CT Imaging Evaluation of Humerus Fractures
Avascular NecrosisHumeral FracturesDisplaced, multi-part intracapsular, proximal humerus fractures represent a major challenge for patients and orthopedic surgeons. Proximal humerus fractures represent the third most common fracture after hip and distal radius fractures, and more than 20% of these fractures meet operative indications. Unfortunately, one of the major complications of these fractures is the development of avascular necrosis (AVN), or death of the bone as a result of the loss of blood supply to it. Currently, the ability to predict AVN is limited. The purpose of this study is to determine if computed tomography imaging can identify a quantifiable predictor of AVN following this type of humeral fracture.
Proximal Humerus Fracture Dislocation Direction and Avascular Necrosis
Proximal Humeral FractureDislocation3 moreThe purpose of the study is to see if there is a connection between a proximal humerus fracture dislocation direction and the likelihood of developing avascular necrosis. Utilizing a retrospective cohort from the last ten years we hope to bring consenting patients back for a single visit to have x-rays and complete patient reported outcome measures to assess for evidence of avascular necrosis.
Anti Tumor Necrosis Factor Alpha Agents and Surgical Stress Response
Inflammatory Bowel DiseasesBackground: The immunologic response to stress is regulated by the cytokines. Anti-Tumor Necrosis Factor-α agents are antibodies directed against a key cytokine in the process angiogenesis and collagen synthesis. It is not known whether they intervene with surgical stress response increasing the rate of postoperative complications. Method: Un-blinded prospective, non-interventional cohort single centre study including all the patients with Crohn's disease and Ulcerative Colitis undergoing abdominal surgery. Immunological and endocrinological parameters will measured in blood samples taken from these patients before and after surgery. Power calculations showed that 17 patients in each arm are needed.
Wound Necrosis in Lower Extremity Surgery
Extremity Lower WoundsResearchers are performing this study to evaluate if intraoperative angiography can be shown numerically to determine which wounds are at high risk of wound necrosis/breakdown.
Acute Necrotizing Pancreatitis and Infected Pancreatic Necrosis
Acute Necrotizing PancreatitisAcute necrotizing pancreatitis is a frequent and potentially lethal disease, especially in case of infected pancreatic necrosis (IPN). IPN usually occurs after the first week of evolution. The step up approach is now widely recommended for the management of IPN. In fact, in case of suspicion of IPN, a drainage percutaneous or transgastric is recommended at first, supported by probabilist antibiotherapy. 1/3 of patients won't require any other interventions. For 2/3 of patients, an additional necrosectomy is necessary. Necrosectomy was formally realized by open laparotomy. Since de last decade, mini-invasive technics have emerged: transgastric necrosectomy, video-assist retroperitoneal debridement. laparoscopy and permitted a decreased of morbidity and mortality. Recently, Hollemans et al. developed a nomogram based on 4 variables (sex, multi-organ failure, % of necrosis and collections heterogeneity) which are negative predictors for success of catheter drainage in IPN with an receiver operating characteristic (ROC) curve at 0.76. The aim of this study is to validate on a large retrospective cohort Hollemans nomogram in predicting catheter drainage success. Secondary aims are to evaluate possible others predictors for success of catheter drainage in IPN and to evaluate the impact of antibiotherapy on microbiological results and on the need for an additional necrosectomy regarding its type and duration, as well as the emergence of multiresistance organism.
The Necessity and Optimal Time for Performing Pars Plana Vitrectomy in Acute Retinal Necrosis Patients...
Acute Retinal NecrosisThe records of patients who were diagnosed with ARN between April 2010 and February 2017 were analyzed.A retrospective review of the treatment options and outcomes of the these patients was performed.
French Observatory Syndromes Tako-Tsubo
Myocardial NecrosisTako Tsubo SyndromesTako Tsubo syndrome (TTS) is characterized by the occurrence in the context of mental or physical stress, a clinical and ECG of acute myocardial infarction without significant coronary artery stenosis, accompanied by a disorder Acute, reversible left ventricular who takes on a characteristic apical ballonnisation evoking the image of a Japanese octopus trap called Tako (octopus) tsubo (jar). Pathophysiology of unknown changes immediate life-threatening prognosis is often good in the longer term.
Prospective Study Measuring Clinical Outcomes of Knee Arthroplasty Using the VERASENSE™ Knee System...
OsteoarthritisAvascular Necrosis2 moreThe primary objectives of this evaluation are: 1) To attempt to refine the current clinical understanding of "balance" 2) To determine if patients with quantifiably balanced knee joints exhibit improved clinical outcomes versus patient with residual imbalance, as measured by the VERASENSE™ Knee System Secondary objectives: Determine whether a difference in inter-compartment loads and soft tissue tension exists between the physicians intra-operative feel compared to the quantifiable data measured by the VERASENSE™ Knee System Determine which ligament releases are performed by the surgeon to improve soft tissue balance while utilizing the information from the VERASENSE™ Knee System Evaluate range of motion, pain, physical function, activity level, and patient satisfaction between baseline (pre-operative) and post-operative follow-up as well as radiographic success and survivorship of the knee implants
THRA_hematologic Variables
Avascular Necrosis of HipTotal hip replacement arthroplasty is a surgery having intra- and postoperative substantial blood loss. The investigators will investigate the relationship between the various hematologic variables and postoperative bleeding volume.
A Study to Determine the Number of Participants With Rheumatoid Arthritis (RA) Who Meet the Requirements...
Rheumatoid ArthritisThis is an observational study to estimate the proportion of patients diagnosed with RA visiting a medical internist in a general hospital in Korea who are candidates for anti-TNF α therapy.