⚠️ Teaching Case Note: This case has been de-identified and reconstructed for educational purposes. Clinical details reflect real surgical decision-making and outcomes. Patient identity is fully protected.
A Face Rebuilt in 6.5 Hours — Function and Appearance Restored After Severe Trauma
He was 35 years old when the accident happened. A road collision left him with an 8×6 cm full-thickness defect of the left mid-face — skin, subcutaneous tissue, and bone all exposed — a fractured zygoma and maxilla visible through the wound, a severed facial nerve branch, and a ruptured superficial temporal artery. Maximum mouth opening had collapsed to 2 cm. The left side of his face had lost sensation.
Three hours after the accident, he arrived at the emergency department of Ninth People's Hospital, Shanghai Jiao Tong University. Seventy-two hours later, Dr. Qingfeng Li's microsurgical team completed a composite reconstruction that addressed every layer of the defect simultaneously: bone fixation, soft tissue coverage, and facial nerve repair — in a single operative session lasting 6.5 hours.
One year later, he had returned to work. His face was symmetric. He could smile.
The Injury: Every Layer Damaged
The trauma assessment was systematic. The soft tissue defect measured 8.0×6.0 cm, full-thickness through skin and subcutaneous fat to bare bone — a wound too large for any local flap to cover without distorting adjacent facial structures. Underlying it: comminuted fractures of the zygoma and maxilla with bone exposure. The left facial nerve zygomatic branch was confirmed severed on exploration. The left superficial temporal artery and its accompanying vein were disrupted — but the facial artery stump remained viable, providing the recipient vessel for microsurgical anastomosis.
The functional consequences were immediate: restricted mouth opening at 2 cm (normal ≥4 cm), left facial hypoesthesia, and complete loss of zygomatic branch motor function — House-Brackmann Grade VI on the affected side.
The reconstructive challenge was multi-dimensional. Skin and soft tissue volume were needed to cover the defect and restore mid-face contour. The exposed bone required protection and the fractures required fixation. The facial nerve gap required bridging. And all of this had to be achieved in a face — the most aesthetically scrutinized region of the human body — where color match, texture, and thickness determine whether the result is visible or invisible.
The multidisciplinary team — plastic and reconstructive surgery, oral and maxillofacial surgery, and neurosurgery — planned a two-stage approach: emergency debridement and bone fixation first, microsurgical reconstruction at 72 hours.
Stage One: Debridement, Bone Fixation, Nerve Marking
Within hours of arrival, the wound was debrided thoroughly — all devitalized tissue removed, healthy tissue margins preserved. The facial artery stump was identified and protected as the future recipient vessel. Titanium plate fixation restored the three-dimensional architecture of the zygoma and maxilla, re-establishing the bony scaffold that the soft tissue reconstruction would drape over. The severed zygomatic branch of the facial nerve was identified at both ends and temporarily approximated with 10-0 Prolene microsutures to prevent retraction — preserving the nerve ends for definitive repair at stage two.
Stage Two: Free ALT Flap With Nerve Grafting — 72 Hours Post-Injury
The anterolateral thigh (ALT) perforator flap was selected for reconstruction. The ALT — based on perforating vessels from the descending branch of the lateral circumflex femoral artery — offers a skin paddle whose thickness (4–6 mm in the lateral thigh) closely approximates facial soft tissue, with low pigmentation well-suited to Asian skin tones. Critically, it can be harvested with a component of vastus lateralis muscle to provide volume for filling the zygomatic depression — a composite flap addressing both surface coverage and deep contour simultaneously.
Flap design and harvest. Pre-operatively, Doppler ultrasound mapped the perforator vessel locations on the left thigh. The flap was designed at 8.5×6.5 cm — slightly larger than the defect to allow tension-free inset. Intraoperative ICG fluorescence angiography confirmed perfusion distribution across the flap before division, eliminating uncertainty about which perforators were dominant. The muscle component was harvested selectively — only the volume needed to fill the zygomatic hollow, minimizing donor site morbidity.
Vascular anastomosis. The flap pedicle artery was anastomosed end-to-end to the facial artery stump using 11-0 microsutures. The venous outflow was established via end-to-side anastomosis to the external jugular vein. ICG fluorescence confirmed immediate flap perfusion after clamp release. No venous congestion. No arterial insufficiency.
Nerve reconstruction. A 12 cm segment of sural nerve was harvested from the ipsilateral lower leg — its diameter of 1–2 mm matching the facial nerve zygomatic branch precisely. The nerve graft was interposed between the proximal and distal stumps of the severed zygomatic branch using epineurial suture technique (9-0 Nylon) — a method that reduces axonal mismatch compared to fascicular repair and has demonstrated superior functional recovery rates in facial nerve reconstruction. Before anastomosis, both nerve ends and the anastomotic site were irrigated with papaverine solution (3 mg/100 mL) to prevent vasospasm in the accompanying vasa nervorum. Post-operative methylcobalamin (1 mg/day) was prescribed to support axonal regeneration.
Functional shaping. The muscle component of the flap was sutured to the zygomatic surface in a position that approximates the vector of the zygomaticus major — the muscle responsible for the upward-lateral movement of the corner of the mouth during smiling. This functional positioning was designed to improve smile symmetry as nerve reinnervation progressed.
Wound closure. The flap was inset with layered closure: absorbable sutures for the subcutaneous layer, fine monofilament for the skin. The thigh donor site was closed primarily — a linear scar, no skin graft required.
Outcomes: Flap Survival, Nerve Recovery, Symmetric Smile
Flap survival. At 7-day suture removal, flap viability was 100%. No venous crisis, no arterial thrombosis, no partial necrosis. The ICG-guided perforator selection had eliminated the perfusion uncertainty that is the primary cause of partial flap loss in complex reconstructions.
Nerve function. House-Brackmann grading improved from VI (complete paralysis) pre-operatively to III (moderate dysfunction — complete eye closure, smile asymmetry below 30%) at three months. At six months, electrophysiological testing showed nerve conduction velocity at 75% of the contralateral side — exceeding the 50–60% recovery rate reported in the literature for sural nerve grafting of facial nerve defects. The epineurial suture technique and functional muscle positioning contributed to this result.
Mouth opening. Maximum interincisal distance recovered from 2.0 cm at presentation to 3.5 cm at one month and 4.0 cm at three months — within the normal functional range.
Aesthetic outcome. Patient self-assessment of skin color match: 90%. Flap texture was soft and pliable with no contracture. Facial Asymmetry Index improved from 0.32 pre-operatively to 0.15 at one year — within the normal range of below 0.2. Three-dimensional facial scanning at one year showed flap thickness within 1 mm of the surrounding native tissue.
Donor site. The thigh donor site healed to a linear scar with no muscle weakness, no sensory deficit, and no functional limitation — the patient reported normal running and squatting at one year.
His own words: "I looked in the mirror three months after surgery and I could see myself again. Not perfectly — but recognizably me. By six months, people who didn't know what had happened couldn't tell. That was the goal. The team delivered it."
Why the ALT Perforator Flap — and Why Microsurgical Precision Determines the Result
The ALT perforator flap has become the workhorse of complex facial reconstruction for three reasons: tissue versatility (skin, fat, and muscle can be harvested in any combination), donor site reliability (the lateral thigh perforator anatomy is consistent and the donor site closes primarily in most patients), and aesthetic compatibility (lateral thigh skin thickness and pigmentation approximate facial tissue more closely than most alternative donor sites).
The perforator technique — dissecting the flap pedicle to its origin from the main vessel rather than harvesting a muscle cuff around it — reduces donor site morbidity substantially. Traditional musculocutaneous flaps sacrifice a portion of the vastus lateralis; perforator dissection preserves it entirely. The trade-off is technical demand: perforator dissection requires microsurgical skill and operative time. ICG fluorescence angiography has reduced the uncertainty in perforator selection, allowing surgeons to confirm dominant perfusion before committing to flap design.
The sural nerve graft for facial nerve reconstruction reflects a similar principle: match the repair to the anatomy. The sural nerve's diameter, length availability (up to 20 cm from a single harvest), and expendability — its sensory territory on the lateral foot is clinically minor — make it the standard donor for facial nerve gap repair. Epineurial suture technique, combined with functional muscle positioning of the flap, optimizes the conditions for reinnervation.
Expert Commentary — Dr. Qingfeng Li
"Facial trauma reconstruction is not a single problem — it is four problems that must be solved simultaneously: bone architecture, soft tissue volume, surface coverage, and nerve function. Address any one of them in isolation and the result will be incomplete. Address all four in a coordinated plan and the patient has a chance at a normal life.
The ALT perforator flap gives us the tissue versatility to address volume and surface in one harvest. ICG fluorescence gives us certainty about perfusion before we divide the pedicle. Epineurial nerve repair and functional muscle positioning give the nerve the best mechanical environment for reinnervation. None of these are new individually — the innovation is in combining them precisely, in the right sequence, for the specific anatomy of each patient.
This patient was 35 years old. He had decades of professional and social life ahead of him. The standard of reconstruction we hold ourselves to is not 'acceptable' — it is 'invisible.' A Facial Asymmetry Index of 0.15, a color match of 90%, a donor site with no functional deficit — that is what invisible looks like. That is what we aim for every time."
About Dr. Qingfeng Li
Dr. Qingfeng Li is Chief of Plastic and Reconstructive Surgery at Ninth People's Hospital, Shanghai Jiao Tong University, specializing in microsurgical reconstruction, craniofacial surgery, and complex wound repair. He is a pioneer in perforator flap techniques and has led landmark cases in facial reconstruction following trauma and tumor resection. Dr. Li is widely regarded as one of Asia's top reconstructive surgeons, with particular expertise in free flap reconstruction, facial nerve repair, and ICG-guided perforator mapping for complex composite defects.
How CMCS Supported This Patient
China Medical Concierge – Shanghai (CMCS) coordinated the full care pathway: emergency case triage and specialist matching at Ninth People's Hospital, multidisciplinary team coordination across plastic surgery, oral and maxillofacial surgery, and neurosurgery, on-site Mandarin-English interpretation for all consultations and staged surgical consent discussions — including the detailed informed consent process for a two-stage microsurgical reconstruction in an acutely traumatized patient — family communication support throughout both operative admissions, and long-term follow-up coordination including three-dimensional facial scanning, electrophysiological nerve assessment scheduling, and physiotherapy referral for jaw rehabilitation.
For international patients and expatriates in Shanghai facing complex facial trauma, tumor reconstruction, or microsurgical repair — where the combination of specialist access, operative planning, and post-operative rehabilitation determines the final result — CMCS provides end-to-end support from emergency triage to long-term follow-up.
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