Active clinical trials for "Osteoarthritis"

To determine if robotically-assisted UKA results in more consistent and improved component positioning and better patient reported outcome scores compared to manual TKA and MAKO TKA.

The purpose of this study is to evaluate the basis for three widely held fundamental tenets about surgical intervention for thumb basal joint arthritis; Trapeziectomy with ligament reconstruction and metacarpal stabilization is associated with superior functional outcomes and strength, Preservation of the arthroplasty space correlates with functional outcomes, pain relief, and restoration of strength after basal joint arthroplasty, and Mitigation of metacarpophalangeal joint (MCPJ) hyperextension optimizes postoperative strength after basal joint arthroplasty, regardless of surgical technique. It is hypothesized that thumb basal joint arthroplasty with metacarpal stabilization, by either ligament reconstruction (I) or suture suspension (II), provides greater improvement in grip and pinch strength, and better hand function, than might be achieved following provision of pain relief alone by simple trapeziectomy (III). Preservation of the arthroplasty space will correlate positively, and MCPJ hyperextension will correlate negatively, with improved thumb function and lateral pinch strength. Primary Aims (within 3 procedure cohorts): Compare pre-operative pinch and grip strength as well as patient-reported outcomes (PROs) for pain in patients before and after lidocaine injection of the trapeziometacarpal joint, prior to thumb basal joint arthroplasty; Compare post-operative pinch and grip strength and PROs for pain and function at 3 and 6 months after thumb basal joint arthroplasty with pre-operative values before and after lidocaine injection; Correlate preservation of dynamic arthroplasty space as measured on a stress radiograph with postoperative improvement in pinch and grip strength, and PROs for pain and function; Correlate dynamic MCP joint position and laxity with change in strength and patient-reported pain and function to define optimal MCPJ position. Secondary Aims (between 3 procedure cohorts): Compare change in pre- and post-operative pinch and grip strength and PROs for pain and function between patients having basal joint arthroplasty with and without specific metacarpal stabilization; Compare preservation of the dynamic arthroplasty space and improvement in strength and patient-reported pain and function between arthroplasty groups; and Compare changes in pinch and grip strength and PROs for pain and function with dynamic MCPJ position between arthroplasty groups. Compare postoperative neuritis and complications between surgical groups.

Certain ligaments in the human body are designed to be a static stabilizer and others to have a sensory function thus remains an unresolved issue. The presence of mechanoreceptors (sensory corpuscles and free nerve endins) in the human knee and ankle ligaments has implies a sensory role of ligaments in providing afferent information, which in turn regulates intrinsic stiffness in the muscles surrounding the joint, contribuiting to dynamic joint stability. The aim of this study is to use immunohistochemical methods to analyze the general innervation and possible existence of sensory corpuscles in the thumb carpometacarpal (CMC) joint. This study can help to know the contribution of the tendon insertions and ligaments in the dynamic thumb CMC joint stability.

The purpose of this study is to cast light on the highly complex etiology and cellular landscape of hip osteoarthritis by utilising single-cell and spatial transcriptomics.

This data collection project is intended to provide clinical outcomes data to engineering, marketing as well as fulfill the post market surveillance requirements of various regulatory authorities. The study will be a prospective and one-arm.

The diagnose of symptomatic osteoarthritis in the ankle, mid- and hind foot remains challenging. There is no gold standard for the work-up and various hospitals use different protocols. Current literature shows a promising role for SPECT-CT imaging in ankle, hind- and midfoot OA. In a previous study investigating the role of SPECT-CT in a reproducible group we have observed a change in diagnosis in 53% when SPECT-CT data was added to the data of conventional workup alone. In 26% of patients addition of SPECT-CT data resulted in change of the original treatment plan. To our knowledge no prospective studies are available on this subject for both SPECT-CT and MRI. In our clinic both SPECT-CT and MRI are used in the work-up for patients with ankle, hind- and midfoot pain. Although we experience good result with SPECT-CT, MRI might be able to detect symptomatic OA as well. Moreover MRI provide more information about soft tissue and is less harmful for the patient in comparison to SPECT-CT. The aim of this study is to determine the diagnostic performance of SPECT-CT and MRI when used routinely in patients with symptomatic OA of the ankle, hind- and midfoot.

This study perform to investigate the relationship between quadriceps femoris (QF) strength, QF thickness, femoral cartilage thickness, knee function, balance, kinesiophobia and gait of the patients with knee osteoarthritis.

Osteoarthritis is a very common pathology, especially in an aging population, and a source of disability. Based on standard radiography, the diagnosis is performed late based on the loss of the cartilage thickness. In this context, prosthetic replacement of the joint is a frequent outcome. New diagnostic biomarkers and herapeutic targets are therefore logically research priorities identified by the European League Against Rheumatisms, osteoarthritis ad hoc committee. The inflammation related to the development of this pathology is mainly studied at the cellular level and essentially in animals. Since inflammatory and vascular phenomena are closely intertwined, medical imaging of the subchondral bone vascularization appears interesting. The dynamic contrast-enhanced T1 Dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) technique allows the identification of changes in the osteoarthritic subchondral bone vascularization. In osteoarthritic animals, these changes could be identified before the cartilaginous lesions became visible, and could be correlated with the severity of osteoarthritis. This study would be the first to correlate subchondral bone perfusion measurements (performed with the DCE sequence) of early cartilaginous lesions of the knee, identified by non-invasive MRI (T2 mapping) in humans. This examination will be performed on a 3 Tesla MRI. If a correlation is demonstrated in the early stages of osteoarthritis in both humans and animals, then infusion of subchondral bone could become a biomarker of osteoarthritis, and serve as a follow-up evaluation of future treatments.

The goal of this observational registry study is to collect data related to patient reported outcomes (pain, function, quality of life, toxicity) in osteoarthritis (OA) patients receiving standard of care radiation therapy (RT).

All artificial joint implants need to be solidly held (fixed) within the bone. Cementless fixation has become a popular method to achieve fixation for total knee replacements where the bone grows directly onto the implanted device instead of using bone cement. The primary purpose of this study is to assess long-term implant survivorship and clinical outcomes of a previous study cohort that received a cementless knee replacement. As this study cohort approaches 5 years post-operation, the investigators will re-examine the stability of participant implants using specialized x-rays, called "radiostereometric analysis". The study will use weight-bearing computed tomography (CT) to measure bone density and texture features and correlate that with implant stability. The investigators will collect stool samples to assess participant gut microbiomes for biomarkers of poor bone quality that could correlate to implant stability. All 33 participants from the original study cohort will be invited to participate in this study.