Safa E. Sharabi

Breast implant infections: Is cefazolin enough?

Background: Bacterial infection is a well-known risk of breast implant surgery, occurring in 2.0 to 2.5 percent of cosmetic cases and up to 20 percent of reconstructive cases. The Centers for Disease Control and Prevention recommends a first-generation cephalosporin for perioperative prophylaxis; however, no guidelines exist for the empiric treatment of established breast implant infections. A recent increase in methicillin-resistant Staphylococcus aureus infections has prompted interest in using alternative antibiotics with anti–methicillin-resistant S. aureus activity for both prophylactic and empiric therapy. The goal of the present study was to assess the bacteriology and antibiotic susceptibility of breast implant-related infections at two tertiary care hospitals in the Texas Medical Center to determine whether a baseline for empiric therapy for breast implant infections could be established. Methods: A retrospective review of patients who developed periprosthetic infections within 1 month after breast implant placement between 2001 and 2006 was completed. One hundred six patients with 116 infected breasts were identified. Patients were included in the study only if they had documented culture data. Results: Thirty-one breasts in 26 patients met inclusion criteria. Sixty-seven percent of the infected breasts had S. aureus infections; of these, 68 percent were methicillin-resistant S. aureus infections and 32 percent were methicillin-susceptible S. aureus infections. We noted Gram-negative rods and sterile cultures in 6 percent and 26 percent of breasts, respectively. Conclusions: Because of the high incidence of methicillin-resistant S. aureus infections in breast implant recipients, we believe that choosing an antibiotic with anti–methicillin-resistant S. aureus activity is justified for empiric treatment of breast implant infections, until culture and sensitivity data, if obtained, become available.

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.

Facial trauma: general principles of management.

Facial fractures are common problems encountered by the plastic surgeon. Although ubiquitous in nature, their optimal treatment requires precise knowledge of the most recent evidence-based and technologically advanced recommendations. This article discusses a variety of contemporary issues regarding facial fractures, including physical and radiologic diagnosis, treatment pearls and caveats, and the role of various synthetic materials and plating technologies for optimal facial fracture fixation.

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.

Local foreign-body reaction to commercial biodegradable implants: an in vivo animal study.

Biodegradable plates have been used extensively in fracture fixation since the 1960s. They rarely cause stress-protection atrophy or problems requiring secondary plate removal, common complications seen with metallic plates. However, aseptic foreign-body reactions have been reported, sometimes years after the original implantation. Both inadequate polymer degradation and debris accumulation have been implicated as causes. The current generation of commercial biodegradable plates is formulated to minimize this complication by altering the ratio of polylactic and polyglycolic acids. This in vivo study compares the degree of local foreign-body reaction of two commercially available resorbable plates in rabbits. Two types of biodegradable plates were examined: poly(D/L)lactide acid (PDLLA) and polylactide-co-glycolide acid (PLGA). Each plate was placed into a periosteal pericalvarial pocket created beneath the anterior or posterior scalp of a rabbit. Humane killing occurred at 3, 6, and 12 months postoperatively. Foreign-body reaction was evaluated histologically. The PDLLA plates demonstrated marked local foreign-body reactions within the implant capsule as early as 3 months after implantation, with presence of inflammatory cells and granulomatous giant cells in close association with the implant material. All local foreign-body reactions were subclinical with no corresponding tissue swelling requiring drainage. PLGA plates did not demonstrate any signs of inflammatory reactions. In addition, the PLGA plates did not appear to resorb or integrate at 12 months. Neither PDLLA nor PLGA plates demonstrated inflammation of the soft tissue or adjacent bone outside the implant capsule. In our study, the PDLLA plates demonstrated histological evidence of foreign-body reaction that is confined within the implant capsule, which was not seen with the PLGA plates. This finding may be attributable to the lack of significant resorption seen in the PLGA plates. Both PDLLA and PLGA plates were biocompatible with the rabbit tissue environment and should be considered for continued use in craniofacial, maxillofacial, and orthopedic reconstruction.

Mechanotransduction: The Missing Link in the Facial Aging Puzzle?

BackgroundCraniofacial bony remodeling has been recognized as an important contributor to the facial aging process. Multiple studies have demonstrated significant craniofacial skeletal changes with age. However, no review has assembled this information in a concise, cogent fashion. Furthermore, the etiology of these skeletal changes has not been elucidated. This information is important for understanding the mechanisms of facial aging and for further development of facial rejuvenation.MethodsA literature review of all articles discussing remodeling of the craniofacial skeleton with age was performed. Studies that used objective measurements of craniofacial skeletal parameters for different age groups were collected and analyzed.ResultsThe studies demonstrated consistent morphologic changes in the craniofacial skeleton with age. These changes included trends toward increased facial bony width in women; contour changes of the orbit, anterior maxilla, and mandibular body; and decreased dimensions of the glabellar, pyriform, and maxillary angles.ConclusionsThe craniofacial skeleton remodels with aging. Many of the observed changes in soft tissue contour and position reflect these skeletal changes. Changes in facial muscle function through the process of mechanotransduction may be responsible for these skeletal changes.

Surgical mission (not) impossible--now what?

International surgical missions, particularly those that address patients with clefts of the lip and palate, have become increasingly common. Numerous groups have been organized to provide these services. A plastic surgeon participating in these endeavors should have full knowledge of the details involved not just for himself but to maximize safety and optimize outcomes for these patients. An understanding of the issues surrounding trip preparation, the in-country logistics, proper preoperative patient selection, and intraoperative and postoperative issues are all essential to a successful experience. In this article, the authors review and discuss lessons learned from a combined total of more than 100 international trips. Relevant literature is reviewed, and additional pearls from this body of knowledge are presented.

The variable position of the ear in lambdoid synostosis.

Isolated unilateral lambdoid craniosynostosis is often confused with posterior positional plagiocephaly because of a general overlap in their clinical presentations; however, distinction between these 2 entities is important because of the differences in appropriate management. Historical literature teaches that ear position is posterior in lambdoid synostosis, whereas it is anterior in positional plagiocephaly. Recently, several cases of anterior ear position in isolated unilateral lambdoid synostosis presented to the Texas Childrens Hospital. A review of the cases and literature revealed that there are now 37 cases of unilateral lambdoid synostosis in the literature in which ipsilateral ear position is reported. Twelve cases (32%) had anteriorly displaced ears, 6 cases (16%) were nondisplaced, 7 cases (19%) were displaced posteriorly, 4 cases (11%) anteroinferiorly, 1 case (3%) inferiorly, and 7 cases (19%) posteroinferiorly. Based on this review, it seems that the diagnostic significance of the external ear position is unclear at this point.

Sunscreens: evolving aspects of sun protection.

www.jpedhc.org to subsequent risk of melanoma and other skin cancers (Kennedy, Bajdik, Willemze, De Gruijl, & Bouwes Bavinck, 2003). This finding is significant because the number of children who experience sunburns is staggering. One study demonstrated that 83% of children become sunburned during the summer, and approximately 36% of adolescents have repeated sunburns during the summer (Geller et al., 2002). Subsequent statistics regarding ultraviolet (UV)-related skin cancer are even more troubling. Within the United States, more than 1.3 million new cases of squamous cell and basal cell cancer occur every year, and more than 90% of these cases are caused by overexposure to UV radiation (American Cancer Society, 2009; Jemal et al., 2009). In 2009, the American Cancer Society reported that skin cancer was the most common form of cancer in the United States and that the incidence of new cases of skin cancer per year is greater than the combined incidence of breast, prostate, lung, and colon cancer. This morbidity has resulted in substantial health care costs, as statistics from 2004 have shown that direct costs for treating non-melanomatous skin cancer were estimated to be greater than

The Subtarsal Incision: Where Should It Be Placed?

1 billion, and greater than