Faculty Bibliography

BACKGROUND: Microsurgical reconstructive algorithms for craniofacial defects have focused on soft-tissue flaps with or without conventional bone grafts. However, volumetric loss from muscle atrophy, bone resorption, and soft-tissue contraction limits long-term preservation of facial contour. Applying craniofacial principles of skeletal buttress support, the authors used composite vascularized bone flaps to reconstruct the soft tissue and the vertical and horizontal buttresses of the face. In this manner, facial proportions and aesthetics are maintained in composite tissue defects resulting from high-energy trauma or oncologic extirpation. METHODS: The authors conducted a retrospective review of 31 patients with craniofacial defects treated by a single surgeon with composite bone flaps at the R Adams Cowley Shock Trauma Center and The Johns Hopkins Hospital from 2001 to 2006. Charts were reviewed and data were collected on age, sex, mechanism of injury, type of defect, type of reconstructive procedure, and outcome. RESULTS: Thirty-one patients with composite tissue loss, primarily men (n = 21) with an average age of 37.4 years, underwent reconstruction with vascularized bone flaps (25 fibula flaps and six iliac crest flaps). There were three cranial defects, eight periorbital defects, 17 maxillary defects, and three maxillary and periorbital defects. The flap survival rate was 93.5 percent, with an average follow-up of 13.5 months. CONCLUSIONS: Restoration of facial height, width, and projection through skeletal buttress replacement is essential for achieving facial harmony. Since 2001, the authors' unit has pursued a paradigm shift with regard to treatment of composite oncologic or traumatic defects, advocating vascularized bone flaps to achieve excellent long-term functional and aesthetic outcomes.

Repair of large complex abdominal hernias with significant loss of domain requires component separation in combination with either a synthetic or biologic interpositional material. We previously described an algorithm for complex abdominal hernia repair, which incorporates Alloderm as an interpositional material and selective use of prolene mesh as an overlay. We now report recurrent laxity in a series of patients who were repaired with interpositional Alloderm alone without prolene mesh overlay. We reviewed all patients who underwent repair of massive ventral hernias and identified 7 patients who presented with abdominal wall laxity following component separation with interpositional Alloderm alone. All patients developed laxity within 12 months and required a secondary procedure. At the time of re-exploration, severe attenuation in the Alloderm was noted. The segment was excised, the edges closed primarily, and prolene mesh was placed as an onlay. Although Alloderm has been reported to be an effective biologic material for abdominal hernia reconstruction, we have noted significant laxity requiring secondary intervention.

BACKGROUND: Posttraumatic, high-energy defects of the midface can be challenging to reconstruct because they involve extensive composite tissue loss and result in significant permanent functional and cosmetic deformity. These injuries require replacement of the bony framework, external soft tissue, and intraoral mucosa. Local skin flaps and nonvascularized bone grafts have been used for reconstruction, but bony resorption and the associated soft-tissue collapse limit long-term viability. The authors present a classification of maxillary defects following high-energy trauma and a treatment algorithm using vascularized bone flaps. METHODS: Fourteen patients with significant maxillary loss from high-energy trauma underwent reconstruction with composite vascularized bone flaps. Eight patients had fibula flaps and six had iliac crest flaps. There were five women and nine men, with a mean age of 36.3 years (range, 21 to 48 years) and a mean follow-up of 18 months (range, 5 to 54 months). RESULTS: Thirteen of the 14 flaps survived. Nine patients had additional procedures. Nine patients had oronasal fistulas and eight were dependent on gastrostomy tubes preoperatively. All patients were able to feed orally without nasal regurgitation postoperatively. All patients achieved stable restoration of the midfacial architecture. CONCLUSIONS: The classification scheme presented centers on the missing maxillary subunits. The reconstructive algorithm is based on the type of defect, tissue requirement, and donor tissues necessary to restore facial projection and prosthodontic rehabilitation. Iliac crest and fibula bone free flaps are ideal for restoring a variety of traumatic maxillary defects. The authors advocate early reconstructive intervention using vascularized bone flaps to achieve superior functional and cosmetic outcomes.

We present the case of an 18-year-old girl with McCune Albright Syndrome (MAS) and a near total mandibular defect reconstructed with a free fibula flap. There are three reports of mandibular reconstruction in a patient with MAS using the free fibula flap; however this case is unique for two reasons. One, the continuity defect in our patient was much larger than previously reported, representing nearly the entire length of the mandible (21 cm) and required the entire harvestable length of the fibula. Two, the progression of the patient's disease limited options for reconstruction and dictated the use of a fibula with small dysplastic changes.

BACKGROUND: Large, complex, posttraumatic and recurrent abdominal hernias present a reconstructive challenge. Multiple techniques have been described to restore the integrity of the abdominal wall, although the indications and applications can be difficult to navigate. The authors propose an algorithm that facilitates the assessment and treatment of secondary large ventral defects. METHODS: The algorithm described involves a systematic approach to abdominal wall reconstruction and was applied to 23 consecutive patients at the R Adams Cowley Shock Trauma Center. Data collected from the chart review included age, body mass index, mechanism of injury, placement of skin graft and use of resorbable mesh before definitive reconstruction, size of defect, number of tissue expanders placed, length of follow-up, and complications. RESULTS: There were six female patients and 17 male patients, with an average age of 36 years. The average follow-up was 7 months. Seventeen patients had posttraumatic laparotomies, five patients had aggressive abdominal wall debridement following necrotizing fasciitis, and one patient developed a large abdominal wall hernia following complications from gastric bypass surgery. All patients underwent delayed abdominal wall reconstruction, with an average time to initial reconstruction of 19.5 months. Sixteen patients had no postoperative complications. Seven patients had complications, including one with an enterocutaneous fistula, one with a partial small bowel obstruction, two with seromas, one with a superficial wound infection, and two with recurrent abdominal wall laxity. CONCLUSIONS: The reconstructive ladder for large, complex abdominal hernias is poorly defined. The proposed algorithm provides a systematic staged approach that incorporates available techniques used for delayed reconstruction of the abdominal wall.

We present two cases of infected frontal sinus fractures requiring simultaneous obliteration of the frontal sinus and reconstruction of the horizontal buttress. In both cases, a free fibula flap was used for obliteration and bony reconstruction in a single stage. We believe that this is a novel technique for treatment of infected frontal sinus fractures obviating the need for secondary staged procedures.