CSF1-R inhibition attenuates posttraumatic osteoarthritis and quadriceps atrophy following ligament injury.

Knee osteoarthritis contributes substantially to worldwide disability. Post-traumatic osteoarthritis (PTOA) develops secondary to joint injury, such as ligament rupture, and there is increasing evidence suggesting a key role for inflammation in the aetiology of PTOA and associated functional deficits. Colony stimulating factor 1 receptor (CSF1-R) has been implicated in the pathogenesis of musculoskeletal degeneration following anterior cruciate ligament (ACL) injury.

A mixed-methods study of patient and healthcare professional perceptions of care pathways for knee osteoarthritis.

Background: This study aimed to address research gap concerning the perception of the care pathway for knee osteoarthritis (KOA) patients, focusing on both the patient and health professional perspectives in countries with inefficient health systems, such as Slovenia, by examining patient satisfaction with conservative treatment, assessing the perceptions of both patients and health professionals regarding the latter's involvement, and justifying the chosen KOA treatment approaches.

Methods: A mixed-methods approach was employed, combining quantitative surveys and qualitative interviews with KOA patients (n = 82) and healthcare professionals (n = 68).

Results: The care pathway for conservative KOA treatment in Slovenia begins with general practitioners (GPs), who conduct initial examinations, prescribe analgesics, and refer patients to radiologists and orthopaedic surgeons.

Periprosthetic Joint Infection and Concomitant Sepsis: Unveiling Clinical Manifestation, Risk Factors, and Patient Outcome.

Purpose: This study investigated the epidemiology, risk factors, and outcomes of sepsis, a life-threatening complication, in the context of periprosthetic joint infections (PJI) of the hip and knee.

Methods: Sepsis was determined using the Sepsis-1 criteria. The cohort with PJI and sepsis was compared to patients who had PJI without sepsis.

A morphology of the distal medial femoral surface that should be considered when performing coronal osteotomy in medial closed wedge distal femoral varus osteotomy.

Aims: The aim of the present study was to evaluate the morphology of the distal medial femoral surface during coronal osteotomy in medial closed wedge distal femoral varus osteotomy (MCWDFO) using plain CT.

Methods: Twenty knees (mean age, 55.3 years) were included.

Hyaluronic acid injections administered within two months prior to total knee arthroplasty increase the risk for periprosthetic joint infection.

Background: It remains unknown how timing of preoperative intra-articular knee hyaluronic acid (HA) injections impacts risk for developing postoperative periprosthetic joint infection (PJI) following total knee arthroplasty (TKA).

Methods: The PearlDiver Mariner database was utilized to identified patients undergoing primary TKA between 2015 and 2022 who received an HA injection without a corticosteroid injection within 12 months prior to surgery. The HA cohort was matched 1:1 to a control cohort undergoing no preoperative injections (corticosteroid or HA).

The impact of pathogen sensitivity to antibiotics loaded in cement on the number of revisions and costs in the treatment of periprosthetic knee infection.

Objective: This study aims to evaluate the impact of the pathogen's sensitivity to the loaded antibiotics on infection resolution, the number of revisions, and the associated costs in patients undergoing revision total knee arthroplasty (rTKA) due to PJI.

Material And Methods: We reviewed the treatment and follow-up processes of 61 patients who underwent rTKA for late-stage PJI following primary total knee arthroplasty in our clinic. The study included 11 patients in the resistant group and 50 in the sensitive group in line with the power analysis results.

Combined PCL and anatomic posterolateral corner reconstruction: A tibial slope under 8 degrees and a persisting dorsal instability of 4 mm or more have a negative effect on the clinical outcome.

Purpose: The failure rate following posterolateral corner reconstruction (PLC) remains high. Previous research indicates that in posterior cruciate ligament (PCL) reconstruction the laxity is affected by the tibial slope (TS). However, there is currently no literature evaluating the impact of TS on surgical outcome in combined reconstruction of PLC/PCL.

Selective retinoid X receptor agonism promotes functional recovery and myelin repair in experimental autoimmune encephalomyelitis.

Evidence that myelin repair is crucial for functional recovery in multiple sclerosis (MS) led to the identification of bexarotene (BXT). This clinically promising remyelinating agent activates multiple nuclear hormone receptor subtypes implicated in myelin repair. However, BXT produces unacceptable hyperlipidemia.

Acute systemic macrophage depletion in osteoarthritic mice alleviates pain-related behaviors and does not affect joint damage.

Background: Osteoarthritis (OA) is a painful degenerative joint disease and a leading source of years lived with disability globally due to inadequate treatment options. Neuroimmune interactions reportedly contribute to OA pain pathogenesis. Notably, in rodents, macrophages in the DRG are associated with onset of persistent OA pain.

Effect of traction therapy on muscle satellite cell proliferation and differentiation in a rat model of knee stiffness.

Background: In the rat knee stiffness model, the duration of traction treatment is mostly 20-40 min; however, relatively few studies have been conducted on longer traction treatment of extended knee stiffness in rats. Therefore, the aim of this study was to explore the efficacy of prolonged traction and its mechanism of action in extended knee stiffness in rats.

Methods: The model of extended knee joint stiffness was established in rats and treated with powered flexion position traction.

Evaluating functional outcomes and quality of life in musculoskeletal tumor patients with distal femoral megaprostheses: a case-control study.

Background: Endoprosthetic knee replacement using megaprostheses has become a common strategy for preserving joint function in patients with distal femur tumors. While existing literature has primarily focused on surgical techniques, complications, and implants, recent improvements in patient survival rates have sparked increased interest in the long-term functional outcomes associated with this treatment.

Methods: This case-control study evaluated functional outcomes-Timed Up and Go (TUG), 6-Minute Walk Test (6MWT), knee flexor and extensor muscle strength, and sagittal knee range of motion-and health-related quality of life (SF-36) between patients with distal femoral megaprostheses (n = 31) and healthy controls (n = 48).

Evaluating the Use of Dexamethasone in Diabetic Patients Undergoing Total Joint Arthroplasty: A Systematic Review and Meta-analysis.

Background: The American Association of Hip and Knee Surgeons (AAHKS) strongly recommends the use of dexamethasone in patients undergoing total joint arthroplasty (TJA) due to its therapeutic effects. However, use in diabetic patients is controversial due to safety. Therefore, the objective of this study was to determine safety: (1) calculating the post-operative glucose levels; (2) finding the ideal dexamethasone dosing regimen; and (3) reporting complications of dexamethasone administration in diabetic patients undergoing TJA.

Analysis of Synovial Fluid Aspirations in Aseptic Loosening and Instability After Total Knee Arthroplasty.

Introduction: Aseptic total knee arthroplasty (TKA) complications can be challenging to diagnose. Many studies have defined periprosthetic joint infection (PJI) using synovial aspirations, but few studies have described aspiration characteristics in aseptic TKA problems. The aim of this study was to determine the synovial fluid characteristics of patients who had TKA failure caused by two common aseptic diagnoses: aseptic loosening and instability.

Operative Fires: Variables Associated with Polymethylmethacrylate Flammability.

Background: Operative fires are rare but unforgettable events, with the potential for devastating outcomes. It is estimated that 650 operating room (OR) fires occur each year in the United States, with the use of electrocautery devices and polymethylmethacrylate (PMMA) as the primary ignition and fuel sources. There are several case reports of OR fires caused by PMMA and electrocautery in the literature, but, to our knowledge, no formal studies have been performed exposing the flammability of PMMA and how PMMA reacts to an electrocautery ignition source.

A Biomechanical Comparison Between Conventional, Sumo, and Hex-Bar Deadlifts Among Resistance Trained Women.

Gundersen, AH, van den Tillaar, R, Falch, HN, Fredriksen, AB, and Larsen, S. A biomechanical comparison between conventional, sumo, and hex-bar deadlifts among resistance trained women. J Strength Cond Res XX(X): 000-000, 2024-The deadlift is a multijoint exercise frequently used to strengthen the lower extremities and spinal erectors.

Current trends in the medial side of the knee: not only medial collateral ligament (MCL).

The medial collateral ligament (MCL) is by far the most commonly injured ligament of the knee. The medial ligament complex covers a broad bony surface on the extraarticular portion of the femur and is highly vascularized, which allows for a high healing potential. For this reason, most MCL complex lesions were treated conservatively in the past.

First case report of septic arthritis associated with an indwelling device.

usually presents with erythrasma, a macular rash, but rarely it can cause extracutaneous infections such as endocarditis, peritonitis, pyelonephritis, and catheter-related bloodstream infections. Here, we present the first case of septic arthritis caused by and a literature review of invasive infections. The diagnosis was confirmed by the patient's clinical findings and microbiological examination of the joint fluid.

Polymeric Microneedles for Transdermal Delivery of Human Placental Tissue for the Treatment of Osteoarthritis.

Biologics targeting matrix-degrading proteases, cartilage repair, and inflammation are emerging as promising approaches for osteoarthritis (OA) treatment. Recent research highlights biologic-human placental tissue (HPT) as a potential OA therapy due to its biocompatibility, abundant protein biofactors, and ability to reduce cartilage degradation by suppressing protease expression. Microneedles (MNs) are receiving growing attention for enhancing transdermal delivery of biologics as an alternative to conventional subcutaneous injections.

Morphology of the sternoclavicular joint and its microanatomical changes in response to osteoarthritic degeneration.

Although the sternoclavicular joint shares structural similarities with the knee and hip joints as a diarthrodial joint, its biomechanics differ significantly due to its non-weight-bearing nature. Nevertheless, it is subject to considerable loading, leading to increased susceptibility to osteoarthritis, a prevalent condition characterized by the degeneration of the joint's articular surfaces and fibrocartilaginous intra-articular disc. The osteoarthritic degeneration of the fibrocartilaginous and cartilaginous surfaces of the sternoclavicular joint has been investigated, considering multiple factors.

Injury prevention programmes (IPPs) for preventing anterior cruciate ligament injuries.

This is a protocol for a Cochrane Review (intervention). The objectives are as follows: To determine the benefits and harms of injury prevention programmes on anterior cruciate ligament injuries.

Platelet-rich plasma combined with isometric quadriceps contraction regulates autophagy in chondrocytes via the PI3K/AKT/mTOR pathway to promote cartilage repair in knee osteoarthritis.

Background: This study investigated the molecular mechanism by which the combination of platelet-rich plasma (PRP) and isometric contraction of the quadriceps (ICQ) intervention regulates autophagy in chondrocytes to prevent and treat knee osteoarthritis (KOA).

Methods: Thirty Sprague-Dawley rats were divided into a control group (CG, n = 6) and a model group (n = 24). After one week, the model group was randomly divided into a joint intervention group (JIG), a rapamycin group (RAG), an MHY1485 group (MYG), and a model blank group (MBG), with JIG, RAG, and MYG receiving the same combined intervention.

Clinical Value of Routine Follow-Up Radiographs in Total Joint Arthroplasty.

Background: Performing routine radiographs after total joint arthroplasty (TJA) in post-operative follow-up, typically at four weeks and 12 months, in addition to baseline radiographs obtained immediately post-operatively, is common practice in many institutions. Despite research indicating it may not alter management, it is associated with substantial financial, resource, and time costs. This study aimed to assess the impact of routine radiographs on the management of TJA patients in a UK district general hospital.

Comparative Analysis of the Therapeutic Potential of Extracellular Vesicles Secreted by Aged and Young Bone Marrow-Derived Mesenchymal Stem Cells in Osteoarthritis Pathogenesis.

Osteoarthritis (OA), a joint disease, burdens global healthcare due to aging and obesity. Recent studies show that extracellular vesicles (EVs) from bone marrow-derived mesenchymal stem cells (BMSCs) contribute to joint homeostasis and OA management. However, the impact of donor age on BMSC-derived EV efficacy remains underexplored.

'QuickDASH' to find unique genes and biological processes associated with shoulder osteoarthritis: a prospective case-control study.

Objective: Osteoarthritis (OA) is a disease impacting the synovial joint complex, yet transcriptional changes specific to shoulder OA remain underexplored. This study aims to profile transcriptomic changes in periarticular tissues from patients undergoing shoulder replacement for OA. By correlating these profiles with QuickDASH scores-a validated measure of worsening shoulder function-this research seeks to understand the gene expression changes associated with clinical decline.