RESUMO
BACKGROUND: Pressure ulceration, pyogenic arthritis, and hip heterotopic ossification are complications encountered in spinal cord injury patients. The Girdlestone procedure has been established as an effective treatment modality for hip pathology in this population and is particularly efficacious when a muscle flap is used to fill the femoral resection defect. We previously reported its use as a 3-stage procedure. Through time, experience was gained, and consequently, our technique has evolved to a 1-stage procedure. METHODS: A retrospective analysis of all spinal cord injury patients who had undergone Girdlestone arthroplasty or excision of heterotopic ossification by the pressure ulcer management team at Rancho Los Amigos National Rehabilitation Center between 1991 and 2005 was performed. A description of our management, operative protocol, outcome, and complication is given. RESULTS: Over 15 years (between 1991 and 2005), 295 patients underwent 330 procedures. Hips were operated for infection, heterotopic ossification, pressure ulceration, dislocation, femoral head necrosis, or fracture or a combination of the above. Twenty-five cases (7.6%) required surgical revision for wound breakdown in the immediate postoperative period. Average follow-up was 40.3 months; 43.6% of patients developed recurrence of ulceration requiring surgery. The average time until recurrence was 27.3 months. CONCLUSIONS: The Girdlestone arthroplasty is an effective modality to treat hip infection, ankylosis, heterotopic ossification, dislocation, or other pathology associated with the spinal cord injury patient. Long-term follow-up of a large patient population reveals the efficacy of the procedure in preventing recurrence and improving patient quality of life.
Assuntos
Artroplastia/métodos , Articulação do Quadril/cirurgia , Ossificação Heterotópica/cirurgia , Procedimentos de Cirurgia Plástica/métodos , Úlcera por Pressão/cirurgia , Traumatismos da Medula Espinal/complicações , Retalhos Cirúrgicos , Adolescente , Adulto , Idoso , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Ossificação Heterotópica/etiologia , Úlcera por Pressão/etiologia , Reoperação/estatística & dados numéricos , Estudos Retrospectivos , Resultado do Tratamento , Adulto JovemRESUMO
BACKGROUND: As social media have become pervasive in contemporary society, plastic surgery content has become commonplace. Two of the most engaging and popular platforms are Instagram and Twitter, and much research has been performed with respect to Twitter. Currently, there are no studies comparing and contrasting the two platforms. The aim of this study was to robustly sample plastic surgery posts on Twitter and Instagram to quantitatively and qualitatively evaluate platform content differences. METHODS: The hashtag #PlasticSurgery was systematically queried twice per day, for 30 consecutive days, on Twitter and Instagram. Account type, specific media content, possible patient-identifying information, content analysis, and post engagement were assessed. Post volume and engagement between Instagram and Twitter posts were compared. Post characteristics garnering high engagement from each platform were also evaluated. RESULTS: A total of 3867 Twitter posts and 5098 Instagram posts were included in this analysis. Daily total post volume for the 1-month duration of the study was significantly higher on Instagram compared with Twitter. Overall post engagement was significantly higher on Instagram compared with Twitter. Plastic surgeons and plastic surgery clinics represented the majority of accounts posting on both platforms with #PlasticSurgery. Identifiable patient features were much more prevalent on Instagram. The majority of Instagram posts were promotional in nature, outcome-based, or unrelated to plastic surgery. Alternatively, tweets were predominantly educational in nature. CONCLUSIONS: For physicians to harness the power of social media in plastic surgery, we need to understand how these media are currently being used and how different platforms compare to one another. This study has highlighted the inherent similarities and differences between these two highly popular platforms.
Assuntos
Marketing de Serviços de Saúde/estatística & dados numéricos , Procedimentos de Cirurgia Plástica/economia , Mídias Sociais/estatística & dados numéricos , Cirurgiões/estatística & dados numéricos , Estudos Transversais , Humanos , Marketing de Serviços de Saúde/métodos , Preferência do Paciente , Estudos Prospectivos , Mídias Sociais/economia , Cirurgiões/economiaRESUMO
Osteoblast biology is influenced in vivo by a 3-dimensional (3D) extracellular matrix that mediates their adhesion and interaction and by a constant state of compressive and tensile forces. To study the role of mechanical stress on osteoblasts in vitro, these parameters must be addressed. Therefore, this study describes the use of a novel, in vitro system that subjects cells to distractive and compressive forces in a 3D environment. This system, termed a microdistractor system, was used to apply linear forces to 3D collagen type I gels containing preosteoblasts. Gels were induced for up to 16 days in osteogenic medium and subjected to either constant linear distraction (distraction gels) or to repeating cycles of distraction and compression (oscillation gels). The effect of these stresses was evaluated over time by measuring proliferation rates, protein synthesis (i.e., cellular activity), and osteogenic differentiation levels. While linear forces in general appeared to increase protein synthesis, force-specific effects on proliferation and differentiation were observed. Specifically, distraction forces appeared to enhance MC3T3 proliferation while distraction/compressive forces appeared to accelerate their osteogenic differentiation program. Therefore, these results suggest that the microdistraction system may be an appropriate in vitro system for the study of mechanobiology in osteoblast phenotype.
Assuntos
Diferenciação Celular/fisiologia , Fibroblastos/fisiologia , Microdissecção/métodos , Osteoblastos/fisiologia , Células 3T3 , Fosfatase Alcalina/metabolismo , Animais , Contagem de Células , Colágeno Tipo I/química , Meios de Cultura/química , Desenho de Equipamento , Fibroblastos/metabolismo , Géis/química , Camundongos , Técnicas de Cultura de Órgãos , Osteoblastos/citologia , Osteogênese/fisiologia , Biossíntese de Proteínas , Estresse Mecânico , Fatores de TempoRESUMO
BACKGROUND: Fibrous dysplasia is the most common craniofacial tumor, presenting in both monostotic and polyostotic forms with varying degrees of severity. No consensus exists regarding the surgical management of craniofacial fibrous dysplasia, particularly in the zygomaticomaxillary region. The present study compared long-term outcomes of limited reduction burring versus radical resection of zygomaticomaxillary fibrous dysplasia. METHODS: Patients with craniofacial fibrous dysplasia at the University of California, Los Angeles, Craniofacial Center from 1982 to 2008 were studied based on demographics, treatment, and follow-up data, including examinations, computed tomographic scans, photographs, physician Whitaker scoring, and patient surveys (n=97). Outcomes were compared for zygomaticomaxillary disease treated with radical resection with cranial bone graft reconstruction or limited reduction burring (n=58). RESULTS: Thirty-four percent of patients had monostotic disease, 66 percent had polyostotic disease, 3 percent had McCune-Albright syndrome, and 2.1 percent had malignant degeneration into osteosarcoma. Most patients had surgical treatment (84.5 percent). Of the patients that required optic nerve decompression for vision changes (11.4 percent), most (75 percent) had vision stabilization postoperatively. Differences were recorded in zygomaticomaxillary disease treated with radical resection (63.8 percent) versus reduction burring (36.2 percent) according to age (19.6 versus 14.2 years), complications (13.5 percent versus 4.8 percent), recurrence (66.7 percent versus 24.3 percent), and number of subsequent procedures (2.8 versus 4.0). There were similarities in Whitaker outcome score (1.3±0.3 versus 1.5±0.6) and patient satisfaction (2.7±0.4 versus 2.8±0.3). CONCLUSIONS: Although different approaches have been advocated to treat fibrous dysplasia, the authors' data support a more aggressive management for zygomaticomaxillary disease with radical resection and cranial bone graft reconstruction, especially for more involved disease. CLINICAL QUESTION OF EVIDENCE: Therapeutic, III.
Assuntos
Displasia Fibrosa Monostótica/cirurgia , Displasia Fibrosa Poliostótica/cirurgia , Doenças Maxilares/cirurgia , Zigoma/cirurgia , Adolescente , Adulto , Transplante Ósseo/métodos , Criança , Comportamento Cooperativo , Descompressão Cirúrgica , Feminino , Displasia Fibrosa Monostótica/diagnóstico , Displasia Fibrosa Poliostótica/diagnóstico , Humanos , Comunicação Interdisciplinar , Masculino , Doenças Maxilares/diagnóstico , Síndromes de Compressão Nervosa/cirurgia , Doenças do Nervo Óptico/cirurgia , Osteossarcoma/diagnóstico , Osteossarcoma/cirurgia , Fotografação , Complicações Pós-Operatórias/diagnóstico , Complicações Pós-Operatórias/etiologia , Tomografia Computadorizada por Raios X , Resultado do Tratamento , Acuidade Visual , Adulto Jovem , Zigoma/patologiaAssuntos
Anomalias dos Vasos Coronários/complicações , Infarto do Miocárdio/etiologia , Insuficiência Respiratória/etiologia , Ferimentos e Lesões/complicações , Acidentes de Trânsito , Adulto , Cateterismo Cardíaco , Anomalias dos Vasos Coronários/diagnóstico por imagem , Vasos Coronários , Fíbula/lesões , Fixação Intramedular de Fraturas , Insuficiência Cardíaca/diagnóstico , Insuficiência Cardíaca/etiologia , Insuficiência Cardíaca/terapia , Humanos , Balão Intra-Aórtico , Masculino , Infarto do Miocárdio/diagnóstico por imagem , Infarto do Miocárdio/terapia , Radiografia , Fraturas da Tíbia/complicações , Fraturas da Tíbia/cirurgia , Centros de Traumatologia , População UrbanaAssuntos
Braquetes , Articulação do Cotovelo/cirurgia , Antebraço/cirurgia , Procedimentos Ortopédicos/instrumentação , Implantação de Prótese/instrumentação , Tendinopatia/cirurgia , Adulto , Articulação do Cotovelo/fisiopatologia , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Desenho de Prótese , Amplitude de Movimento Articular , Estudos Retrospectivos , Tendinopatia/fisiopatologia , Resultado do TratamentoRESUMO
BACKGROUND: Reconstruction of the heel represents a difficult challenge for surgeons, given the demand for thick, durable skin capable of withstanding both pressure and shear. The authors describe the use of a sensate medial plantar flap for heel reconstruction in three patients and document the long-term retention of sensation compared with the contralateral uninjured heel and corresponding donor site. METHODS: A medial plantar flap was harvested to include the branch of the medial plantar nerve to the instep to preserve innervation. Sharp pain, light and deep pressure, vibration, cold temperature, and static and dynamic two-point discrimination were examined between 6 months and 1 year after surgery. RESULTS: Sharp pain, vibration, and deep pressure sensation were present equally in the medial plantar flap, contralateral heel, and contralateral instep. Cold perception, light pressure, and static two-point and dynamic two-point discrimination were significantly less in the normal contralateral heel when compared with the heel reconstructed by the innervated flap. There were no significant differences in sensation between the medial plantar flap and the contralateral instep. CONCLUSIONS: The medial plantar flap is capable of providing durable, sensate coverage of plantar hindfoot defects with minimal donor-site morbidity. Furthermore, that sensation remains identical to that of the instep donor site and superior to that of the normal heel pad.
Assuntos
Fíbula/lesões , Doenças do Pé/cirurgia , Retalhos de Tecido Biológico/inervação , Calcanhar/cirurgia , Melanoma/cirurgia , Idoso de 80 Anos ou mais , Desbridamento , Feminino , Retalhos de Tecido Biológico/fisiologia , Humanos , Masculino , Pessoa de Meia-Idade , Pressão , Procedimentos de Cirurgia Plástica/métodos , Sensação , Lesões dos Tecidos Moles/cirurgia , TatoRESUMO
BACKGROUND: Recent studies have shown that bone morphogenetic protein (BMP)-2, a potent osteogenic growth factor, in combination with human adipose-derived stem cells can heal critical-sized bony defects. However, whether BMP-2 induces an osteogenic response in the adipose-derived stem cells remains unknown. METHODS: : In vitro calcium production, osteogenic gene expression, and BMP-2 receptor expression on the adipose-derived stem cell surface were analyzed in BMP-2-stimulated adipose-derived stem cells. The cells (2 x 10(7) cells) maintained in osteogenic medium were treated with an initial pulse of BMP-2 for 48 hours or 7 days or were given continuous BMP-2. To assess the response of these cells to BMP-2 in vivo, they (250,000 cells) were seeded into polylactic-co-glycolic acid (PLGA) collagraft scaffolds treated with 5 microg of BMP-2 and implanted into critical-sized femoral rat defects (n = 40). Healing was assessed histologically and quantitated by micro-computed tomography. RESULTS: In vitro treatment of adipose-derived stem cells with BMP-2 revealed decreased ability of the cells to undergo matrix calcification, demonstrated by decreased calcium production and decreased osteogenic gene expression of transcription factor Cbfa-1 and key extracellular proteins. Flow cytometry demonstrated decreased expression of BMP-2 receptors 1a and 1b in osteogenically differentiated adipose-derived stem cells stimulated with BMP-2. In vivo implantation of adipose-derived stem cell-seeded PLGA did not result in healing of critical-sized femoral defects in rodents, whereas implantation of BMP-2-absorbed PLGA, with or without adipose-derived stem cells, consistently healed these defects. CONCLUSIONS: The data suggests that osteogenic differentiation of adipose-derived stem cells is marginally affected by the addition of BMP-2. Consequently, stem cells in combination with BMP-2 may not be a viable strategy for the bony healing.
Assuntos
Proteína Morfogenética Óssea 2/farmacologia , Regeneração Óssea/efeitos dos fármacos , Peptídeos e Proteínas de Sinalização Intercelular/farmacologia , Células-Tronco Mesenquimais/efeitos dos fármacos , Osteogênese/efeitos dos fármacos , Tecido Adiposo , Animais , Diferenciação Celular/efeitos dos fármacos , Células Cultivadas , Humanos , Ratos , Células-Tronco/efeitos dos fármacosRESUMO
BACKGROUND: Controversy abounds as to how craniosynostosis affects intracranial volume and whether more extensive procedures achieve superior results. Intracranial volume and cephalic index were evaluated among nonsyndromic sagittal synostosis patients undergoing cranioplasty. METHODS: Twenty-four children with isolated nonsyndromic sagittal synostosis underwent a total calvarial reconstruction. Volume and cephalic index measurements were taken 1 month preoperatively, 1 month postoperatively, and at 1-year follow-up. Data obtained were compared against normative value curves, and interval shifts between curve SD ranges were noted. The absolute percentage difference between the observed intracranial volume or cephalic index and the correlated normative mean value (absolute mean percentages) was calculated for each scan. RESULTS: Preoperatively, intracranial volume for patients younger than 30 months (n = 19) was within the normal range (+/-1 SD), whereas it exceeded 1 SD in all patients older than 30 months (n = 5). Postoperatively and at follow-up, intracranial volume range was unchanged for patients younger than 30 months but was decreased to normal for 60 percent of those older than 30 months. Absolute mean volume percentage showed a small increase from preoperatively for patients younger than 12 months (p < 0.05), no change for patients aged 12 and 30 months, and decreased for patients older than 30 months (p < 0.05). Postoperatively, all patients demonstrated a normal intracranial volume growth rate. As for cephalic index, preoperatively, 92 percent of patients fell below the minimum normal values. At follow-up, 100 percent had a cephalic index in the normal range (p < 0.05). CONCLUSIONS: Nonsyndromic sagittal synostosis results in an age-dependent increased intracranial volume and decreased cephalic index. Total calvarial reconstruction (1) appears to allow for the expansile forces of the growing brain to be distributed and may relieve an underlying abnormality; (2) does not affect postoperative intracranial volume growth rate; and (3) enables normalization of cephalic index.
Assuntos
Cefalometria , Craniossinostoses/diagnóstico , Craniossinostoses/cirurgia , Procedimentos de Cirurgia Plástica , Crânio/diagnóstico por imagem , Criança , Pré-Escolar , Craniotomia , Humanos , Imageamento Tridimensional , Lactente , Crânio/crescimento & desenvolvimento , Crânio/cirurgia , Tomografia Computadorizada por Raios XRESUMO
BACKGROUND: In older cleft patients, alveolar bone grafting may be associated with poor wound healing, graft exposure, recurrent fistula, and failure of tooth eruption. A new procedure using a resorbable collagen matrix with bone morphogenetic protein (BMP)-2 was compared with traditional iliac crest bone graft to close alveolar defects in older patients. METHODS: Skeletally mature patients with an alveolar cleft defect undergoing alveolar cleft repair were divided into either group 1 (BMP-2, experimental) or group 2 (traditional iliac graft, control) (n = 21). Bone healing was assessed with intraoral examination and NewTom scans (three-dimensional, Panorex, periapical films). Donor-site morbidity was determined with pain surveys. Overall cost and length of hospital stay were used to examine economic differences. RESULTS: Preoperative and follow-up (1 year) intraoral examinations revealed fewer complications (11 percent versus 50 percent) and better estimated bone graft take in group 1 compared with group 2. Panorex and three-dimensional computed tomographic scans showed enhanced mineralization in group 1 compared with group 2. Volumetric analysis showed group 1 had a larger percentage alveolar defect filled with new bone (95 percent) compared with group 2 (63 percent). Donor-site pain intensity and frequency were significant in group 2 but not group 1. The mean length of stay was greater for group 2 compared with group 1. In addition, the mean overall cost of the procedure was greater in group 2 ($21,800) compared with group 1 ($11,100). CONCLUSIONS: For this select group of late-presenting alveolar cleft patients, the BMP-2 procedure resulted in improved bone healing and reduced morbidity compared with traditional iliac bone grafting.
Assuntos
Processo Alveolar/efeitos dos fármacos , Proteínas Morfogenéticas Ósseas/administração & dosagem , Fissura Palatina/tratamento farmacológico , Fissura Palatina/cirurgia , Peptídeos e Proteínas de Sinalização Intercelular/administração & dosagem , Fator de Crescimento Transformador beta/administração & dosagem , Ferimentos e Lesões/tratamento farmacológico , Administração Tópica , Adolescente , Processo Alveolar/cirurgia , Proteína Morfogenética Óssea 2 , Transplante Ósseo , Feminino , Consolidação da Fratura/efeitos dos fármacos , Humanos , Ílio/cirurgia , Masculino , Cicatrização/efeitos dos fármacosRESUMO
BACKGROUND: A strong association between fibroblast growth factors (FGFs) and palatal anatomy suggest their role in proper palatal development. The purpose of this study was to establish whether fibroblast growth factor signaling is essential for normal palate development, improve the understanding of the biology of palatal fusion, and create a new in vitro cleft palate model. METHODS: Palatal pairs excised from embryonic day 13.5 mouse palatal shelves were divided into three equal groups (n = 18 pairs) and cultured with the nasal side down and their medial edge epithelia in close apposition. Controls received vehicle only (n = 6 pairs) or LacZ recombinant virus (n = 6 pairs). The experimental group (n = 6 pairs) received truncated FGF-R1 recombinant virus with hemagglutinin epitope tag (1 x 10(9) plaque-forming units), which abrogated signal transduction by FGF-R1, FGF-R2, and FGF-R3. Tissue sectioning and staining was used to assess palatal continuity at 96 hours and immunohistochemistry was used to localize expression of the truncated receptors. RESULTS: Both groups 1 (control, vehicle only) and 2 (LacZ) showed complete fusion of palatal shelves after 96 hours in five of six specimens and near fusion in the remaining specimen. Beta-galactosidase staining indicated effective delivery of the LacZ virus to targeted epithelial cells. None of the group 3 specimens (FGF-R1) showed histologic resolution of the medial edge epithelia seam. Immunohistochemistry for the hemagglutinin epitope tag indicated infection by the truncated FGF-R1 virus throughout the epithelium and mesenchyme of the epithelium. CONCLUSION: By abrogating signal transduction by FGF-R1, FGF-R2, and FGF-R3, the authors have demonstrated that such signaling is essential for normal mammalian palate development.
Assuntos
Fissura Palatina/tratamento farmacológico , Receptor Tipo 1 de Fator de Crescimento de Fibroblastos/fisiologia , Cicatrização/efeitos dos fármacos , Animais , Modelos Animais de Doenças , Camundongos , Camundongos Endogâmicos , Técnicas de Cultura de Órgãos , Palato/efeitos dos fármacos , Palato/patologia , Palato/fisiopatologia , Transdução de SinaisRESUMO
Chiari I malformation occurs when the cerebellar tonsils herniate downward through the foramen magnum into the upper cervical spinal canal. If the posterior fossa craniectomy during corrective surgery leads to excessive enlargement of the foramen magnum, the complication of cerebellar ptosis may result. To treat this difficult problem a posterior cranial fossa box expansion was devised and studied. Patients who developed symptomatic cerebellar ptosis (confirmed by MRI) following cranial vault decompression for Chiari I malformations underwent a posterior fossa box expansion (n=7). This procedure involved coverage of posterior aspect of the enlarged foramen magnum with a split-thickness calvarial bone graft box. The box reconstruction provided separation between the neck musculature, soft tissues from the neural tissue; prevention of cerebellar prolapse; and expansion of the posterior cranial vault. Patients had a mean of 12+/-1 months between initial suboccipital craniectomy and confirmation of symptomatic cerebellar ptosis. Mean age at the time of posterior fossa box reconstruction was 31+/-9 years (range of 14 to 44 years). Preoperative symptoms of headache (7/7, 100%), upper extremity numbness (5/7, 71%) or paresthesias (3/7, 43%), respiratory disturbance (2/7, 29%) and inability to walk (2/7, 29%) improved in all patients postoperatively. At more than 12 month follow-up 6/7 patients (86%) were both disease-free (MRI confirmation) and symptom-free. One out of seven patients had return of headache in a more mild form. Thus, in our patient group the posterior fossa box reconstruction led to resolution of symptomatic cerebellar ptosis following Chiari I malformation repair.
Assuntos
Malformação de Arnold-Chiari/cirurgia , Cerebelo/cirurgia , Fossa Craniana Posterior/cirurgia , Craniotomia/efeitos adversos , Descompressão Cirúrgica/efeitos adversos , Adolescente , Adulto , Transplante Ósseo , Craniotomia/métodos , Cefaleia/etiologia , Cefaleia/cirurgia , Humanos , Imageamento por Ressonância Magnética , Siringomielia/etiologia , Siringomielia/cirurgiaRESUMO
BACKGROUND: Hard palate cleft closure has been associated with maxillary hypoplasia. The Schweckendiek procedure offers delayed hard palate closure to avoid early subperiosteal dissection and palatal scarring. This study sought to compare single-stage versus delayed hard palate closure for speech outcome and maxillary growth. METHODS: A retrospective outcome study was performed of unilateral cleft lip and palate patients with either delayed hard palate repair with a pinned-retained speech prosthesis (Schweckendiek repair) (group 1, delayed hard palate repair, 1978 to 1983) or single-stage cleft palate repair (group 2, single-stage repair, 1983 to 1988). Patients with complete records to maturity at the University of Pittsburgh Cleft Palate Craniofacial Center (n = 82, two equal groups of 41 patients) were studied. Comparative data were collected from multidisciplinary evaluations, perceptual speech scores, speech tests, and cephalometric analysis. RESULTS: Single-stage cleft palate repair had a lower fistulization rate (11 percent) compared with delayed hard palate repair (58 percent). It also had better speech outcomes compared with delayed hard palate repair: mean speech score, 3.1 versus 7.8; final speech score, 0.9 versus 2.9; velopharyngeal incompetency, 21 percent versus 66 percent; failed video fluoroscopy or nasoendoscopy, 18 percent versus 52 percent; and need for secondary speech procedure, 20 percent versus 63 percent. Single-stage repair showed less maxillary growth disturbance, with class III malocclusion, 31 percent versus 66 percent; cephalometric SNA, 78.2 versus 74.8; need for Le Fort I advancement, 24 percent versus 42 percent; and amount of maxillary advancement required, 6 mm versus 9 mm. CONCLUSION: The delayed cleft palate repair led to worse speech outcomes; thus, the authors' center abandoned this technique in favor of single-stage repair. In addition, their data showed that the delayed cleft palate repair led to deleterious maxillary growth.
Assuntos
Fenda Labial/cirurgia , Fissura Palatina/cirurgia , Osteotomia de Le Fort/métodos , Procedimentos de Cirurgia Plástica/métodos , Insuficiência Velofaríngea/prevenção & controle , Anormalidades Múltiplas/diagnóstico , Anormalidades Múltiplas/cirurgia , Criança , Fenda Labial/diagnóstico , Fissura Palatina/diagnóstico , Feminino , Seguimentos , Humanos , Lactente , Masculino , Desenvolvimento Maxilofacial , Osteotomia de Le Fort/efeitos adversos , Probabilidade , Procedimentos de Cirurgia Plástica/efeitos adversos , Estudos Retrospectivos , Medição de Risco , Distúrbios da Fala/etiologia , Distúrbios da Fala/fisiopatologia , Resultado do Tratamento , Insuficiência Velofaríngea/etiologiaRESUMO
BACKGROUND: Craniofrontonasal dysplasia is a rare, familial X-linked syndrome with coronal synostosis (brachycephaly or plagiocephaly), hypertelorbitism (frequently asymmetric), and extracranial anomalies. Details of the timing and technique of the craniofacial correction have not been well described. The largest series of patients with craniofrontonasal dysplasia treated at a single institution was used for review. METHODS: A review of patients at the University of California, Los Angeles Craniofacial Clinic with the diagnosis of craniofrontonasal dysplasia was performed (n = 21). Data included office, hospital, and operative records; photographs; lateral cephalograms; and three-dimensional computed tomographic scans. Based on surgical outcomes, a treatment algorithm was created. RESULTS: Fourteen patients were female, seven were male, and five had a family history of craniofrontonasal dysplasia (24 percent). Eight patients had unilateral coronal synostosis (plagiocephaly) and 13 had bilateral coronal synostosis (brachycephaly). Eleven patients had asymmetric hypertelorbitism and 10 had symmetric hypertelorbitism. Patients also had cleft lip-cleft palate (10 percent), ear deformities (19 percent), strabismus or esotropia (81 percent), dry frizzy hair (100 percent), syndactyly (14 percent), and nail (100 percent) or other anomalies. After fronto-orbital advancement, no patients had increased intracranial pressure problems or difficulty related to resynostosis. After hypertelorbitism correction, three patients relapsed. Because of this, correction in later patients was delayed until after eruption of permanent maxillary incisors. The mean anterior interorbital distance was reduced in patients from 184 percent to 98 percent of sex-matched controls. CONCLUSIONS: The phenotypic expression of craniofrontonasal dysplasia is described to recognize patients early. A treatment algorithm for craniofrontonasal dysplasia based on timing and technique is offered to decrease the need for revision and improve outcomes.
Assuntos
Craniossinostoses/cirurgia , Doenças Genéticas Ligadas ao Cromossomo X/cirurgia , Nariz/anormalidades , Procedimentos de Cirurgia Plástica/métodos , Anormalidades Múltiplas/genética , Anormalidades Múltiplas/cirurgia , Algoritmos , Fenda Labial/cirurgia , Fissura Palatina/cirurgia , Craniossinostoses/genética , Anormalidades do Olho/genética , Anormalidades do Olho/cirurgia , Feminino , Cabelo/anormalidades , Humanos , Hipertelorismo/cirurgia , Lactente , Deformidades Congênitas dos Membros/genética , Masculino , Unhas Malformadas/genética , Nariz/cirurgia , Estudos Retrospectivos , Resultado do TratamentoRESUMO
BACKGROUND: Current theory on normal cranial suture fusion entrusts the dura with the regulatory role. Studies suggest that the dura responds to stress with changes in gene expression. Noggin (bone morphogenetic protein inhibitor) expression is decreased in normal (rat and mouse) cranial suture fusion, but its role in craniosynostosis and the response to stress has not been studied. METHODS: Posterior frontal (fusing) and sagittal (patent) rat cranial sutures were held static, oscillated, or distracted for 10 days in an organ culture microdistraction device beginning at 5 days of age (n = 30 sutures, or 10 sutures per group). The percentage of fusion equaled the score received for bony closure. Noggin, Runx2, and alkaline phosphatase expression was localized by immunohistochemistry for all groups. RESULTS: Both the posterior frontal and sagittal sutures demonstrated a significant (p < 0.05) increase in fusion percentage with oscillation relative to the static control. Noggin was not expressed in the fusing posterior frontal suture but was expressed in the normally patent sagittal suture. Conversely, Runx2 was expressed in the posterior frontal suture but not in the sagittal suture. However, when a mechanical stress was applied, both the posterior frontal and sagittal sutures expressed Runx2 but not Noggin, as in the static fusing suture. CONCLUSIONS: The application of mechanical stress to cranial sutures results in fusion of both the posterior frontal suture and the normally patent sagittal suture. Runx2 is expressed but Noggin is not expressed. Thus, mechanical stress influences sutural fusion and may play a role in craniosynostosis.
Assuntos
Proteínas de Transporte/biossíntese , Subunidade alfa 1 de Fator de Ligação ao Core/biossíntese , Craniossinostoses/fisiopatologia , Animais , Proteínas de Transporte/genética , Subunidade alfa 1 de Fator de Ligação ao Core/genética , Suturas Cranianas , Craniossinostoses/genética , Dura-Máter/fisiologia , Expressão Gênica , Ratos , Ratos Sprague-Dawley , Estresse MecânicoRESUMO
Harvest of the autogenous iliac crest bone graft for an alveolar cleft defect (the gold standard) may cause short- and long-term pain and sensory disturbances. To determine if a tissue engineering technique with similar bone healing results offered decreased morbidity, we compared techniques for postoperative donor site pain. Traditional iliac crest bone graft had more donor site complications compared with both tissue engineering and minimally invasive iliac crest bone graft. With donor site pain, traditional had the most patients with pain and tissue engineering had the least patients with pain at all time points. The mean pain score, including both intensity and pain frequency, was greatest at all time points in traditional and least at all time points in tissue engineering. Closure of alveolar cleft defects with a resorbable collagen sponge and bone marrow stem cells resulted in reduced donor site morbidity and decreased donor site pain intensity and frequency.
Assuntos
Processo Alveolar/cirurgia , Alveoloplastia , Transplante Ósseo/métodos , Fissura Palatina/cirurgia , Dor Pós-Operatória , Transplante de Células-Tronco/métodos , Análise de Variância , Transplante Ósseo/efeitos adversos , Criança , Humanos , Ílio/transplante , Medição da Dor , Engenharia Tecidual/métodosRESUMO
BACKGROUND: Despite a perceived interest in autologous fat transfer, there is no consensus as to the best technique or the level of success. The purpose of the present study was to determine the national trends in techniques for harvest, preparation, and application of autologous fat, as well as the success perceived by practitioners. METHODS: Comprehensive surveys were sent to 650 randomly selected members of the American Society for Aesthetic Plastic Surgery. The survey was aimed at determining whether autologous fat transfer is a commonly performed procedure and, if so, the specific methods involved and the subjective perception of short- and long-term results. RESULTS: The results of the national consensus survey from 508 surgeons (78 percent return rate) showed the following: (1) autologous fat transfer is a relatively common procedure (57 percent perform >10 annually), but few perform it in high volume (only 23 percent perform >30 annually); (2) techniques for harvest, preparation, and injection rarely deviate from methods discussed in the literature (microcannula, 54 percent; centrifugation, 75 percent; injection in nasolabial fold > lips > nasojugal folds); (3) most physicians believe that at least some graft survival is clinically evident (93 percent); and (4) patients are pleased with the short-term results (good to excellent, 84 percent), despite a lower rate of long-term patient satisfaction (fair to good, 80 percent). CONCLUSION: Currently, plastic surgeons across the country report a uniformity of autologous fat grafting techniques with acceptable patient satisfaction.
Assuntos
Procedimentos de Cirurgia Plástica/métodos , Gordura Subcutânea/transplante , Coleta de Tecidos e Órgãos , Consenso , Humanos , Inquéritos e Questionários , Fatores de TempoRESUMO
INTRODUCTION: Normal suture fusion has been shown to be driven by the molecular signals elucidated by the underlying dura. However, the pathogenesis of suture fusion in craniosynostosis is not well described. The purpose of our study was to examine the expression patterns of 2 important molecular signals (Noggin and Runx-2) in a cohort of congenital craniosynostotic rabbits to gain a better understanding of suture behavior in craniosynostosis. METHODS: Coronal (fusing) and sagittal (patent) rabbit cranial sutures from a colony of congenitally synostosed rabbits and wild-type (control) rabbits were harvested at a neonatal time point. These sections were then grown in organ culture and harvested for histology at 0, 7, or 14 days of culture. Fusion percentage was then assessed and an overall fusion score was calculated. Expression of Noggin and Runx-2 was then localized by immunohistochemistry and quantified by Western blot analysis. RESULTS: Histology of the wild-type cranial sutures (control) showed suture patency (score of 0%) for all coronal and sagittal sutures at 0 days, 7 days, and 14 days of organ culture. Sagittal sutures of craniosynostotic animals also showed suture patency (score of 0%) at all culture times (0, 7, and 14 days). Of the 18 coronal sutures from the craniosynostotic animals, 8 remained patent and 10 fused. For the coronal sutures that fused, fusion scores of 14%, 41%, and 84% were documented at 0, 7, and 14 days of organ culture, respectively. With immunolocalization, Noggin was found to be expressed in both the dura and suture cells underlying patent sutures, but not in fusing sutures in vitro. Runx-2 was found to be expressed in the dura beneath the suture and suture cells of fusing sutures, not patent sutures. Western blot densitometry confirmed these findings. CONCLUSIONS: Our results suggest that pathologic rabbit coronal sutures progressed toward complete suture fusion in vitro, and expression patterns of Noggin and Runx-2 paralleled that of a well-studied normal suture fusion model.
Assuntos
Proteínas de Transporte/análise , Subunidade alfa 1 de Fator de Ligação ao Core/análise , Craniossinostoses/genética , Craniossinostoses/patologia , Animais , Animais Recém-Nascidos , Western Blotting , Suturas Cranianas/embriologia , Suturas Cranianas/fisiologia , Modelos Animais de Doenças , Regulação para Baixo , Regulação da Expressão Gênica no Desenvolvimento , Imuno-Histoquímica , Técnicas de Cultura de Órgãos , Coelhos , Sensibilidade e Especificidade , Regulação para CimaRESUMO
BACKGROUND: Widespread use of herbal medications/supplements among the presurgical population may have a negative effect on perioperative patient care. Thus, the authors' goal was to identify the prevalence of such use in a cosmetic surgery patient population compared with use among the general public; to assess physician awareness of proper management of these herbal medications/supplements; and to review the literature to provide rational strategies for managing perioperative patients taking these remedies. METHODS: To assess patient (n = 100) and general public (n = 100) usage rates, open-ended lists of (1) the most common herbal medications/supplements and (2) homeopathic treatments were compiled. Board-certified plastic surgeons (n = 20) were then given the same list of herbs/supplements and surveyed on their awareness of these treatments and perioperative side effects. RESULTS: The usage rate for cosmetic versus public surveys for herbal medicines/supplements was 55 percent versus 24 percent (p < 0.001), with 35 percent versus 8 percent (p < 0.001) engaging in homeopathic practices, respectively. Cosmetic patients' top four herbal/supplements of usage were chondroitin (18 percent), ephedra (18 percent), echinacea (14 percent), and glucosamine (10 percent). The top four used by the general public were echinacea (8 percent), garlic (6 percent), ginseng (4 percent), and ginger (4 percent). The physician survey demonstrated awareness of 54 percent of the listed supplements/herbal medicines, 85 percent of which were not suggested to be discontinued preoperatively, with only ephedra achieving 100 percent physician discontinuation preoperatively. CONCLUSIONS: Herbal medicines and supplements displayed greater prevalence in the cosmetic surgery population than in the population at large. Furthermore, side effects and potential complications warrant addressing these remedies as pharmaceuticals rather than as safe and "natural." Thus, a descriptive "top-10" list with perioperative recommendations was compiled for the plastic surgeon.