Clinical Research Directory

Can Intraosseous Antibiotics Improve the Results of Irrigation & Debridement and Prosthetic Retention for PJI?

Purpose of Study: In order to improve upon the variable results seen in irrigation and debridement for periprosthetic infection, we ask if the use of intraosseous regional administration of antibiotics at the time of irrigation and debridement will improve the modest success of standard irrigation and debridement. We will use the existing literature on standard irrigation and debridement procedures to compare with the results of the irrigation and debridement with the use of intraosseous antibiotics. Impact Question: How will this study benefit the patient? Currently when an I\&D fails, the patient needs to undergo two more major procedures: 1) implant removal and 2) reimplantation of the prosthesis. Any improvement in the results of a standard irrigation and debridement procedure may decrease the number of patients having to go through further extensive procedures to cure their infection.

Real-component vs All-cement Articulating Spacers for Periprosthetic Knee Infection

In the US, if an infection in an artificial knee joint doesn't heal with antibiotics alone, the standard treatment is a two-stage revision of the artificial knee. In the first stage, the surgeon will remove the artificial knee and clean out the area around the knee. They will then place an antibiotic spacer. An antibiotic spacer is a type of artificial joint that will release antibiotics into the knee space continuously over time. The spacer allows only very basic function of the knee. The patient may need to use crutches or a walker while the antibiotic spacer is in place. After surgery to place the antibiotic spacer, the surgeon may prescribe a course of antibiotics as well. Because the antibiotic spacer is not as durable as a regular artificial joint, after the infection is gone, another surgery is required to take the spacer out and put a new artificial knee joint in. There is another way for artificial joint infections to be treated. This is a one-stage revision. In this treatment, the surgeon will remove the artificial knee and clean out the area around the knee. Then the surgeon will place a new artificial knee in using a special kind of cement that contains antibiotics. The cement will release antibiotics into the knee space continuously over time (the surgeon may prescribe a course of antibiotics as well). The new artificial joint with antibiotic cement will function almost the same as the original artificial knee. This means that while the infection is healing the patient will be able to do most of the regular daily activities. However, the antibiotic cement is not as durable as what is normally used to implant an artificial knee. The artificial knee with the antibiotic cement may need to be replaced with a regular artificial knee. When replacement will need to be done is dependent on patient weight, bone strength and activity level, among other things. When it is time to replace the antibiotic cement artificial knee, the patient will have another surgery where the surgeon will take the antibiotic cement artificial knee and put a new artificial knee joint in. Investigators know that both the one- and two-stage revision work equally well to heal the infection, but investigators don't know which patients prefer or which provides better function after many years. This study will randomly assign patients to receive either a one-stage or two-stage revision and then follow them for 5 years to ask them about pain, function, and satisfaction.

Controlled Trial of Omadacycline Randomized Treatment Given for Bone and Joint Infection

The study design is a randomized, open-label, clinical trial of omadacycline vs Standard of Care (SOC) antibiotics for bone and join infection (BJI) treatment. Study participants will have their BJI regimen chosen by their treating physicians, (typically Infectious Diseases for hardware and prosthetic joint infections, or multidisciplinary Limb Salvage team for diabetic foot infections) prior to enrollment. Then participants will be randomized to an omadacycline-containing regimen versus the a priori chosen SOC regimen. Participants must require between 4 and 12 weeks of therapy for their BJI. The exact duration of therapy will be decided by the participants' treating physician. At 12 weeks, if the treating physician wishes to extend therapy, participants receiving omadacycline will be transitioned to other SOC antibiotics. Once enrolled, participants will be followed via in-person clinic visits at the following intervals: weeks 0, 2, 4, 8, and 12. A final in-person visit will occur 2 weeks post-treatment completion. A phone survey will occur 3 months post-treatment completion. Participants in the SOC group will follow the same schedule. Oral once-daily dosing options for S. aureus and Coagulase negative Staphylococcus are essentially non-existent. Thus, omadacycline possesses a novel and advantageous option for BJI treatment. Its convenient dosing regimen will almost certainly be associated with improved adherence, and higher adherence may, in turn, improve clinical outcome. Investigators hypothesize that omadacycline will be a well-tolerated and efficacious oral antibiotic for BJIs and will be associated with improved adherence compared with standard of care oral antibiotics. Investigators believe omadacycline addresses the unmet need for an oral antibiotic that is well-tolerated and efficacious for use as a prolonged therapy for BJIs. To this aim, investigators will perform a randomized, open-label clinical trial of omadacycline to SOC antibiotics for BJIs.

Alpha-Defensin and Synovial Proteins to Improve Detection of Pediatric Septic Arthritis

Differentiating between septic arthritis and other causes of joint inflammation in pediatric patients is challenging and of the utmost importance because septic arthritis requires surgical debridement as part of the treatment regimen. The current gold standard to diagnose septic arthritis in children is a positive synovial fluid culture; however, joint cultures may take several days to return. If a bacterial infection is present, it requires immediate surgical intervention in order to prevent lasting articular cartilage damage. Frequently surgeons must decide whether to surgically debride a joint before culture results are available. There is no single lab test or clinical feature that reliably indicates bacterial infection over other causes of joint inflammation. The alpha-defensin assay has shown high sensitivity and specificity for joint infection in other studies.The purpose of this study is to determine the sensitivity and specificity of several synovial biomarkers for diagnosing pediatric septic arthritis.

Rate of Total Joint Infection 90-day After Surgery Following Irrigation With Next Science No-Rinse Solution vs SOC Alone

A prospective, single-site, double-arm, parallel, interventional, randomized, controlled clinical trial to assess 90-day rate of joint infections in subjects undergoing primary hip replacements after administration of Next Science No-Rinse Solution (hereby referred to as NS) vs SOC (saline irrigation). The Next Science treatment arm will exhibit greater reduction in rate of 90-day post-operative joint infection than SOC (saline) arm

Initial Oral Antibiotics for Bone and Joint Infections in Children

Initial oral antibiotic treatment for children and adolescents with uncomplicated bone and joint infections (BJI) has been found non-inferior to initial IV antibiotics in one randomized controlled trial (RCT). The real-world effectiveness of initial oral antibiotics for children and adolescents with BJI is unclear. This nationwide, prospective, multicenter, real-world cohort study aims to compare the effectiveness and safety of initial oral antibiotic treatment for children and adolescents with uncomplicated BJI in a real-world setting with those who received initial oral antibiotics in our RCT.

Side Effects of Antibiotics in Bone and Joint Infections

Treatment for bone and joint infection (BJI) is not standardized, which allows a wide range of antibiotic therapy to potentially be given, most often in high doses over long periods of time. Patients are regularly confronted with the adverse effects of these antibiotics, which can lead to loss of adherence and treatment failure. The frequency, severity and impact on quality of life of the adverse effects of long-term antibiotics will be studied in a cohort followed for one year.

Results of Extended Versus Single Dose Antibiotic Prophylaxis In Orthopedic Revision Arthroplasty in Nijmegen.

The goal of this randomized control trial is to investigate the superiority of 5 days (extended) versus a single dose of cefazolin prophylaxis in revision arthroplasty of the hip and knee. The main question\[s\] it aims to answer are: * Is an extended regimen compared to a single dose of cefazolin associated with an increased infection-free implant survival within one year after index revision arthroplasty of the hip or knee? * What are the incidence, risk factors, treatment outcome and prognosis of surgical site infections and periprosthetic joint infection during follow-up? * What is the safety and tolerance of the antimicrobial prophylaxis regimens used? * What are the antimicrobial susceptibility patterns of micro-organisms causing PJI during follow-up? * What is the patient' physical performance and satisfaction of subjects within 1 year after the index revision arthroplasty, using patient related outcome measurements (PROMS)? \[question 2\] Participants will \[describe the main tasks participants will be asked to do, treatments they'll be given and use bullets if it is more than 2 items\]. If there is a comparison group: Researchers will compare \[insert groups\] to see if \[insert effects\].