Septic Arthritis

A PJI is a severe complication of arthroplasty surgery and one of the leading causes of revising joint replacements. It accounts for 19% of shoulder arthroplasty and 28% of elbow arthroplasty revisions. The successful management of patients with PJI depends on an early and accurate diagnosis, however, this can be challenging. To optimise the diagnosis of PJI, a combination of clinical findings, laboratory results from peripheral blood and synovial fluid (WBC and CRP), microbiological data, histological evaluation of periprosthetic tissue, intraoperative inspection, and radiographic results are considered. Percutaneous joint aspiration makes an integral part of each of the diagnostic criteria for PJI (EBJIS, MSIS, ICM, and IDSA) and the current shoulder and elbow PJI guidelines from the British Elbow and Shoulder Society (BESS) state that a joint aspiration should be attempted in all patients. Aspiration allows for the identification of bacteria, the determination of antibiotic resistance and sensitivity patterns to guide anti-microbial management before surgery at relatively low costs, however, aspiration has a large variance in its diagnostic value. Studies have been performed to assess the diagnostic accuracy of percutaneous joint aspiration of suspected PJI in hip and knee arthroplasty but there is currently no evidence of utility in the diagnosis of PJI in shoulder and elbow arthroplasty. The organisms causing PJI in shoulder and elbow arthroplasty may be different from lower limb arthroplasty and this may impact the accuracy of investigation findings. Cutibacterium (Propionibacterium) acnes is commonly isolated following upper limb surgery and is skin commensal. Therefore, distinguishing its presence as a pathogen can prove challenging due to its low virulence, limited local inflammatory response, biofilm formation, difficulty in culturing the bacteria and rising resistance rate to anti-microbial agents. This makes it even more essential that diagnostic tests can accurately identify causative PJI pathogens. The gold standard for the diagnosis of PJI is open biopsy. This is usually performed by obtaining tissue samples intraoperatively. Radiologically guided biopsy is also recommended to be performed in certain cases e.g. not clinically confirmed PJI and surgery not feasible. To improve the diagnostic accuracy in suspected PJI of the shoulder and elbow, it has been hypothesised that pre-revision tissue biopsies, much like that for hip and knee arthroplasties, for microbiological and histological analyses are of superior diagnostic value than percutaneous aspiration.

The study population is participants with confirmed or suspected Gram-positive bacteria causing early (ie, within 1 month of TKA) or acute hematogenous (within 3 weeks of infection symptoms) PJI requiring or not requiring DAIR therapy following TKA, or requiring long-term antibiotic suppression therapy for PJI (including PJI occurring after various joint replacement and revision surgeries). Participants will undergo screening assessments within 7 days prior to study start.

1. To understand the severity and nature of participants experiences during rheumatic immune-related adverse events following immune checkpoint inhibitor immunotherapy, including their functional impact 2. To explore domains relevant to participants experiencing rheumatic immune-related adverse events following immune checkpoint inhibitor immunotherapy, and attitudes to domains identified from the literature

A total hip replacement is one of the most successful and cost-effective surgical procedures in orthopaedics, and involves replacing both the hip ball and socket. Its goal is to provide pain relief, allowing the person to return to a normal lifestyle. JRI Orthopaedics have developed the ACE Acetabular Cup System, which has a H-A.C. coating to promote ossoeintegration of the device within the host bone. To increase the surgeons choice and thus suitability for the patient, there is the option of 3 different socket liners (ceramic, polymer or dual mobility). To ensure maximum safety and performance of medical devices surveillance of the device should be carried out over the devices lifetime. This study is a 10 year surveillance study to assess the clinical, functional and radiological outcomes of the CE-marked ACE Acetabular Cup System. This is done by examining patient outcomes through questionnaires, reviews of X-rays and complications by patients who have received a total hip replacement using the ACE Acetabular Cup System at participating sites.

Acutelines is a prospective biobank including patients with a broad spectrum of acute conditions. Its aim is to facilitate interdisciplinary research on the etiology and development of acute diseases with the aid of systematically collected biomaterials and medical data over various timepoints, both during the course of the patient's disease and after recovery. Clinical data, imaging data and biomaterial (i.e. blood, urine, feces, hair) are collected for patients presenting to the Emergency Department (ED) with a broad range of acute disease presentations. A deferred consent procedure (by proxy), is in place to allow collecting data and biomaterials prior to obtaining written consent. The digital infrastructure in place and the software used ensures automated capturing of all bed-side monitoring data (i.e. electrophysiological waveforms, vital parameters), and the secure importation of data from other sources, such as the electronic health records of the hospital, ambulance and general practitioner, municipal registration, health insurance companies and pharmacy. Follow up data are collected for all included patients during the first 72-hours of their hospitalization and 3-months, 1-year, 2-years and 5 years after their ED visit. Data and materials to be collected includes: * Demographic and health data (i.e. \[experiences\] health, quality of life, functional status) * Medical history (i.e. co-morbidity, intoxications, medication use) * Admission reason to emergency department * Physical examination and vital parameters * Clinical diagnostic data (i.e. \[point-of-care\] ultrasound, X-ray, CT-scan, laboratory results) * Electrophysiological waveforms (i.e. electrocardiogram \[ECG\], plethysmography) * Biomaterials * Treatment (i.e. medication use, non-pharmacological treatment, treatment decisions, length-of-stay in hospital, admission to intensive care unit \[ICU\])

The purpose of this study is to determine if alpha-defensin and other proteins present in joint fluid may be able to rapidly diagnose bacterial joint infections. Patients with suspected joint infection typically undergo joint aspiration so that tests can be performed to help diagnose joint infection, including gram stain, cell count, and culture. Patients under 18 years old that are undergoing sampling of their joint fluid due to suspicion of infection or inflammation will be enrolled in this multi-center trial. Joint fluid will also be sampled from normative controls made up of patients who are undergoing an unrelated procedure without inflammation or infection. Joint fluid from patients with suspected inflammation/infection and from normative controls will be analysed for presence of alpha-defensin, leukocyte esterase, neutrophil elastase, synovial C-reactive protein, and synovial lactate. The alpha-defensin assay has shown high sensitivity and specificity for joint infection in other studies. Additionally a Staphylococcus spp antigen panel, Candida spp antigen panel, Enterococcus faecalis assay, BACTAlert culture, cell count plus differential, gram stain, and aerobic, anaerobic, and fungal cultures will be done using synovial fluid. A synovial fluid PCR for Kingella kingae will be performed if the patient is under eight years of age. Blood tests will include cell count and differential, erythrocyte sedimentation rate, C-reactive protein, procalcitonin, and D-dimer, as well as relevant inflammatory or rheumatologic marker tests. Results from these tests will be compared to joint fluid culture which the gold standard for diagnosing bacterial infection. The study includes 1 visit per patient, the standard of care visit in which the patient would be undergoing joint aspiration or arthroscopy. Once data has been collected, the sensitivity and specificity will be determined for these experimental tests both individually and in combination.

Influenza infection is an important public health priority, with seasonal outbreaks and pandemics causing considerable global morbidity and mortality. The PK, pharmacodynamics (PD), safety and efficacy of IV zanamivir have been evaluated in adults, adolescents and infants more than or equal to (\>=) 6 months of age with hospitalized influenza in the IV zanamivir global development program. However, antiviral treatment of neonates and infants under 6 months of age hospitalized with influenza infection remains a medical unmet need. Given the immaturity of the immune system at this age, there are no licensed influenza vaccines for children aged less than six months old. As a requirement of the Pediatric Investigation Plan European Union (EU), GlaxoSmithKline (GSK) will be conducting this open-label, multi-center, single arm, post-marketing authorization study to evaluate the PK and collect safety and tolerability information of IV zanamivir in hospitalized neonates and infants under 6 months of age with confirmed complicated influenza infection. The total duration of study participation for each participant will be up to 24 days with a study treatment period up to 10 days and 14 days of post-treatment follow up. However, for a given participant, the initial 5-day treatment course may be extended for up to 5 additional days if clinical symptoms, participant characteristics or virological tests as assessed by the investigator warrant further treatment. DECTOVA is a trademark of GlaxoSmithKline group of companies.

Total anatomic shoulder arthroplasty (TSA) is an effective treatment of severe glenohumeral osteoarthritis, with significant improvement in shoulder pain and function. Concerns about glenoid loosening, associated with difficult revision procedures and disappointing outcomes, have however been raised. Reverse total shoulder arthroplasty (RTSA) was designed with a medialized center of rotation to treat cuff tear arthropathy. Favorable early reports led to the expansion of primary indications of RTSA to proximal humeral fractures as well as osteoarthritis with poor glenoid bone stock. Recent reports revealed excellent clinical results of RTSA for primary glenohumeral arthropathy with intact rotator cuff and a low rate of complications. Retrospective studies comparing functional results - of anatomic TSA for treating glenohumeral osteoarthritis with RTSA for rotator cuff arthropathy - found equivalent or greater improvements in American Shoulder and Elbow Surgeons score (ASES) at \>2-year follow-up. In a study comparing anatomic TSA to RTSA for the treatment of glenohumeral osteoarthritis with intact rotator cuffs, Steen et al. reported equivalent functional results at \>2-year follow-up. The retrospective matched cohort study could, however, not eliminate biases, such that RTSA patients had higher preoperative glenoid retroversion than anatomic TSA patients. The authors therefore hypothesize that, in patients treated for glenohumeral osteoarthritis without excessive glenoid retroversion, RTSA will render better functional outcomes than anatomic TSA, at 2 postoperative years. Many other studies confirmed in 2019 Steen's hypothesis. Moreover, several studies revealed good long-term survivorship after RTSA. There are no published prospective studies that compared 2-year functional outcomes of RTSA and anatomic TSA for the treatment of primary glenohumeral osteoarthritis with intact rotator cuffs and no excessive glenoid retroversion. The primary goal of our prospective randomized study is to determine whether RTSA have at least as good results as anatomic TSA (non-inferiority), in patients with glenohumeral osteoarthritis, without rotator cuff tears nor significant glenoid retroversion.The secondary goals are 1) to evaluate whether RTSA eventually grants superior postoperative clinical and radiographic outcomes than anatomic TSA (superiority), 2) to determine whether RTSA is associated with fewer postoperative complications than anatomic TSA.

In patients with distributive shock (≥18 years) with noradrenaline \>0,3 mcg/kg/min and vasopressin \>0,03 IE/min not achieving an appropriate mean arterial pressure (65-85 mmHg) an angiotensin II infusion will be started at 20 ng/kg/min and after that adjusted to a max dose of 40 ng/kg/min if needed. Before the infusion and 6 hours after the start of angiotensin II infusion a blood sample will be drawn to determine the renin concentration. The primary outcome will be organ failure free days and ICU free days. Secondary outcome will be the need for vasopressors, dialysis, mechanical ventilation, trend of renin concentration.

Total hip replacement is the most successful treatment modern healthcare can offer patients to regain quality of life. Periprosthetic joint infection (PJI) is the most common and devastating complication after total hip replacement (THR). Between 0.5 to 2% of primary THR (first time hip replacement), and 8-10% of revision THR (replacement of a hip prosthesis) will become infected.1 The introduction of local antibiotics blended into bone cement has led to a reduction in postoperative infection in primary THR by half.2 Unfortunately, cement can't always be used in relevant quantities. The number of primary and revision surgeries of the hip is projected to increase dramatically. Therefore, the need for a feasible infection prophylaxis that is applicable for complex primary and revision THR in addition to antibiotics loaded cement is urgent. Impacted morselized bone allograft is often used in (revision) THR to fill bone defects. Morselized allograft has been used as a carrier for local antibiotic treatment in multiple pilot studies and appears to be an attractive and effective treatment option, both for already infected joints and as a prophylactic measure in high-risk patients (e.g. THR revision surgeries). Nonetheless, a pivotal trial to support its use in THR is lacking. The aim of this pragmatic randomized controlled double blinded drug trial is to investigate whether antibiotic impregnated bone graft (AIBG) decreases the risk of infection after hip arthroplasty compared to controls treated with placebo impregnated bone graft. Patients scheduled for elective THR will be randomized to receive AIBG or a placebo impregnated bone graft. The primary outcome variable will be the number of re-operations due to infections and PJI diagnoses 2 years postoperative.