Evaluation of different commercial hyaluronic acids as a vehicle for injection of human adipose-derived mesenchymal stem cells
ConclusionThese data suggest that hyaluronic acid can be used as a vehicle for injection of human AD-MSCs, but caution is needed to choose the best product, aiming at its future therapeutic application.ResumoObjetivoAvaliar in vitro, de forma direta, a citotoxicidade de ácidos hialurônicos como veículo de injeção para linhagens de células-tronco mesenquimais (CTMs) obtidas de tecido adiposo humano.MétodosAs CTMs foram divididas em sete grupos, os quais foram expostos ao ácido hialurônico de seis marcas comerciais, além do contato com tampão fosfato-salino PBS (grupo controle). Após quatro, 24 e 48 horas, foi fe...
Source: Revista Brasileira de Ortopedia - August 2, 2018 Category: Orthopaedics Source Type: research
Biomechanical analysis of a double fixation method for tendon graft in porcine tibia – using an interference screw plus staple
ConclusionThe addition of a second staple-type ligament fixation device, complementing the interference screw, did not increase the mechanical safety of the system.ResumoObjetivoComparar o comportamento mecânico da fixação tibial com parafuso de interferência versus parafuso de interferência com agrafe, em modelo animal.MétodosForam selecionadas 36 peças de joelho suíno e divididas em dois grupos: Grupo 1, fixação tibial com parafuso de interferência (n = 17) e Grupo 2, fixação com parafuso de interferência e agrafe (n = 19). Os modelos foram submetidos a teste de ciclo único de tração. Foram mensuradas as...
Source: Revista Brasileira de Ortopedia - July 28, 2018 Category: Orthopaedics Source Type: research
Allograft of the knee extensor in cases of patellar tendon rupture in total arthroplasty patients
ConclusionThe use of allograft is a solution for extreme cases of patellar rupture after total knee arthroplasty, providing reasonable functional results and representing an alternative to knee arthrodesis.ResumoObjetivoEstudo retrospectivo para avaliação dos resultados funcionais de pacientes com artroplastia total do joelho e rotura do tendão patelar submetidos a transplante total de aparelho extensor do joelho congelado.MétodoNove pacientes, operados entre 2003 e 2015, com um mínimo de um ano de seguimento. Procedeu-se a uma avaliação funcional com o escore da Knee Society, compararam-se os valores no pré-operat...
Source: Revista Brasileira de Ortopedia - July 28, 2018 Category: Orthopaedics Source Type: research
Biometric, histomorphometric, and biochemical profile in atorvastatin calcium treatment of female rats with dexamethasone-induced osteoporosis
ConclusionTreatment with atorvastatin calcium demonstrated the ability of this drug to increase osteoblastic activity and bone tissue repair activity, acting differently from alendronate sodium, which demonstrated predominantly antirebsorptive activity.ResumoObjetivoAvaliar os efeitos da atorvastatina cálcica no tratamento da osteoporose induzida com dexametasona.MétodosA indução da osteoporose consistiu na administração de dexametasona na dose de 7,5 mg/kg de peso corporal, por via intramuscular, uma vez por semana durante quatro semanas, à exceção dos animais do grupo controle (G1). Os animais foram distrib...
Source: Revista Brasileira de Ortopedia - July 28, 2018 Category: Orthopaedics Source Type: research
Use of oral anticoagulants for the prevention of thromboembolic events in the post-operative period of hip arthroplasty: a systematic review
Publication date: Available online 27 July 2018Source: Revista Brasileira de Ortopedia (English Edition)Author(s): Anderson Reus Trevisol, Eduardo Felipe Mandarino Coppi, Julia Pancotte, Emanuelly Casal Bortoluzzi, Gabriel Pozzobon KnopAbstractOral anticoagulants are being used in the postoperative period of hip arthroplasty to prevent of thromboembolic events, create doubts as to the effectiveness of thromboprophylaxis and reduce the risk of hemorrhage. This systematic revision is aimed at evaluating the use of oral anticoagulants in the prevention of thromboembolic events in the postoperative period of patients undergoin...
Source: Revista Brasileira de Ortopedia - July 28, 2018 Category: Orthopaedics Source Type: research
Comparison of the effects of volemic reposition with 7.5% NaCl or blood in an experimental model of muscular compression and hemorrhagic shock
ConclusionsThe proposed model was effective for the study of crush syndrome associated with hemorrhagic shock. The treatment with hypertonic solution showed benefits when compared with blood volume replacement.ResumoObjetivoA síndrome de esmagamento é caracterizada por lesões musculares traumáticas com graves repercussões clínicas sistêmicas. A reação inflamatória sistêmica, caracterizada agudamente por infiltração de neutrófilos nos pulmões, tem sido estudada como parte do espectro da síndrome de esmagamento. A pesquisa experimental pode demonstrar opções de tratamento para a síndrome de esmagamento. Os...
Source: Revista Brasileira de Ortopedia - July 28, 2018 Category: Orthopaedics Source Type: research
Arthroscopic treatment of synovial chondromatosis of the ankle
This report describes a case of synovial chondromatosis of the ankle, treated by arthroscopy. The patient, a 59 year-old male, complained of pain and swelling of the left ankle. Physical evaluation showed limited tibiotarsal mobility (plantar flexion of 20° and dorsiflexion of 5°). After physical and imaging evaluation, the patient underwent ankle arthroscopy due to impingement of the joint, with limitation of mobility. Arthroscopic treatment allowed easy access to the joint, removal of loose bodies, and partial synovectomy, with low morbidity and early rehabilitation. The final prognosis was excellent.ResumoA condromato...
Source: Revista Brasileira de Ortopedia - July 28, 2018 Category: Orthopaedics Source Type: research
Total hip revision arthroplasty of high-risk pelvic vascular injury associated with an endovascular approach: a case report
Publication date: Available online 27 July 2018Source: Revista Brasileira de Ortopedia (English Edition)Author(s): Rafael Leite de Pinho Tavares, Elias Arcenio Neto, Walter TakiAbstractVascular injury during a revision total hip revision arthroplasty surgery is an uncommon event; nonetheless, it is recognized as an intraoperative complication. Preoperative planning becomes imperative in such cases, especially when there is a conflict between the implanted material and the iliac vessels. Usually an ilioinguinal approach is used to identify the vascular structures at risk and isolate them from the prosthetic components, whic...
Source: Revista Brasileira de Ortopedia - July 28, 2018 Category: Orthopaedics Source Type: research
A rare case of bilateral central subluxation of the hip joint with associated bilateral quadrilateral plate fracture in an elderly male due to seizure activity
In conclusion, this case is an example of rare bilateral quadrilateral plate fracture caused due to seizure activity, a fracture for which a high level of suspicion should be kept in mind while evaluating the patient post-seizure episode.ResumoLesões musculoesqueléticas, tais como luxação das articulações do ombro e quadril e fraturas do colo do fêmur, são complicações conhecidas de convulsões. A subluxação central bilateral da articulação do quadril associada a fratura bilateral da alâmina quadrilátera do acetábulo é uma entidade rara e propensa ao diagnóstico tardio, ainda mais em pacientes que experi...
Source: Revista Brasileira de Ortopedia - July 10, 2018 Category: Orthopaedics Source Type: research
Traumatic dissociation of the tibial insert with patellar tendon rupture after high-flex posterior-stabilized Genesis II total knee arthroplasty
Publication date: Available online 10 May 2017Source: Revista Brasileira de Ortopedia (English Edition)Author(s): Sanjay Agarwala, Mayank VijayvargiyaAbstractThe authors report the first case of traumatic late dissociation of the polyethylene insert with patellar tendon rupture after total knee arthroplasty using a high-flex posterior-stabilized Genesis II prosthesis in a 60-year-old Parkinson's disease patient. Insert dislodgement has been described most commonly with mobile-bearing and cruciate-retaining TKAs. Only four cases of insert dissociation in a high-flex fixed-bearing prosthesis have been described to date. This...
Source: Revista Brasileira de Ortopedia - July 10, 2018 Category: Orthopaedics Source Type: research
Bilateral symmetrical synovial chondromatosis of shoulder: a case report
This report describes a case of a 39-year-old woman who presented with symmetrical, progressively increasing swelling over the bilateral shoulder region, of 12–18 months duration, with dull ache and restricted movements of the shoulder joints. Magnetic resonance imaging (MRI) and ultrasonography (USG) revealed large bilateral subacromial-subdeltoid bursal swelling with loose floating bodies. Surgical excision of extensive bilateral bursa was performed at four weeks of interval. Histopathological examination revealed synovial chondromatosis on either side. Postoperative recovery occurred without complications.ResumoA cond...
Source: Revista Brasileira de Ortopedia - July 10, 2018 Category: Orthopaedics Source Type: research
Trans-scaphoid perilunate fracture dislocation beyond Mayfield stage IV: a case report on a new classification proposal
This report and review of the literature aims to recognize the complete enucleation beyond stage IV of the classification proposed by Mayfield. The addition of a fifth category is proposed, added for complete ligament injuries that lead to nonexistent circulation for the radiolunate ligament, preventing surgical reconstruction, thus influencing surgical treatment.ResumoEsse relato e revisão na literatura tem como objetivo reconhecer a enucleação total além do estágio IV da classificação proposta por Mayfield. Propõe-se a adição de uma quinta categoria, para lesões ligamentares completas que levam a uma circulaç...
Source: Revista Brasileira de Ortopedia - July 10, 2018 Category: Orthopaedics Source Type: research
Treatment of stable intertrochanteric fractures of the femur with proximal femoral nail versus dynamic hip screw: a comparative study
ConclusionProximal femoral nail provides a significantly shorter surgery with a smaller incision that leads to less wound-related complications. However, the incidence of technical errors was significantly higher in proximal femoral nail when compared with dynamic hip screw as it is a technically more demanding surgery that leads to more implant failures and the consequent re-operations.ResumoObjetivoAvaliar e comparar os resultados clínicos e radiológicos de pacientes com fraturas intertrocantéricas estáveis tratados com hastes femorais proximais vs. parafuso dinâmico de quadril.MétodosSessenta pacientes com fratura...
Source: Revista Brasileira de Ortopedia - July 10, 2018 Category: Orthopaedics Source Type: research
Simultaneous bilateral knee varus stress radiographic technique
This study aimed to describe, in detail, the authors’ preferred method to assess the lateral compartment opening in both knees simultaneously, which also avoids the need for the examiner to be present in the imaging room.ResumoAs radiografias de estresse em varo são descritas como uma técnica efetiva e econômica de diagnóstico e tomada de decisão em lesões laterais do joelho, tanto no contexto agudo como crônico. A abertura do compartimento lateral varia de acordo com o número de estruturas danificadas, ajudando a diferenciar lesões isoladas do ligamento colateral fibular das lesões do canto posterolateral de g...
Source: Revista Brasileira de Ortopedia - July 10, 2018 Category: Orthopaedics Source Type: research
Limb length discrepancy on an 11-month-old boy with osteoid osteoma
This article describes the case of an 11-month-old boy with claudication, right lower limb shortening, and painless right leg volume increase. Image studies demonstrated an osteolytic lesion with small ossifications within, involved by right tibial diaphysis cortical thickening. The diagnostic hypotheses were osteoid osteoma, chronic osteomyelitis (Brodie's abscess), Ewing sarcoma, and Langerhans cell histiocytosis. Microorganism cultures were negative and the histopathological exam demonstrated osteoid osteoma. This report expands the knowledge on osteoid osteoma as a cause of painless limping and lower limb shortening in...
Source: Revista Brasileira de Ortopedia - July 10, 2018 Category: Orthopaedics Source Type: research
