Basic Hip Arthroscopy Part 2: Central Compartment Arthroscopy (Interportal Capsulotomy, Acetabuloplasty, and Labral Repair).

Over the past decade, hip-preservation strategies have gained momentum, resulting in a notable increase in the use of hip arthroscopy for diagnostic and therapeutic interventions in hip-related pathology. In this 3-part series, the authors will aim to comprehensively review the fundamentals of hip arthroscopy in the setting of femoroacetabular impingement. This Technical Note will thoroughly review the senior authors' approach to managing the central compartment of the hip in the context of femoroacetabular impingement.

Selective Reduction of Esters to Access Aldehydes Using Fiddler Crab-Type Boranes.

The partial reduction of esters to aldehydes is a fundamentally important transformation for the synthesis of numerous fine chemicals and consumer goods. However, despite the many efforts, limitations have persisted, such as competing overreduction, low reproducibility, use of exigent reaction conditions and hazardous chemicals. Here, we report a novel catalyst family with a unique steric design which promotes the catalytic partial reduction of esters with unprecedented, near-perfect selectivity and efficiency.

Routes of importation and spatial dynamics of SARS-CoV-2 variants during localized interventions in Chile.

Human mobility is strongly associated with the spread of SARS-CoV-2 via air travel on an international scale and with population mixing and the number of people moving between locations on a local scale. However, these conclusions are drawn mostly from observations in the context of the global north where international and domestic connectivity is heavily influenced by the air travel network; scenarios where land-based mobility can also dominate viral spread remain understudied. Furthermore, research on the effects of nonpharmaceutical interventions (NPIs) has mostly focused on national- or regional-scale implementations, leaving gaps in our understanding of the potential benefits of implementing NPIs at higher granularity.

Diagnosis and Treatment Strategies of Meniscus Root Tears: A Scoping Review.

Background: Meniscus root tears comprise 10% to 21% of all meniscal tears. These tears alter knee biomechanics, elevating contact pressure, akin to a meniscectomy. Consequently, they are linked to advanced joint degeneration and cartilage damage in the affected compartment.

Comparing Severity of Knee Arthritis at an Urban Center by Insurance Type Prior to Total Knee Arthroplasty.

This study compares radiographic osteoarthritis severity prior with total knee arthroplasty (TKA) by payer type. Five hundred and three primary TKAs were included. Preoperative radiographs were scored by Ahlback, Kellgren-Lawrence (KL), and International Knee Documentation Committee (IKDC) classifications.