Faculty Bibliography

PURPOSE/OBJECTIVE:Open cranial vault remodeling (CVR) with autologous split calvarial bone grafts redistributes and recontours an abnormal calvarium to create an expanded cranial vault in patients with craniosynostosis. We report a 12-year retrospective review of 162 nonsyndromic patients who underwent operative repair using our previously-described technique which portends excellent surgical outcomes and can be applied to patients of any age group and with any variety of suture fusion. METHODS:Data was gathered on patients who underwent CVR from 2005 to 2016. Surgical records for each patient were analyzed and included operative time, estimated blood loss, and intraoperative transfusion volumes. Intraoperative and postoperative complications, the need for revision surgery, postoperative length of stay, and follow-up records were also reviewed. Syndromic patients were excluded, as well as patients with incomplete data sets. Patients who underwent either anterior or posterior vault remodeling were compared. RESULTS:A total of 162 patients were included in this case series. Patients undergoing anterior CVR were significantly older than those undergoing posterior CVR (13.3 versus 11.0 months, P < 0.015) and also had significantly greater intraoperative red blood transfusion volumes (20.3 versus 15.3cc/kg, P < 0.0207) and longer operative time than posterior CVR patients (274.9 versus 216.7 minutes, P < 0.0001). No patients required reoperation for resorption or recurrence or persistent contour irregularities. There were no visual or neurological complications. Calvarial bone was successfully split in 100% of cases. CONCLUSIONS:This surgical approach to CVR results in good surgical outcomes with a low recurrence rate, while also maximizing operative efficiency, and minimizing total blood loss and transfusion volume. This technique can be applied to any affected suture in a patient with craniosynostosis and in patients of any age group.

BACKGROUND:Spring-assisted surgery (SAS) is an accepted alternative to cranial vault remodeling (CVR) for treatment of sagittal craniosynostosis. The long-term safety and efficacy profiles of SAS have not been established. METHODS:This study is a retrospective exam of all patients treated with SAS (n=175) or CVR (n=50) for sagittal craniosynostosis at our institution from 2003-2017. Data collected includes demographic and operative parameters, pre- and post-operative cephalic indices, and complications. Whitaker grades were assigned blindly by a craniofacial surgeon not involved in patients' care. RESULTS:The mean age at surgery was significantly lower for the SAS compared with CVR group (4.6 vs 22.2 months, p<0.001). Even when combining spring placement with spring removal operations, total surgical time (71.1 vs 173.5 min), blood loss (25.0 vs 111.2 mL) and hospital stays (41.5 vs 90.0 hrs.) were significantly lower for the SAS cohort vs the CVR group (p<0.001 for all). There were no differences in infection, re-operation rate, or headaches between the groups. The percent improvement in cephalic index (CI) was not significantly different at 1- (p=0.13), 2- (p=0.99), and 6- (p=0.86) years post-operatively. At 12 years post-operatively the SAS group had persistently improved CI (75.7 vs 70.7 pre-op). Those receiving SAS had significantly better Whitaker scores indicating lesser need for revisionary surgery, compared with the CVR group (p=0.006). CONCLUSIONS:Compared with our CVR technique, SAS requires less OR time with less blood loss, but has equivalent long term cephalic indices and subjectively better shape outcomes.

BACKGROUND: Given the relatively small size of thigh-based flaps and the possible necessity for a multiflap reconstruction, it is imperative to arrive at an accurate estimation of flap weight during preoperative planning. It was our objective to develop a novel technique for the preoperative estimation of profunda artery perforator (PAP) flap weight. METHODS: All patients that underwent transverse PAP flap breast reconstruction at two institutions were retrospectively reviewed. Subcutaneous tissue thicknesses were measured on axial computed tomography angiography scans at several predetermined points. The distance from the inferior gluteal crease to the PAP was also recorded. Linear regression was used to estimate flap weight. RESULTS:has a value of 1 if the patient was scanned in the supine position or 0 if prone. The aforementioned formula yielded a median estimated flap weight of 305 g (IQR: 234-402) and a median percent error of 10.5% (IQR: 6.1-16.2). CONCLUSION/CONCLUSIONS: The authors demonstrate a simple and accurate formula for the preoperative estimation of transverse PAP flap weight for breast reconstruction.

Migraine is commonly reported among patients with temporomandibular disorders (TMDs), especially myogenic TMD. The pathophysiologic mechanisms related to the comorbidity of the two conditions remain elusive. In the present study, we combined masseter muscle tendon ligation (MMTL)-produced myogenic TMD with systemic injection of nitroglycerin (NTG)-induced migraine-like hypersensitivity in mice. Facial mechanical allodynia, functional allodynia, and light-aversive behavior were evaluated. Sumatriptan, an FDA-approved medication for migraine, was used to validate migraine-like hypersensitivity. Additionally, we examined the protein level of calcitonin gene-related peptide (CGRP) in the spinal trigeminal nucleus caudalis using immunohistochemistry. We observed that mice with MMTL pretreatment have a prolonged NTG-induced migraine-like hypersensitivity, and MMTL also enabled a non-sensitizing dose of NTG to trigger migraine-like hypersensitivity. Systemic injection of sumatriptan inhibited the MMTL-enhanced migraine-like hypersensitivity. MMTL pretreatment significantly upregulated the protein level of CGRP in the spinal trigeminal nucleus caudalis after NTG injection. Our results indicate that a pre-existing myogenic TMD can upregulate NTG-induced trigeminal CGRP and enhance migraine-like hypersensitivity.

INTRODUCTION/BACKGROUND:Abdominoplasty is currently one of the most widely requested cosmetic procedures in the United States. There is limited literature describing the corrective measures following skin loss from a flap necrosis due to an abdominoplasty complication. METHODS:A 53-year-old female presented with a large split thickness skin graft due to skin loss as a necrotic complication from an abdominoplasty performed at our center. The patient suffered from emotional stress related to the abdominal deformity, which included a lack of an umbilicus. RESULTS:Patient recovered well post-operatively. She required two procedures - the initial procedure involved excision of the skin graft and closure with the patient's own full-thickness skin and tissue. The second procedure, which occurred six months later, involved the creation of an umbilical stalk from a small cuff of skin. CONCLUSION/CONCLUSIONS:Abdominoplasty, although sought for cosmetic purposes, is indeed a major procedure and can result in complications especially from aggressive liposculpture. When complications do occur, revisions are indeed possible with aesthetically pleasing results.

The worldwide outbreak of coronavirus disease 2019 (COVID-19) has forced healthcare systems across the United States to undertake broad restructuring to address the ongoing crisis. The framework of crisis management can assist plastic surgeons navigate the dynamic environment of the COVID-19 pandemic. This manuscript outlines crisis management tools at a number of different levels, from hospital-wide to plastic surgeon-specific, and it offers a practical discussion of the coronavirus situation as it affects plastic surgeons. While there are innumerable ways that this virus is currently changing plastic surgeons' practices, it is crucial to remember that these changes are temporary, and they will be best met by being confronted head-on.

Whether G protein-coupled receptors signal from endosomes to control important pathophysiological processes and are therapeutic targets is uncertain. We report that opioids from the inflamed colon activate δ-opioid receptors (DOPr) in endosomes of nociceptors. Biopsy samples of inflamed colonic mucosa from patients and mice with colitis released opioids that activated DOPr on nociceptors to cause a sustained decrease in excitability. DOPr agonists inhibited mechanically sensitive colonic nociceptors. DOPr endocytosis and endosomal signaling by protein kinase C (PKC) and extracellular signal-regulated kinase (ERK) pathways mediated the sustained inhibitory actions of endogenous opioids and DOPr agonists. DOPr agonists stimulated the recruitment of Gα_i/o and β-arrestin1/2 to endosomes. Analysis of compartmentalized signaling revealed a requirement of DOPr endocytosis for activation of PKC at the plasma membrane and in the cytosol and ERK in the nucleus. We explored a nanoparticle delivery strategy to evaluate whether endosomal DOPr might be a therapeutic target for pain. The DOPr agonist DADLE was coupled to a liposome shell for targeting DOPr-positive nociceptors and incorporated into a mesoporous silica core for release in the acidic and reducing endosomal environment. Nanoparticles activated DOPr at the plasma membrane, were preferentially endocytosed by DOPr-expressing cells, and were delivered to DOPr-positive early endosomes. Nanoparticles caused a long-lasting activation of DOPr in endosomes, which provided sustained inhibition of nociceptor excitability and relief from inflammatory pain. Conversely, nanoparticles containing a DOPr antagonist abolished the sustained inhibitory effects of DADLE. Thus, DOPr in endosomes is an endogenous mechanism and a therapeutic target for relief from chronic inflammatory pain.

Systemic and structural barriers limit dental health for individuals with special healthcare needs (SHCN), who have poorer dental hygiene, higher rates of dental disorders, and less access to oral care. We aimed to understand these barriers directly from the patient and caregiver population as well as review the literature on oral health of individuals with SHCN. We reviewed the literature on individuals and caregivers of those with SHCN to identify barriers to dental healthcare faced by these individuals. We focused on clinical and educational interventions to support clinicians treating this population. For the literature review, PubMed, Google, and Google Scholar were searched. We also relied upon the knowledge gained during the course of routine clinical care and patient advocacy activities. Published manuscripts were searched for the following Medical Subject Heading (MeSH) term: "Dental Care for Disabled" and the following subheading: pharmacology, adverse effects, ethics, methods, standards, and therapy. Relatively few dentists have formal training on caring for those with SHCN. Barriers faced by these individuals include accessibility, comorbidities, communication challenges, and barriers to home oral hygiene. Strong care coordination and communication between dentists, caregivers, and other providers is essential for positive outcomes. Our current dental healthcare system has failed to meet the needs of those with SHCN. The comfort and dignity of the patient are of paramount importance.