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Related Experiment Video

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Reverse Exposure-Limiting Suture (RELS): A Technique for Defect Approximation in Constrained Anatomical Spaces.

Ishith Seth1,2, Gianluca Marcaccini3, Omar Shadid1

  • 1Department of Plastic and Reconstructive Surgery, Peninsula Health, Frankston.

Techniques in Hand & Upper Extremity Surgery
|January 13, 2026
PubMed
Summary

A novel surgical technique, the reverse exposure-limiting suture (RELS), minimizes tissue damage during delicate suturing. This method allows controlled approximation in challenging anatomical areas, reducing risks of scarring and impairment.

Keywords:
defect approximationflexor tendonmicrosurgeryminimally invasive techniquenail bed repairreverse exposure-limiting suture

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Area of Science:

  • Surgical Innovation
  • Microsurgery
  • Reconstructive Surgery

Background:

  • Suturing delicate anatomical structures poses a risk of iatrogenic damage due to excessive tissue exposure.
  • Conventional surgical approaches involving incisions and tissue retraction can lead to complications like adhesions, scarring, and functional impairment.

Purpose of the Study:

  • To introduce and illustrate the application of the reverse exposure-limiting suture (RELS) technique.
  • To demonstrate RELS as a method for controlled tissue approximation while minimizing exposure in delicate surgical regions.

Main Methods:

  • The reverse exposure-limiting suture (RELS) involves passing the needle through a defect and reversing it beneath overlying tissue with the swage leading.
  • This maneuver facilitates approximation without elevating protective tissues or releasing critical structures like pulleys.
  • RELS was applied in two cases: a proximal nail-bed laceration and a Zone 2 flexor tendon injury.

Main Results:

  • Both cases demonstrated successful outcomes with uneventful healing.
  • Case 1 showed normal nail regrowth at 6 weeks post-procedure.
  • Case 2 achieved excellent early function at 3 months, with no compromise to the flexor tendon pulleys.

Conclusions:

  • The reverse exposure-limiting suture (RELS) technique appears feasible for use in anatomically constrained areas.
  • Further research is necessary to fully define the efficacy, potential tissue trauma associated with swage reversal, and optimal indications for RELS.