RESUMO

BACKGROUND: There is an increased tissue expression of matrix metalloproteinases (MMPs) on Dupuytren contracture (DC). Genetic polymorphisms (single nucleotide polymorphism [SNPs]) in genes of these enzymes may individually influence these transcriptions. Haplotype analysis, which is the observation of a group of alleles, could be more useful to identify the association between SNPs and DC. The purpose of this study was to evaluate the influence of MMP-1 g.-1607 G>GG (rs1799750), MMP-8 g.-799 C>T (rs11225395), and MMP-13 g.-77 A>G (rs2252070) SNPs individually and in haplotype on DC. METHODS: A total of 60 patients with a clinical diagnosis of DC were evaluated and matched, according to age and gender, with the control group of 100 patients without this clinical diagnosis. Genomic DNA was extracted from saliva samples, and genotypes were obtained by polymerase chain reaction-restriction fragment length polymorphism. Statistical analysis of the results included Mann-Whitney U test, Chi-squared test, and PHASE and R software, with a significance level of 5%. RESULTS: The 3 SNPs studied showed significant differences in allele and genotype frequencies between the groups: 2G in MMP-1 (P = .018; odds ratio [OR] 1.80 (95% confidence interval [CI], 1.13-2.88)), T in MMP-8 (P = .015; OR 0.53 (95% CI, 0.33-0.88)), and A in MMP-13 (rs2252070) SNPs (P = .040, OR 0.54 (95% CI, 0.33-0.90)) are risk alleles. The global haplotype analysis indicated a significant difference between both groups. CONCLUSIONS: In conclusion, MMP-1 g.-1607 G>GG (rs1799750), MMP-8 g.-799 C>T (rs11225395), and MMP-13 g.-77 A>G (rs2252070) SNPs, individually and in haplotype, are a risk factor for DC, indicating that these SNPs may be a potential diagnostic and prognostic factor for DC.

RESUMO

INTRODUCTION: The main innervation of the trapezius muscle is provided by the spinal accessory nerve. Several studies describe the contributions of cervical plexus roots to the trapezius muscle innervation, either directly or through connections with the spinal accessory nerve. There is no adequate understanding of how the trapezius muscle is affected after using the spinal accessory nerve in nerve transfer procedures with the usual technique, preserving at least 1 branch for the upper trapezius. METHODS: We evaluated 20 patients with sequelae of traumatic brachial plexus injury who underwent surgical procedures for brachial plexus repair or free muscle transfer, which included the spinal accessory nerve transfer technique and were followed for a minimum of 1 year. The three portions trapezius muscle were evaluated by physical examination, magnetic resonance imaging (analysis of fatty degeneration) and electromyography. RESULTS: In all evaluation methods, the middle and lower portions of the trapezius muscle showed more significant morphological and/or functional impairment than the upper portion, in most cases. There was a statistically significant difference in all the complementary exams results, between the affected side (with sacrifice of the nerve) versus the normal side, in the middle and lower portions of the trapezius muscle. CONCLUSIONS: Physical examination alone is not sufficient to determine the residual functionality of the trapezius muscle. Magnetic resonance imaging and electromyography are useful tools to assess both morphological involvement of the trapezius muscle and nerve conduction impairment of the trapezius muscle, respectively. The results suggest that the middle and lower portions of the trapezius muscle are affected by previous SAN transfer and should be considered with caution for further muscle transfer procedures.

Assuntos

RESUMO

ABSTRACT Objetive: This article presents a retrospective cohort study analyzing patients from IOT-FMUSP who underwent replantation or revision amputation procedures for traumatic thumb amputation between 2013 and 2020. Methods: The study included 40 patients in the replanted group and 41 patients in the amputed group. The patients were divided according to the level of amputation and their medical records were analyzed. Results: A total of 81 patients with digital amputation were analyzed, consisting of 79 males and 2 females, with mean ages of 43 and 49 for the amputed and replanted groups, respectively. According to the Biemer classification, 28.4% had proximal amputation, while 71.6% had distal amputation. The most common occupation was bricklayer (19.75%), and 80.24% were manual workers. Of the patients, 65% returned to their previous work, with 77.77% of them having amputation on their non-dominant hand, mostly caused by circular saw accidents (77.77%). The replantation success rate was 78%, with an average ischemia time of 9 hours and door-to-room time of 2 hours. Conclusion: the study findings revealed that traumatic thumb amputation predominantly affects working-age males with a low education level and the success rate of replantation was high in this ischemia time and door-to-room conditions. Level of Evidence II, Retrospective study.

RESUMO Objetivo: Este artigo consiste em um corte retrospectivo que analisou vítimas de amputação traumática do polegar submetidas a reimplante ou procedimentos de regularização da amputação no Instituto de Ortopedia e Traumatologia do Hospital das Clínicas da Faculdade de Medica da Universidade de São Paulo (IOT-FMUSP). Métodos: Foram analisados 40 pacientes reimplantados e 41 pacientes regularizados, que foram separados conforme o nível da amputação e, após, tiveram seus prontuários médicos analisados. Resultados: Foram analisados 81 pacientes com amputação digital (79 homens e 2 mulheres), com idade média de 43 anos e 49 anos (Grupo Amputado e Grupo Reimplante, respectivamente) e 28,4% deles tinham amputação proximal, de acordo com a classificação de Biemer, enquanto 71,6% tinham amputação distal. A ocupação mais comum foi a de pedreiro (19,75%), mas 80,24% eram trabalhadores manuais. 65% dos pacientes retornaram ao trabalho anterior. 77,77% dos pacientes afetaram a mão não dominante, e a serra circular causou 77,77% das amputações. A taxa de sucesso para reimplantes foi de 78%. O tempo de isquemia foi de 9 horas e o tempo de porta-quarto foi de 2 horas. Conclusão: O estudo revelou que as taxas de reimplante foram altas nas condições de isquemia e tempo porta-sala, e a maioria dos pacientes vítimas de amputação traumática do polegar são homens em idade de trabalho e com baixa escolaridade. Nível de Evidência II, Estudo retrospectivo.

RESUMO

Abstract Objective Advances in reconstructive microsurgery in orthopedic surgery provided better functional and aesthetic results and avoided many indications for amputation. In high-volume trauma and orthopedic hospitals, microsurgical reconstruction is essential to reduce costs and complications for these complex orthopedic defects. We describe a microsurgical approach to traumatic wounds, tumor resection, bone defects, and free muscle transfer, performed by an orthopedic microsurgery unit. The objective of the present study was to evaluate predictor factors for outcomes of microsurgical flaps for limb reconstruction, and to provide a descriptive analysis of microsurgical flaps for orthopedic indications. Methods Cross-sectional prospective study that included all consecutive cases of microsurgical flaps for orthopedic indications from 2014 to 2020. Data were collected from personal medical history, intraoperative microsurgical procedure, and laboratory blood tests. Complications and free-flap outcomes were studied in a descriptive and statistical analysis. Results We evaluated 171 flaps in 168 patients; the indications were traumatic in 66% of the patients. Type III complications of the Clavien-Dindo Classification were observed in 51 flaps. The overall success rate of the microsurgical flaps was 88.3%. In the multivariate analysis, the risk factors for complications were ischemia time ≥ 2 hours (p= 0.032) and obesity (p= 0.007). Partial flap loss was more common in patients with thrombocytosis in the preoperative platelet count (p= 0.001). Conclusion The independent risk factors for complications of microsurgical flaps for limb reconstruction are obesity and flap ischemia time ≥ 2 hours, and presence of thrombocytosis is a risk factor for partial flap loss.

Resumo Objetivo Os avanços da microcirurgia reconstrutiva na cirurgia ortopédica proporcionaram melhores resultados funcionais e estéticos, evitando as muitas indicações de amputação. Nos hospitais de ortopedia e traumatologia com um grande volume de atendimento, a reconstrução microcirúrgica é essencial, a fim de reduzir os custos e as complicações destes complexos defeitos ortopédicos. Descrevemos uma abordagem microcirúrgica para feridas traumáticas, ressecção tumoral, defeitos ósseos e transferência muscular livre realizada por uma unidade ortopédica especializada em microcirurgia. O objetivo do presente estudo é avaliar os fatores preditivos de resultados dos retalhos microcirúrgicos na reconstrução dos membros, fornecendo uma análise descritiva dos retalhos microcirúrgicos para as indicações ortopédicas. Métodos Estudo prospectivo transversal, que incluiu todos os casos consecutivos de retalhos microcirúrgicos com indicação ortopédica de 2014 a 2020. Foram coletados os dados do histórico clínico pessoal, procedimentos microcirúrgicos intraoperatórios e exames laboratoriais. As complicações e os desfechos de retalho livre foram estudados mediante uma análise descritiva e estatística. Resultados Avaliamos 171 retalhos em 168 pacientes. A indicação mais frequente para a realização de um retalho microcirúrgico foi a traumática, em 66% dos pacientes. Foram observadas complicações cirúrgicas em 51 retalhos, conforme a classificação de Clavien-Dindo do tipo III. A taxa de êxito global dos retalhos microcirúrgicos foi de 88,3%. Na análise multivariada, foram identificados como fatores de risco para complicações tempo de isquemia ≥ 2 horas (p= 0,032) e obesidade (p= 0,007). A perda parcial do retalho foi mais comum em pacientes com trombocitose, com contagem de plaquetas pré-operatória (p= 0,001). Conclusão Os fatores de risco independentes para complicações de retalhos microcirúrgicos para a reconstrução de membro são obesidade e tempo de isquemia do retalho ≥ 2 horas, e a presença de trombocitose como fator de risco para perda parcial do retalho.

Assuntos

RESUMO

ABSTRACT Objective: To evaluate histological changes in peripheral nerves of rats after sciatic nerve neurorrhaphy, according to the time of exposure to hyperbaric oxygen chamber treatment. Methods: Twenty-five Wistar rats were divided into 5 groups according to the amount of exposure to hyperbaric oxygen chamber treatment. Group 1 was the control and there was no use of hyperbaric oxygen chamber; group 2 received one week of therapy; group 3, two weeks; group 4, three weeks; and group 5, four weeks. After the fourth postoperative week, the animals were submitted to euthanasia and a sciatic nerve sample sent for histological analysis. Axons proximal and distal to the neurorrhaphy were counted with axonal regeneration index measurement. Results: We observed that the number of axons distal to neurorrhaphy increases with the amount of hyperbaric oxygen chamber exposure, the results were more expressive from the third week of treatment. However, the statistical analysis found no significant difference between the groups. Conclusion: The descriptive analysis suggests benefit of using hyperbaric oxygen chamber directly proportional to the time of therapy. The study, however, did not present statistically relevant results, probably due to the reduced sample size. Subsequent studies with more significant sampling would be of great value. Level of Evidence II, Prospective Comparative Study.

RESUMO Objetivo: Avaliar as alterações histológicas nos nervos periféricos após neurorrafia do nervo ciático de ratos, de acordo com o tempo de exposição ao tratamento com câmara hiperbárica de oxigênio. Métodos: Vinte e cinco ratos da raça Wistar foram divididos em cinco grupos conforme o tempo de exposição ao tratamento com câmara hiperbárica de oxigênio. O grupo 1 não recebeu o tratamento; o grupo 2 recebeu uma semana de terapia; o grupo 3, duas semanas; o grupo 4, três semanas; e o grupo 5, quatro semanas. Após quatro semanas de pós-operatório, os animais foram submetidos à eutanásia e uma amostra do nervo ciático foi enviada para análise histológica. Foram feitas contagens do número de axônios proximalmente e distalmente à neurorrafia, com medição do índice de regeneração axonal. Resultados: Observamos que o aumento do número de axônios distais à neurorrafia foi diretamente proporcional ao tempo de exposição à câmara hiperbárica de oxigênio, sendo mais expressivo a partir da terceira semana de tratamento. Entretanto, a análise estatística não encontrou diferença significativa entre os grupos. Conclusão: A análise descritiva sugere benefício do uso da câmara hiperbárica de oxigênio. Porém, devido à amostra reduzida, o estudo não apresentou resultados estatisticamente relevantes, sendo necessária a realização de estudos subsequentes com amostragem mais significativa. Nível de Evidência II, Estudo Prospectivo Comparativo.

RESUMO

ABSTRACT Objectives: The purpose of this study is to describe associated factors and epidemiological aspects of Dupuytren's Disease in patients followed up in a Brazilian tertiary public hospital, at the Hand Surgery service. Methods: A cross-sectional study was performed from 2014 to 2019. Data collected included: age, gender, ancestry, associated comorbidity presence, phenobarbital, tobacco, and alcohol use, family history of Dupuytren's Disease and associated fibrotic diseases. Then, the patients underwent a clinical examination to identify and characterize the involvement of the fingers. The patients were also assessed in regard to whether they presented Dupuytren's Disease severity factors. Results: 140 patients were included, 70.7% men and 29.3% women. Only 42.3% reported being of European ancestry; 20% had first-degree relatives with the disease; 59.3% presented comorbidities, including hypertension, diabetes, chronic heart disease, dyslipidemia, epilepsy, and HIV infection; 15.8% had Ledderhose disease, 7.1% had Peyronie's disease. 31% were smokers, 16.6% were alcoholic, and 37.1% were phenobarbital users; 40% presented with a severe form of DD. Conclusion: The population studied was composed of Brazilians, most of whom did not report European ancestry; still, they presented several characteristics similar to those described in literature worldwide. Level of Evidence II; Prognostic Studies; Investigating the effect of a patient characteristic on the outcome of a disease .

RESUMO Obejtivo: Descrever fatores associados e aspectos epidemiológicos da Doença de Dupuytren em uma população de pacientes acompanhados em serviço de Cirurgia de Mão de hospital público terciário brasileiro. Métodos: Realizou-se um estudo transversal entre os anos de 2014 e 2019. Coletamos dados como idade, gênero, ascendência, comorbidades associadas, doenças fibróticas associadas, uso de fenobarbital, uso de tabaco e álcool e histórico familiar de Doença de Dupuytren. Em seguida, realizamos exame clínico, caracterizando o acometimento dos dedos da mão. Também foi avaliado se os pacientes da amostra apresentavam fatores de gravidade da Doença de Dupuytren. Resultados: 140 pacientes foram incluídos, 70,7% eram homens e 29,3% mulheres. Apenas 42,3% dos pacientes relataram ascendência europeia; 20% apresentaram parentes de primeiro grau com a doença; 59,3% apresentaram comorbidades, incluindo hipertensão, diabetes, cardiopatia crônica, dislipidemia e infecção por HIV; 15,8% tinham doença de Ledderhose e 7,1% tinham doença de Peyronie. 31% eram fumantes, 16,6% declararam alcoolismo, 37,1% faziam uso de fenobarbital e 40% apresentaram a forma grave da DD. Conclusão: A população estudada foi composta por brasileiros que apesar de, em sua maioria, não relatarem ascendência europeia, apresentaram diversas características semelhantes às descritas na literatura mundial. Nível de Evidência II; Estudos Prognósticos; Investigação do efeito de característica de um paciente sobre o desfecho da doença.

RESUMO

OBJECTIVES: This study proposed a structured microsurgical training program and evaluated it with the assistance of a large sample of surgeons. METHODS: The practical course comprised 16 sessions of approximately 4 hours each. This included two sessions for suturing rubber gloves and two sessions for suturing arteries, veins, and nerves in chicken thighs. The other sessions were performed on the femoral vessels of rats: 5 sessions for end-to-end arterial anastomosis, 5 for end-to-end venous anastomosis, 1 for arterial grafting, and 1 for end-to-side anastomosis. We conducted a structured assessment of the microsurgical skills in each training session. RESULTS: In this study, 89 surgeons were evaluated. The mean scores for the different procedures were as follows: glove suturing, 33.3±0.59; chicken nerve end-to-end anastomosis, 40.3±0.49; chicken artery suturing, 40.9±0.36; chicken vein suturing, 42.3±0.36; graft interposition, 44.8±0.7; and end-to-side anastomosis, 43.7±0.63 (p<0.05 for all). The chicken thigh suturing scores were significantly higher than the rubber gloves suturing scores (p<0.01). There were no differences between scores of the rat artery and chicken thigh suturing procedures (p=0.24). The rat venous anastomosis scores were higher than the rat arterial anastomosis scores (p=0.02), as were graft interposition scores when compared with end-to-end venous anastomosis scores. The end-to-side anastomosis scores did not differ significantly from the grafting scores (p=0.85). The most common errors were inadequate knotting technique and suture rupture due to inadequate technique (both n=88 [98.9%]). CONCLUSION: We propose a 16-step, progressive microsurgical training program to learn the basic microsurgical techniques comprehensively and reliably. The program was evaluated in a large sample of trainees, and it demonstrated the adequacy of the training sequence and results.

Assuntos

RESUMO

OBJECTIVES: This study proposed a structured microsurgical training program and evaluated it with the assistance of a large sample of surgeons. METHODS: The practical course comprised 16 sessions of approximately 4 hours each. This included two sessions for suturing rubber gloves and two sessions for suturing arteries, veins, and nerves in chicken thighs. The other sessions were performed on the femoral vessels of rats: 5 sessions for end-to-end arterial anastomosis, 5 for end-to-end venous anastomosis, 1 for arterial grafting, and 1 for end-to-side anastomosis. We conducted a structured assessment of the microsurgical skills in each training session. RESULTS: In this study, 89 surgeons were evaluated. The mean scores for the different procedures were as follows: glove suturing, 33.3±0.59; chicken nerve end-to-end anastomosis, 40.3±0.49; chicken artery suturing, 40.9±0.36; chicken vein suturing, 42.3±0.36; graft interposition, 44.8±0.7; and end-to-side anastomosis, 43.7±0.63 (p<0.05 for all). The chicken thigh suturing scores were significantly higher than the rubber gloves suturing scores (p<0.01). There were no differences between scores of the rat artery and chicken thigh suturing procedures (p=0.24). The rat venous anastomosis scores were higher than the rat arterial anastomosis scores (p=0.02), as were graft interposition scores when compared with end-to-end venous anastomosis scores. The end-to-side anastomosis scores did not differ significantly from the grafting scores (p=0.85). The most common errors were inadequate knotting technique and suture rupture due to inadequate technique (both n=88 [98.9%]). CONCLUSION: We propose a 16-step, progressive microsurgical training program to learn the basic microsurgical techniques comprehensively and reliably. The program was evaluated in a large sample of trainees, and it demonstrated the adequacy of the training sequence and results.

Assuntos

RESUMO

Abstract Arthroscopy is a surgical technique whose indication for wrist injuries has grown in recent years. Athletes are subject to traumatic injury to the wrist due to training overload or the intensity of the activity during competition. The need of a quick return to sports practice makes arthroscopy a very useful minimally invasive technique in these situations. The authors present indications of sports-related injuries to the wrist that can be treated by arthroscopy. A literature review is also presented.

Resumo A artroscopia é uma técnica cirúrgica que tem sido cada vez mais usada para a abordagem de lesões no punho. Atletas estão sujeitos a lesões traumáticas no punho devido à sobrecarga de treinamento ou à intensidade da atividade em competição. A necessidade de retornar o mais breve possível à pratica esportiva faz da artroscopia uma técnica minimamente invasiva muito útil nessas situações. Os autores apresentam as principais indicações de tratamento de lesões esportivas por artroscopia. Foi feita uma revisão da literatura.

Assuntos

RESUMO

ABSTRACT Objective The medial femoral condyle corticoperiosteal flap is irrigated by the descending genicular artery, and when this is absent, by the superior medial genicular artery. The descending genicular artery divides into the muscular, saphenous, and osteoarticular branches. The objective of this study was to describe the variables involved in the dissection of the medial femoral condyle flap. Methods Thirty thighs from 20 cadavers were dissected and the following variables were recorded: age, height, weight, thigh length, presence of the descending genicular artery, whether the saphenous branch originated from the descending genicular artery, the length of the branches originating from the descending genicular artery, and the diameter of the descending genicular artery and the vena comitans. Results The descending genicular artery was present in 93.3% of the specimens (28/30). The saphenous branch originated from this artery in 76.7% of the dissections (23/70). The mean distance between the origin of the descending genicular artery and the knee joint was 13.4 cm (±١.4), the mean length of the descending genicular artery was 7.5 cm (±1.5), the mean diameter of the descending genicular artery was 1.9 mm (±٠.3), and the mean diameter of the vena comitans was 1.7 mm (±٠.3). Conclusion The vascularized medial femoral condyle is a versatile option for reconstruction of musculoskeletal injuries. It allows transference of bone associated with muscle and skin, which are each nourished by independent branches. Level of Evidence IV; Case series.

RESUMO Objetivo O retalho ósseo vascularizado do côndilo femoral medial deve sua irrigação à artéria genicular descendente e, na ausência desta, à artéria genicular superior medial. A artéria genicular descendente comumente ramifica-se em: ramo muscular, safeno e osteoarticular. O estudo teve por objetivo analisar as variáveis relativas à dissecção do retalho ósseo do côndilo femoral medial. Métodos Foram dissecados 30 joelhos (20 cadáveres), registrando-se: idade; estatura; peso; comprimento da coxa; presença da artéria genicular descendente; se o ramo safeno tem origem na artéria genicular descendente; comprimento dos ramos da artéria genicular descendente e os diâmetros da artéria genicular descendente e veia comitante. Resultados A artéria genicular descendente esteve presente em 93,3% dos espécimes (28/30). O ramo safeno originou-se da artéria genicular descendente em 76,7% das dissecções (23/70). Distância entre origem da artéria genicular descendente e interlinha articular = 13,4 (±1,4) cm, comprimento da artéria genicular descendente = 7,5 (±1,5) cm, diâmetro da artéria genicular descendente = 1,9 (±0,3) mm, diâmetro da veia comitante = 1,7 (±0,3) mm. Conclusão O retalho ósseo vascularizado do côndilo femoral medial mostrou-se a opção versátil para reconstrução de lesões do sistema músculo-esquelético. Permite a elevação de retalho ósseo associado à pele e tecido muscular, cada qual nutrido por ramos independentes. Nível de Evidência IV; Série de casos.