easier to place in irregular wounds
• Standard approach for hand and finger repairs

Alternative: Continuous Subcuticular Sutures

While continuous subcuticular sutures reduce wound dehiscence compared to interrupted transcutaneous sutures 2, this evidence comes primarily from abdominal surgery. For finger lacerations specifically, simple interrupted sutures remain the standard due to:

• Better control in small, mobile areas
• Easier placement around finger contours
• Lower risk of purse-string effect

Anesthesia Considerations

Before suturing, achieve adequate anesthesia:

• Topical anesthetics (LET: lidocaine-epinephrine-tetracaine gel): Apply for 20-30 minutes under occlusive dressing 4
• Injectable lidocaine: Use with epinephrine 1:100,000—this is safe for digits despite old teaching 5
• Buffer lidocaine with bicarbonate and warm it to reduce injection pain 4
• Inject slowly with small-gauge needle (27-30 gauge)

Wound Preparation

• Irrigation: Potable tap water is as effective as sterile saline and does not increase infection risk 5
• Gloves: Non-sterile gloves are acceptable and do not increase infection rates compared to sterile gloves 5, 6
• Antiseptic prep: Use povidone-iodine or chlorhexidine 7

Common Pitfalls to Avoid

1. Avoiding epinephrine in digits: This is outdated teaching. Epinephrine 1:100,000 is safe for finger use and provides excellent hemostasis 5

2. Over-tightening sutures: This strangulates tissue and impairs healing. Sutures should approximate edges without blanching

3. Delayed closure concerns: There is no absolute "golden period." Depending on wound characteristics, closure up to 18+ hours may be reasonable 5

4. Using tissue adhesives on fingers: Avoid tissue adhesives on fingers due to high tension and frequent movement—they have higher dehiscence rates than sutures 2

Suture Removal Timing

For non-absorbable sutures on fingers: Remove at 7-10 days 2, 5

Post-Repair Care

• Dressing: Use occlusive or semi-occlusive dressings—wounds heal faster in moist environments 5
• Ointment: White petrolatum is as effective as antibiotic ointment 5, 8
• Wetting: Safe to wet wound after 12 hours 5, 8
• Tetanus: Update if indicated