A paradigm shift in correcting medial orbital fracture-related enophthalmos: volumetric augmentation through a lateral approach.

BACKGROUND: Posttraumatic enophthalmos resulting from medial orbital wall fractures presents a complex challenge. Access to this area through traditional incisions is limited, making visualization of the fracture site difficult. This can be ameliorated by the transcaruncular approach, but with the potential for complications both with access and with reconstructive materials. The authors sought a new technique where enophthalmos correction would be based on augmenting soft tissue volume, rather than reducing the volume of the bony orbital cone. This was successfully accomplished using porous high-density polyethylene wedges. In an effort to increase overall knowledge of this technique, a retrospective review was undertaken. METHODS: A retrospective chart review was undertaken to examine the senior authors' (J.F.T. and L.H.H.) experience using a lateral approach to address medial orbital fracture-related enophthalmos, aided by porous high-density polyethylene wedges to increase orbital volume. The relevant literature was reviewed and reported here. RESULTS: Three patients with post-medial orbital wall fracture enophthalmos were treated using a lateral approach to place porous high-density polyethylene wedges; this technique adequately corrected enophthalmos in these patients. CONCLUSIONS: Porous high-density polyethylene wedges can be placed into the orbit through a small lateral incision to reverse enophthalmos secondary to loss of volume after medial orbital wall fractures. Current techniques for orbital reconstruction typically focus on reduction of bony volume; this technique focuses on augmentation of soft tissue volume.

Optimizing pediatric interdental fixation by use of a paramedian palatal fixation site.

Condylar fractures are the most common injury seen in pediatric mandibular trauma. These injuries often cannot be adequately stabilized by conservative techniques such as splinting. The pediatric condyle fracture often requires a period of intermaxillary fixation. Because of the characteristics of the developing dentition, circumdental wiring is often not possible. Surgeons commonly achieve interdental stabilization by the connection of a circum-mandibular wire and a second wire placed through a drill hole in the piriform aperture. This method can be problematic in the young patient whose palatal suture is still patent. In this brief technical note, the use of a paramedian drill hole through the palate posterior to the maxillary incisors is described. It is believed that this method is superior to other techniques because it avoids injury to the deciduous tooth buds and allows for the maxillary wire to be seated in more structurally sound tissues.

A comparative, long-term assessment of four soft tissue substitutes.

BACKGROUND: The ideal product for soft tissue replacement is durable, nonimmunogenic, and noninfectious. AlloDerm (LifeCell Corp., Branchburg, New Jersey), Enduragen (Stryker Corp., Kalamazoo, Michigan), and DermaMatrix (Synthes, Inc., West Chester, Pennsylvania) are frequently used for soft tissue replacement, but comparative analysis of these materials over an extended time period has not been reported. DuraMatrix (bovine tendon matrix; Stryker Corp.) is also promising, demonstrating desirable properties not only as a dural substitute but also for soft tissue replacement. OBJECTIVES: The authors analyze in vivo gross and microscopic changes over time with four commercially available dermal matrices, utilizing the murine model for a controlled environment. METHODS: AlloDerm, Enduragen, DermaMatrix, and DuraMatrix implants measuring 1 × 1 cm were each implanted in 40 adult mice, in individual dorsal submuscular pockets. The mice were then sacrificed in groups of 10 at three, six, nine, and 12 months. The implants and surrounding tissues were excised and evaluated for gross and microscopic appearance. RESULTS: Histological analysis of the specimens demonstrated similar encapsulation, implant infiltration, and surrounding inflammation over time. Enduragen implants demonstrated the least amount of host cell infiltration, whereas AlloDerm demonstrated the most. Grossly, Enduragen maintained its original shape and became firmer over time, whereas AlloDerm became spherical and softer. DermaMatrix and DuraMatrix both maintained their original shape and consistency. Implant migration, explantation, infection, or allergic reactions were not noted. CONCLUSIONS: All of the materials studied demonstrated high levels of host tolerance and tissue integration. AlloDerm demonstrated signs of resorption, whereas Enduragen maintained its size and became firmer in consistency. Together with the histological results, this suggests a proportional relationship between the amount of host cell integration and implant resorption.

Is primary thinning of the anterolateral thigh flap recommended?

BACKGROUND: Although primary thinning of the anterolateral thigh (ALT) flap has been successful in Asia, clinical and anatomic studies have demonstrated that this may be inadvisable in Western patients. Recent reports have demonstrated successful thinning of the ALT using smaller flaps. A systematic review was attempted, to assess whether ALT size affects the incidence of vascular compromise after primary thinning. METHODS: A systematic review was undertaken to examine the relevant literature. Student t-test was used to compare flaps that did and did not have complications. Fisher exact test was used to compare outcomes of flaps measuring less than and greater than 150 cm2. RESULTS: Eleven articles met the inclusion criteria. Eighty-eight ALT flaps were reported, and vascular compromise was seen in 11 (12.5%). The average size of flaps that demonstrated necrosis was 180.73 cm2; those without necrosis averaged 123.19 cm2 (P = 0.06). Flaps >150 cm2 had a significantly increased rate of compromise (25.93% vs. 6.56%; P < 0.05). CONCLUSIONS: A systematic literature review confirms that it is inadvisable to primarily thin large ALT flaps in the Western population. When large ALT flaps are required, primary thinning must be avoided to keep linking vessels intact.

Contemporary management of pediatric facial trauma.

PURPOSE OF REVIEW: Facial fracture management is often complex and demanding, particularly within the pediatric population. Although facial fractures in this group are uncommon relative to their adult counterparts, a thorough understanding of issues relevant to pediatric facial fracture management is critical to optimal long-term success. RECENT FINDINGS: Children are not 'small adults', and the management of facial fractures in this population is unique. Injuries tend to be less severe, and can often be managed with soft diet and restriction of activity. Maxillomandibular fixation should be used only when indicated, as it can result in temporomandibular joint (TMJ) disturbances; to minimize this risk, it should be in place no longer than 7 days. Open reduction and internal fixation is indicated in severe injuries, and the surgeon must be cognizant of developing teeth. Small plates and screws are useful in this patient population. SUMMARY: In this review of modern management of the pediatric facial trauma patient, several issues germane to pediatric facial fractures are discussed. Thorough ophthalmologic and dental/occlusive examinations must be undertaken. Conservative management is optimal for many injuries, as the pediatric fracture is typically not as severe as those seen in the adult facial skeleton. When wiring the jaw to allow for noninvasive fixation, treatment time must be short in order to avoid TMJ ankylosis. Rigid fixation is indicated in the rare comminuted, displaced fracture; when employed, the surgeon must use small plates and screws, and avoid injury to developing teeth. These are challenging cases, but with appropriate knowledge and understanding, they can be appropriately managed.

Optimizing miniplate fixation for simple mandibular fractures.

SUMMARY: Optimal management of the mandible fracture is directly dependent on thorough evaluation, correct injury assessment, and timely initiation of appropriate therapy. As the mandible is a complex three-dimensional bone, significant structural differences in mandibular regions must be appreciated. While the small cross-section of the mandibular condyle imparts a particular vulnerability to injury, fractures of the angle, body, or symphyseal regions are associated with greater force and the potential for more complex injury. In conjunction with their video presentation, the authors discuss their approach to miniplate fixation of a symphyseal fracture.

External distraction osteogenesis in the pediatric mandible.

SUMMARY: Mandibular distraction osteogenesis is an effective tool with which to correct facial asymmetry, restore proper occlusion and, more importantly, create an appropriate airway in the micrognathic infant. As a component of many syndromes, micrognathia can impair feeding and speech development and can obstruct the neonatal airway. However, bony lengthening secondary to external mandibular distraction osteogenesis can provide added space, preventing oropharyngeal soft tissues from occluding the airway. Although external distraction of the mandible has been applied for more than a decade, this procedure often proves technically challenging. Here, as a supplement to their video presentation, the authors present a practical discussion of their current technique for mandibular distraction osteogenesis using an external device in a child with Treacher Collins syndrome.

Skin care in ethnic populations.

Use of over-the-counter cosmetics, approaches to hygiene, and many basic dermatologic principles differ between individuals with Caucasian skin and ethnic skin. Still, comparatively few publications highlight these variations or discuss appropriate management. Among many ethnic patients, issues related to skin hydration, restoration of even pigmentation, hair removal, and acne care remain problematic yet not fully addressed. As well, there are some dermatologic conditions that may be rare in Caucasian skin but are much more common in the ethnic patient. Here, we discuss various aspects of skin hydration, dyschromia, sunscreen use, and chemical depilatories in the ethnic population.

Laser therapy in ethnic populations.

Today, laser therapy is standard treatment for a wide variety of dermatologic complaints. From skin rejuvenation to the management of complex vascular malformations, laser treatment has proved to be an effective, innovative solution to once-challenging dilemmas. However, laser application in those with darker complexions remains a topic of great concern. Although contemporary devices may use longer-wavelength lasers and cooling devices to isolate target tissues within patients with high levels of epidermal melanin, significant risk remains. Today's laser surgeon must have a thorough understanding of patient concerns, lesion character and response to treatment, as well as the unique needs of those with darker skin. In this article, we discuss critical issues in patient assessment, proper evaluation of common skin complaints, and laser therapy use for a variety of lesions in the ethnic population.

Keloids: pathogenesis, clinical features, and management.

Cutaneous wound healing is a complex response to skin injury. Deregulation of this process can lead to excessive scar formation, as seen in keloids. Keloids are common skin lesions that are difficult to treat and are associated with high recurrence rates despite the large number of available treatment options. With increased knowledge of the disease process and further scientific advancements, future approaches will hopefully improve keloid treatment. In this article, we review the epidemiology, genetic basis, etiology, clinical features, pathogenesis, and management of keloids.

Laser treatment of pediatric vascular lesions.

Since its introduction in 1967, laser therapy has benefited patients and physicians alike. After the first clinical application by Goldman (Anderson RR, Parrish JA. Science 1983;220:524-527), laser therapy has become indispensable in the management of vascular birthmarks. In selecting a proper balance of wavelength, pulse duration, and energy density (fluence), the physician can mold laser energy to effectively manage lesions once considered untreatable. Now, the vast array of lesions amenable to laser therapy continues to expand. By advancing our understanding of both laser technology and vascular lesion biology, the goal of providing optimal clearance with minimal morbidity moves ever closer.