Free tissue transfer to the traumatized upper extremity: Risk factors for postoperative complications in 282 cases.

BACKGROUND: Complex traumatic upper extremity injuries frequently possess compromised local vasculature or extensive defects that are not amenable to local flap reconstruction. Free tissue transfer is required to provide adequate soft tissue coverage. The present study aimed to evaluate risk factors that contribute to postoperative complications and flap loss in complex upper extremity reconstruction. METHODS: Retrospective chart review was performed for all patients undergoing free tissue transfer for upper extremity reconstruction from 1976 to 2001. Data collected included patient demographic characteristics, timing of reconstruction, location of injury, fracture characteristics, operative interventions, and postoperative complications. Statistical analysis was performed using χ(2) and Fisher exact tests. RESULTS: In total, 238 patients underwent 285 free tissue transfers and met inclusion criteria, from which 3 were excluded because of inadequate information (n = 282). Extremities were repaired within 24 h (75 cases; 27%), in days 2-7 (32 cases; 12%), or after day 7 (172 cases; 62%). Timing of reconstruction did not significantly affect postoperative outcomes. Proximal location of injury was significantly associated with superficial (relative risk [RR], 6.5; P < .01) and deep infection (RR, 5.3; P < .01), and osteomyelitis (RR, 4.0; P < .01), although not with flap failure (P = .30). Presence of an open fracture was significantly associated with developing superficial (RR, 3.1; P = .01) and deep (RR, 1.9; P < .01) infection, as well as osteomyelitis (RR, 1.6; P < .01). Having a closed fracture did not negatively influence postoperative outcomes. CONCLUSIONS: This study supports the safety of early free tissue transfer for reconstruction of traumatized upper extremities. Injuries proximal to the elbow and open fracture were associated with a significantly higher infection rate. Gustilo grade IIIC fractures, need for interpositional vein grafts, and anastomotic revision at index operation resulted in significantly higher risk of flap loss, whereas the presence of fracture, fracture fixation, and injury location were not predictors of flap failure.

Use of the nasal sidewall island inversion flap for single-stage ala nasi reconstruction: a report of 103 consecutive cases.

BACKGROUND: Alar reconstruction can be challenging, and numerous solutions for reconstructing this potentially difficult area have been proposed. The authors' preferred solution is an island inversion flap based on the superior alar artery. METHODS: The authors performed a retrospective review of the medical notes and photographs of 103 consecutive patients who underwent alar reconstruction with the nasal sidewall island inversion flap. Patient demographics and complications were recorded. When they were available, postoperative photographs (>2 months postoperatively) were rated by three plastic surgeons using a Likert scale together with a rating guide to determine the aesthetic outcome. RESULTS: Between 1998 and 2012, the authors performed 103 island inversion flaps. Mean patient age was 59 years (range, 23 to 85 years). Eighteen (17 percent) of 103 patients had defects extending beyond the ala. There were no flap losses and seven cases of superficial epidermolysis. Revision surgery was performed in three cases. In 48 of 103 cases, postoperative photographs (>2 months postoperatively) were available for aesthetic assessment. The aesthetic results were rated as "good" to "excellent" in more than 70 percent of cases (range, 73 to 85 percent) by the three plastic surgeons. CONCLUSIONS: The nasal sidewall island inversion flap is a reliable and versatile flap for alar reconstruction. It can consistently produce good to excellent aesthetic results in a single-stage operation. CLINICAL QUESTION/LEVEL OF EVIDENCE: Therapeutic, IV.

The template technique for breast mound planning when using abdominal flaps for breast reconstruction.

Delayed breast reconstruction with abdominal flaps typically involves a process of 'trial and error' when moulding the flap into a satisfactory breast mound. This moulding process is crucial to the final aesthetic result. We present a template technique to preoperatively plan the skin envelope of each reconstruction. Templates are quick and simple to construct, and are tailor-made based on several measurements from the contralateral breast. The technique is versatile and can be adjusted for use with Wise-pattern breast reduction or mastopexy. In our experience, the template technique reliably attains natural shape and good symmetry when compared with unplanned flap moulding.

The cutaneous arteries of the anterior abdominal wall: a three-dimensional study.

BACKGROUND: Abdominal perforator flaps represent a natural progression in the quest to minimize abdominal wall morbidity. Their one disadvantage is the significant rate of vascular complications to which they are subject in some series. The authors examined the vascular anatomy of the abdominal integument, to determine why such complications occur and how they may be prevented. METHODS: In 10 fresh cadavers, major arteries supplying the abdominal wall were injected with a lead-based contrast medium. The abdominal integument of each cadaver was imaged using a 16-slice spiral computed tomography scanner, to produce three-dimensional reconstructions of the arterial anatomy. Reconstructions were observed for orientation, course, and morphology of the major perforators within the abdominal integument. RESULTS: Perforators of the deep inferior epigastric artery (DIEA) varied markedly in their orientation, course, and morphology among specimens. By contrast, perforators of the superior epigastric artery (SEA) were relatively consistent in their morphology and orientation. In eight of 10 specimens, SEA perforators with extensive anatomical "territories" orientated toward the umbilicus were present. These SEA perforators pierced the rectus sheath within 4 cm of the costal margin and were present bilaterally in seven of eight specimens. CONCLUSIONS: The unpredictable orientation and course of DIEA perforators indicate that the blood supply of abdominal perforator flaps, raised without clear knowledge of their unique vascular anatomy, may often be more random than axial. This may account for much of the ischemia-related morbidity observed with DIEA-based perforator flaps. Preservation of SEA perforators adjacent to the costal margin during abdominoplasty will likely improve abdominal wall perfusion and reduce donor-site morbidity.

Three-dimensional CT angiography: a new technique for imaging microvascular anatomy.

To date there has been no satisfactory research method for imaging microvascular anatomy in three dimensions (3D). In this article we present a new technique that allows both qualitative and quantitative examination of the microvasculature in 3D. In 10 fresh cadavers (7 females, 3 males, mean age 68 years), selected arteries supplying the abdominal wall and back were injected with a lead oxide/gelatin contrast mixture. From these regions, 30 specimens were dissected free and imaged with a 16-slice spiral computed tomographic (CT) scanner. Using three-dimensional CT (3D-CT) angiography, reconstructions of the microvasculature of each specimen were produced and examined for their qualitative content. Two calibration tools were constructed to determine (1) the accuracy of linear measurements made with CT software tools, and (2) the smallest caliber blood vessel that is reliably represented on 3D-CT reconstructions. Three-dimensional CT angiography produced versatile, high quality angiograms of the microvasculature. Correlation between measurements made with electronic calipers and CT software tools was very high (Lin's concordance coefficient, 0.99 (95% CI 0.99-0.99)). The finest caliber of vessel reliably represented on the 3D-CT reconstructions was 0.4 mm internal diameter. In summary, 3D-CT angiography is a simple, accurate, and reproducible method that imparts a much improved perception of anatomy when compared with existing research methods. Measurement tools provide accurate quantitative data to aid vessel mapping and preoperative planning. Further work will be needed to explore the full utility of 3D-CT angiography in a clinical setting.