In the reconstructive ladder for wound closure, which option represents the highest 'rung' (most complex) and is used when all simpler options are inadequate?
- A Free tissue transfer (free flap with microvascular anastomosis) ✓
- B Primary closure
- C Split-thickness skin graft
- D Local transposition flap
Correct answer: A. Free tissue transfer (free flap with microvascular anastomosis)
Explanation
The reconstructive ladder ascends from: (1) primary closure, (2) secondary intention healing, (3) skin grafts (STSG/FTSG), (4) local flaps (advancement, rotation, transposition), (5) pedicled regional flaps, (6) free tissue transfer (free flap). Free flap reconstruction involves microvascular anastomosis of a composite tissue unit (skin, muscle, bone) to recipient vessels at a distant site and represents the most complex, highest-rung option — reserved for large defects, irradiated/compromised beds, or complex 3D defects requiring specialized tissue.
Reference: Bailey & Love's Short Practice of Surgery, 27th ed.
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Written and medically reviewed by the StethoPrep medical team.