22 Clinical Trials for Various Conditions
The purpose of this study is to examine the short term efficacy of the MRH system as well as determine if operating room time is decreased using this simple, two-tray system.
This is a pilot study to compare systemic concentrations of cobalt and chromium in patients that have previously undergone total hip arthroplasties with ceramic on metal and metal on metal bearing surfaces.
The purpose of this study is to assess the safety and effectiveness of the OR3O™ Dual Mobility System. The study will evaluate the outcome of the Total Hip Arthroplasty using the OR3O™ Dual Mobility System over a ten year period. Survivorship of THA will be assessed up to ten years.
In a previous study conducted within the Center for Musculoskeletal Research (CMR) on Total Hip Arthroplasties (THA), it was determined that the investigators could simultaneously capture in vivo sound and motion of the femoral head within the acetabular cup during weight-bearing activities for subjects implanted with either a metal-on-polyethylene (MOP), metal-on-metal (MOM) or ceramic-on-ceramic (COC) THA. This was the first study to apply sound analysis as an impulse excitation technique for testing hip conditions and for measuring femoral head sliding in the acetabular component of human hip joints by acoustic means. Unfortunately, no studies have been conducted to compare the in vivo kinematics and sound for subjects implanted using various surgical approaches. It could be hypothesized that subjects having various surgical approaches could lead to an increase or reduction of in vivo hip separation. Therefore, the objective of this study is to analyze a total of 30 subjects implanted with either an anterior (10 patients), anterior-lateral (10 patients), or posterior-lateral (10 patients) surgical approach to determine if any of these surgical approaches leads to less or more in vivo hip separation. All subjects will be analyzed under in vivo weight-bearing conditions using video fluoroscopy to determine in vivo motion.
The purpose of the study is to improve image quality, increase speed of scanning and to see how well certain products test by scanning people who have an orthopedic hip or knee metallic implant.
The study will describe the short-term effects the study drug, rivaroxaban, has on the body when a patient is switched from enoxaparin injection (by needle) to oral rivaroxaban (by mouth) for the prevention of blood clotting in the veins after elective total hip or total knee replacement surgery. After providing written informed consent, screening procedures will be completed to assess eligibility. After enrollment, all patients will be switched from enoxaparin to rivaroxaban. Blood samples for the short-term effects of rivaroxaban will be taken at various times while in the subacute unit. At the time of discharge, if the study doctor feels it is appropriate, an adequate supply of rivaroxaban will be provided to complete the full course of therapy. Upon completion of rivaroxaban therapy, all patients will be required to have final study procedures performed. Safety evaluations at the final visit will include clinical blood laboratory tests, a physical examination, urine pregnancy test (if applicable), recording of any adverse events including details regarding any bleeding episodes or blood clot events, and assessment of the surgical wound. All patients will return any unused study medication and study participation will be complete.
The objective of this study is to analyze subjects having a normal hip and compare the in vivo kinematics to subjects requiring a total hip arthroplasty (THA) due to having a diseased hip and then later post-operative to their implanted hip. Ten subjects will have a normal hip, ten hips will be diseased, requiring a THA and then those ten diseased hips will be re-analyzed at least six months post-operatively after implantation of a THA.
The specific aim is to quantify the stability of the acetabular and femoral components of a revision total hip arthroplasty (THA) in vivo as currently performed at our institution. In this way, the investigators will gain insight into the outcome of the current state of the art of revision arthroplasty surgery. In the past, acetabular and femoral component stability has been measured using radiostereometric analysis (RSA) and when patients having revision total hip operations were compared to patients undergoing primary total hip operations it was possible to determine differences in stability and this was predictive of the intermediate to long-term performance of the acetabular and femoral reconstruction. The investigators propose to use this established, high resolution technique to assess and compare the stability of the revision implants.
This is a multi-center, randomized study to compare blood and urine cobalt, chromium, and titanium ion levels of a metal-on-metal articular bearing coupled with two different head sizes to that of a conventional metal-on-polyethylene bearing.
Evaluate the accuracy of Radlink System in determining acetabular cup placement and limb length evaluation during Anterior hip replacement as measured intraoperative with C-Arm visualization and confirmed with digital x-ray at 4-6 weeks postoperatively.
The purpose of this study is to determine the impact of surgical fixation (cancellous screws versus sliding hip screws) and biologic intervention (Vitamin D versus placebo) on patient important outcomes.
Each year, hip fracture, an injury that can impair independence and quality of life, occurs in about 280,000 Americans and 36,000 Canadians. The annual healthcare costs associated with this injury are expected to soon reach $9.8 billion in the United States and $650 million in Canada. It is important to have in place optimal practice guidelines for the surgical handling of this injury. One type of hip fracture, called a femoral neck fracture, is often treated with a surgical procedure called internal fixation. When performing internal fixation, most orthopaedic surgeons favor using multiple small diameter screws over using a single large diameter screw with a sliding plate. However, use of the sliding hip screw might in fact result in fewer complications after surgery and reduce the need for a second surgery, called a revision surgery. This study will compare the two different surgical procedures to determine which one results in better outcomes after surgery.
The purpose of this research study it to gather information on the safety and side effects of treating cartilage defects with autologous cartilage cells mixed with allogeneic adipose-derived mesenchymal stem cells (AMSCs) in a fibrin glue.
The purpose of this research is to see if the Arthrex LoopLocTM device is better for capsular closure during hip arthroscopy than other treatments available. The hip capsule is the tissue that surrounds your hip joint. It stabilizes and supports your hip joint. During hip arthroscopy, this tissue must be cut through in order to perform the hip arthroscopy. Once the hip arthroscopy is completed, the surgeon might repair the capsule. Current ways of repairing the capsule include knotted suture that might irritate structures around the hip, leading to the possible formation of scar tissue and pain. The Arthrex LoopLocTM device is knotless and may lower the presence of irritation and scar tissue around the hip after surgery and might lead to better outcomes. Therefore, researchers will compare patients who had the LoopLocTM device used to close their hip capsule during surgery to those who did not have the device used, to see if there is a difference in their outcomes following surgery.
The purpose of this research is to evaluate two different standard of care surgeries in treating periprosthetic joint infection (PJI) after total hip and knee arthroplasty. Researchers are looking at differences in outcomes following single versus planned double debridement, antibiotics, and implant retention (DAIR) for acutely infected total hip arthroplasty (THA), and total knee arthroplasties (TKAs).
This is a prospective, single-center study design with enrollment of 15 subjects. The 15 subjects will all undergo standard gluteus medius repair that includes augmentation with the biointegrative implant. This is a small observational study. As such, we expect that the results from 15 subjects will give an adequate understanding of post surgical healing.
This is a post-market, retrospective with one prospective visit, multi- center study, designed to assess the clinical outcomes, surgical details including Anterior or Posterior surgical approach, and collect all complication data of Medacta Versafit Cup DM used for primary or revision total hip arthroplasty at minimum two year post- operatively.
The primary purpose of this study is to demonstrate cumulative revision rate of the REDAPT System Monolithic Sleeveless/Sleeved Stem, Fully Porous Acetabular Shell with XLPE liner, and Modular Shell Components (with or without Staple, Slice and Blade Augments) at 10 years.
Patients with a total hip replacement may require early revision surgery due to an adverse local tissue reaction or bone resorption that occurs due to wear debris released from the implant. MRI provides a non-invasive biomarker for clinicians and surgeons to detect early adverse synovial reactions which may exist in the absence of clinical symptoms, thus imparting essential information for clinical management. This study will address two of the most commons causes of hip implant failure, including adverse local tissue reaction in implants not traditionally associated with adverse tissue reactions, as well as the presence of aseptic loosening and loss of implant-bone integration.
Prospective, randomized study of Summit Porocoat versus Summit DuoFix HA in total hip arthroplasty
The annual incidence of geriatric hip fractures in the United States is 325,000 and is projected to rise given the aging population.1 The mainstay of treatment is cemented hip hemiarthroplasty. Bone cement implantation syndrome (BCIS) is a serious perioperative complication unique to cemented arthroplasty characterized by hypoxia, hypotension, cardiac arrhythmias, and in severe cases, cardiac arrest. BCIS is associated with significantly higher rates of unplanned intubation, vasopressor use, prolonged hospitalization, and 30-day mortality. Given the rising incidence of hip fractures, the identification of readily modifiable risk factors for BCIS such as anesthetic regimen is crucial to reduce morbidity and mortality. However, a prospective study comparing the rate of BCIS development between general and neuraxial anesthesia is currently lacking. Additionally, no studies have examined how the anesthetic regimen affects histamine and complement levels. Therefore, this pilot study aims to investigate the effect of anesthetic regimen on BCIS development as well as on histamine and complement levels in patients undergoing cemented hemiarthroplasty for hip fracture. The investigators hypothesize that neuraxial anesthesia will be associated with lower rates of BCIS as well as lower histamine and complement levels compared to general anesthesia. The primary objective of this pilot study is to compare the effect of general and neuraxial anesthesia on the incidence and severity of BCIS in patients undergoing cemented hemiarthroplasty for hip fracture. Secondary objectives include examining postoperative outcomes associated with BCIS, such as cardiac arrhythmias, unplanned intubation, hypoxia necessitating supplemental oxygen, altered mental status, and in-hospital mortality. Additional objectives include comparing histamine and complement levels between anesthetic regimens as well as between patients with and without BCIS
A Retrospective-Prospective Study of REDAPT Revision Femoral System Modular Stem is a post-market, retrospective-prospective, multi-center, single arm, consecutive series study design to provide data on the post market performance and safety of the study device. The study will collect retrospective data from medical records review and prospective data from observations data at 5 and 10 postoperatively clinical visits. There will also be a 7.5 year telephone follow up contact to assess for device status and adverse events.