Lyon University Hospital Center
Lyon University Hospital Center
Abdel M.P.,Mayo Medical School |
Oussedik S.,University College London |
Parratte S.,Aix - Marseille University |
Lustig S.,Lyon University Hospital Center |
Haddad F.S.,22 Buckingham Street
Bone and Joint Journal | Year: 2014
Substantial healthcare resources have been devoted to computer navigation and patientspecific instrumentation systems that improve the reproducibility with which neutral mechanical alignment can be achieved following total knee replacement (TKR). This choice of alignment is based on the long-held tenet that the alignment of the limb post-operatively should be within 3° of a neutral mechanical axis. Several recent studies have demonstrated no significant difference in survivorship when comparing well aligned versus malaligned TKRs. Our aim was to review the anatomical alignment of the knee, the historical and contemporary data on a neutral mechanical axis in TKR, and the feasibility of kinematicallyaligned TKRs. Review of the literature suggests that a neutral mechanical axis remains the optimal guide to alignment. © 2014 The British Editorial Society of Bone & Joint Surgery.
Mick G.,Lyon University Hospital Center |
Mick G.,General Hospital |
Correa-Illanes G.,Hospital Del Trabajador |
Correa-Illanes G.,University of Chile
Current Medical Research and Opinion | Year: 2012
Background: The topical 5 lidocaine medicated plaster is recommended as first-line treatment for localized peripheral neuropathic pain. Scope: In order to provide an overview of the efficacy and safety of the lidocaine plaster in the treatment of different neuropathic pain conditions, all efficacy and safety studies (randomized, controlled, or open-label with well described methodology), case reports, and pharmacological studies on the lidocaine plaster retrieved from a PubMed literature research (1960-March 2012) plus additional references identified from retrieved articles were included. Findings: The lidocaine plaster is efficacious in the treatment of neuropathic pain symptoms associated with previous herpes zoster infection. Results from a large open-label controlled study suggest that the lidocaine plaster could be at least as effective as systemic pregabalin in the treatment of postherpetic neuralgia and painful diabetic polyneuropathy. Open-label studies indicate efficacy in the treatment of other localized neuropathic pain conditions, such as painful idiopathic sensory polyneuropathy, complex regional pain syndrome, carpal tunnel syndrome sequelae, postsurgical and posttraumatic pain. Quality of life markedly improved in a variety of neuropathic pain conditions and long-term treatment provided sustained relief in patients with neuropathic pain who are responsive to lidocaine plaster. The lidocaine plaster is usually well tolerated. The risk of systemic adverse events and pharmacokinetic interactions with concomitant medication is minimal owing to low systemic exposure. Conclusions: Treatment of several, primarily neuropathic and mixed-pain conditions with the 5 lidocaine medicated plaster was found efficacious and safe. Further controlled studies, in particular where only small open-label studies or case reports are available, should be considered. © 2012 Informa UK Ltd. All rights reserved.
Mick G.,Lyon University Hospital Center |
Hans G.,University of Antwerp
Journal of Clinical Gerontology and Geriatrics | Year: 2013
Herpes zoster (HZ; shingles) is a viral disease characterized by a painful unilateral rash involving one or two adjacent dermatomes. HZ results from reactivation of the varicella zoster virus (VZV) acquired during chickenpox. Following this primary VZV infection, the virus establishes latency in sensory nerve ganglia, until it reactivates decades later. The rash usually heals within 2-4 weeks, but some individuals experience residual neuropathic pain, known as postherpetic neuralgia (PHN), for months or even years, which can seriously impact their quality of life. We reviewed the epidemiological data for PHN in Europe since 2000 after the introduction of antiviral drugs. The overall lifetime risk for HZ was 23-30% and increased to 50% in those >80 years old. Defining PHN as pain persisting 3 months after rash onset, between 10% and 30% of patients with HZ developed PHN; this increased to 60-70% in those age ≥60 years. Some trials have reported that antiviral agents given soon after rash onset may prevent PHN. Vaccination programs with a zoster vaccine have been shown to prevent PHN, particularly in older patients. The various definitions used for PHN in different studies make it difficult to acquire a meaningful measurement of the true burden of PHN. In addition, comparisons between various studies and the prevalence and incidence data from different countries are difficult, because of this heterogeneity. This article provides a balanced overview of the important clinical and epidemiological studies carried out with respect to the definition, prevention, and treatment of this debilitating condition. Copyright © 2013, Asia Pacific League of Clinical Gerontology & Geriatrics. Published by Elsevier Taiwan LLC. All rights reserved.
Cordier J.-F.,Lyon University Hospital Center |
Cottin V.,Lyon University Hospital Center
Seminars in Respiratory and Critical Care Medicine | Year: 2011
Diffuse alveolar hemorrhage (DAH) in primary and secondary vasculitis occurs when capillaritis is present. The diagnosis of DAH is considered in patients who develop progressive dyspnea with alveolar opacities on chest imaging (with density ranging from ground glass to consolidation) that cannot be explained otherwise. Hemoptysis, a valuable sign, is often absent. A decline of blood hemoglobin level over a few days without hemolysis or any hemorrhage elsewhere should be an alert for DAH. Bronchoalveolar lavage, retrieving bright red fluid, is the best diagnostic clue. Lung biopsy is not recommended. A search for anti-neutrophil cytoplasmic autoantibodies (ANCAs) is mandatory. Once DAH is diagnosed and hemodynamic as well as infectious causes have been excluded, ANCA-associated vasculitis is taken into account (mainly microscopic polyangiitis or Wegener granulomatosis, and, exceptionally, Churg-Strauss syndrome). Drug-induced DAH, especially antithyroid drugs such as propylthiouracil may be coupled with ANCA. Isolated DAH with capillaritis with or without ANCA is rare. DAH in systemic lupus erythematosus is either associated or not with capillaritis. Treatment of DAH should target the underlying disorder. In the primary vasculitides, corticosteroids and immunosuppressants, especially cyclophosphamide, are the mainstay of therapy, but plasma exchange, particularly in severe DAH, is the rule, although evidence of its effectiveness is awaited. © 2011 by Thieme Medical Publishers, Inc.
Michallet M.,Lyon University Hospital Center
Journal of medical economics | Year: 2011
Acute myeloblastic leukaemia (AML) patients are at high risk of suffering from invasive fungal infections (IFI). Posaconazole demonstrated higher efficacy than standard azole agents (SAA) in the prophylaxis of IFI in this population. The authors estimated the cost effectiveness of posaconazole versus SAA in France. A decision-tree model was developed to compare posaconazole with SAA with the results of a published clinical trial. Clinical events were modelled with chance nodes reflecting probabilities of IFI, IFI-related death, and death from other causes. Medical resource consumption and costs were obtained from results of the clinical trial and from a dedicated survey on the costs of treating IFI using a retrospective chart review design. IFI treatment costs were estimated using medical files from 50 AML patients from six French centres, with a proven and probable IFI, who had been followed-up for 298 days on average. Direct costs directly related to IFI were estimated at €51,033, including extra costs of index hospitalisation, costs of antifungal therapy and additional hospitalisations related to IFI treatment. The model indicated that the healthcare costs for the posaconazole strategy were €5,223 (€2,697 for prophylaxis and €2,526 for IFI management), which was €859 less than the €6,083 in costs with SAA (€469 for prophylaxis and €5614 for IFI management). A sensitivity analysis indicated that there was an 80% probability that prophylaxis using the posaconazole strategy would be superior. The findings from this analysis suggest that posaconazole use is a clinically and economically dominant strategy in the prophylaxis of IFI in AML patients, given the usual limits of economic models and the uncertainty of costs estimates.
Revol O.,Lyon University Hospital Center |
Milliez N.,Lyon University Hospital Center |
Gerard D.,Lyon University Hospital Center
British Journal of Dermatology | Year: 2015
Summary The psychological consequences of acne have been the subject of many studies. As a particularly visible skin disorder, acne complicates the daily lives of adolescents who are undergoing multiple transformations: physical, intellectual and emotional. While it is well established that acne can be responsible for depression and low self-esteem, it is likely that this impact is aggravated by the sociological evolution of adolescents in the 21st century. Understanding the codes of adolescents today (who can be characterized as being more concerned by their appearance than previous generations at the same age) allows us to optimize our medical approach to acne and facilitates treatment compliance and adherence. © 2015 British Association of Dermatologists.
Lustig S.,Lyon University Hospital Center
Orthopaedics and Traumatology: Surgery and Research | Year: 2014
Patellofemoral arthroplasty remains controversial, primarily due to the high failure rates reported with early implants. Several case series have been published over the years, which describe the results with various first- and second-generation implants. The purpose of this work was to summarize results published up to now and identify common themes for implants, surgical techniques, and indications. First-generation resurfacing implants had relatively high failure rates in the medium term. Second-generation implants, with femoral cuts based on TKA designs, have yielded more promising medium-term results. The surgical indications are quite specific and must be chosen carefully to minimize poor results. Short-term complications are generally related to patellar maltracking, while long-term complications are generally related to progression of osteoarthritis in the tibiofemoral joint. Implant loosening and polyethylene wear are rare. Overall, recent improvements in implant design and surgical techniques have resulted in better short- and medium-term results. But more work is required to assess the long-term outcomes of modern implant designs. © 2013 Elsevier Masson SAS.
Des Portes V.,Lyon University Hospital Center
Handbook of Clinical Neurology | Year: 2013
Ten percent of cases of intellectual deficiency in boys are caused by genes located on the X chromosome. X-linked mental retardation (XLMR) includes more than 200 syndromes and 80 genes identified to date. The fragile X syndrome is the most frequent syndrome, due to a dynamic mutation with a CGG triplet amplification. Mental retardation is virtually always present. Phonological and syntactic impairments are often combined with pragmatic language impairment and visuospatial reasoning difficulties. A minority fulfill the criteria for autism. In girls, the clinical expression of the complete mutation varies according to the X chromosome inactivation profile. Several XLMR occur as severe early onset encephalopathies: Lowe oculocerebrorenal syndrome, ATR-X syndrome (alpha thalassemia/mental retardation X-linked), Allan-Herdon-Dudley syndrome (MCT8 gene). Two genes, ARX (X-LAG; Partington syndrome) and MECP2 (Rett syndrome in females; mild MR with spastic diplegia/psychotic problems in males) are associated with various phenotypes, according to the mutation involved. Oligophrenine 1 (OPHN-1) gene mutations lead to vermal dysplasia. PQBP1 gene mutations (Renpenning syndrome) are responsible for moderate to severe mental deficiency, microcephaly, and small stature. Although some forms of XLMR are not very specific and the phenotype for each given gene is somewhat heterogeneous, a clinical diagnostic strategy is emerging. © 2013 Elsevier B.V.
Uzzan M.,Lyon University Hospital Center
Annals of Surgery | Year: 2016
OBJECTIVES:: To determine the cumulative incidence and the prognostic factors of ileorectal anastomosis (IRA) failure after colectomy for ulcerative colitis (UC). BACKGROUND:: Although ileal pouch-anal anastomosis is recommended after colectomy for UC, IRA is still performed. METHODS:: This was a multicenter retrospective cohort study, which included patients with IRA for UC performed between 1960 and 2014. IRA failure was defined as secondary proctectomy and/or rectal cancer occurrence. Uni- and multivariate survival analyses were performed using Cox-proportional hazards models. RESULTS:: A total of 343 patients from 13 French centers were included. Median follow up after IRA was 10.6 years. IRA failure rates were estimated at 27.0% (95% confidence interval, CI, 22–32) and 40.0% (95% CI 33–47) at 10 and 20 years, respectively. Median survival time without IRA failure was estimated at 26.8 years. Two thirds of secondary proctectomies were performed for refractory proctitis, and 20% for rectal neoplasia. Univariate analysis identified factors associated with IRA failure: IRA performed after 2005, a longer duration of disease at the time of IRA, indication for colectomy and having received immunomodulative agents before IRA. In multivariate analysis, treatment with both immunosuppressant (IS) and anti-TNF before colectomy was independently associated with IRA failure (HR=2.9, 95% CI 1.2–7.1). Conversely, colectomy for severe acute colitis was associated with decreased risk of IRA failure (HR=0.6, 95% CI 0.4–0.97). DISCUSSION:: Patients with UC have a high risk of IRA failure, particularly when colectomy is performed for refractory disease. However, IRA could be discussed after colectomy for severe acute colitis, or in patients naive to IS and anti-TNF. Copyright © 2016 Wolters Kluwer Health, Inc. All rights reserved.
Denost Q.,Lyon University Hospital Center
Annals of Surgery | Year: 2016
OBJECTIVE:: To assess the effect of pelvic drainage after rectal surgery for cancer. BACKGROUND:: Pelvic sepsis is one of the major complications after rectal excision for rectal cancer. Although many studies have confirmed infectiveness of drainage after colectomy, there is still a controversy after rectal surgery. METHODS:: This multicenter randomized trial with 2 parallel arms (drain vs no drain) was performed between 2011 and 2014. Primary endpoint was postoperative pelvic sepsis within 30 postoperative days, including anastomotic leakage, pelvic abscess, and peritonitis. Secondary endpoints were overall morbidity and mortality, rate of reoperation, length of hospital stay, and rate of stoma closure at 6 months. RESULTS:: A total of 494 patients were randomized, 25 did not meet the criteria and 469 were analyzed: 236 with drain and 233 without. The anastomotic height was 3.5?±?1.9?cm from the anal verge. The rate of pelvic sepsis was 17.1% (80/469) and was similar between drain and no drain: 16.1% versus 18.0% (P = 0.58). There was no difference of surgical morbidity (18.7% vs 25.3%; P = 0.83), rate of reoperation (16.6% vs 21.0%; P = 0.22), length of hospital stay (12.2 vs 12.2; P = 0.99) and rate of stoma closure (80.1% vs 77.3%; P = 0.53) between groups. Absence of colonic pouch was the only independent factor of pelvic sepsis (odds ratio = 1.757; 95% confidence interval 1.078–2.864; P = 0.024). CONCLUSIONS:: This randomized trial suggests that the use of a pelvic drain after rectal excision for rectal cancer did not confer any benefit to the patient. Copyright © 2016 Wolters Kluwer Health, Inc. All rights reserved.