Increasing seated reaction forces with lower body negative pressure.

This study evaluates ground reaction forces and cardiovascular responses during seated lower body negative pressure (LBNP). Ten healthy subjects were exposed to randomized LBNP levels (-10 to -40 mmHg) while seated in a sealed chamber. Gluteal, foot, and total reaction forces, along with heart rate and blood pressure, were measured at each level.

Evaluating the Efficacy of Trapezius Transfer in the Management of Massive Rotator Cuff Tears: A Systematic Review of Clinical Outcomes.

Background: Massive irreparable rotator cuff tears are a significant challenge for shoulder function, with tendon transfers emerging as potential solutions.

Objective: This systematic review aims to comprehensively evaluate the current evidence on the outcomes of lower trapezius transfer for the treatment of massive rotator cuff tears.

Methods: This systematic review examines the use of trapezius transfer in managing these tears.

Surgeon Preferences, Surgical Location, and Timing of Repair Drive Achilles Tendon Rupture Repair Cost.

Background: Midsubstance Achilles tendon repair is a common procedure, yet the factors influencing its cost have been underexamined and often imprecisely understood. Using time-driven activity-based costing (TDABC), we examined variation in total cost, compared patient-, surgeon-, and surgery-specific characteristics between high- and non-high-cost repairs, and assessed factors associated with total cost to identify specific cost drivers that might reduce expenses without compromising clinical outcomes.

Methods: Patients undergoing midsubstance Achilles tendon rupture repair between January 3, 2022 and December 28, 2023 at 2 academic medical centers and their affiliated community hospitals and ambulatory surgical centers were identified.

Applications for Biomechanical Taping and Kinesiotaping in Athletics.

Background: Kinesiology taping (KT) is a popular therapeutic modality used by athletes for sports performance enhancement. The objective of this presentation is to demonstrate appropriate KT techniques for a variety of pathologies among athletes.

Indications: KT can be used to enhance athletic performance by improving strength, range of motion, and proprioception.

Early complications and risk factors following reverse versus anatomic total shoulder arthroplasty for osteoarthritis: a nationwide registry study.

Background: Reverse shoulder arthroplasty (RSA) is an alternative to anatomic total shoulder arthroplasty (TSA) for treating glenohumeral osteoarthritis (OA), particularly in elderly patients. This study evaluates 90-day postoperative complication rates and identifies risk factors for adverse outcomes in RSA and TSA patients.

Methods: A retrospective cohort study was conducted using the TriNetX Research NLP Network to identify patients aged 65-90 years who underwent RSA or TSA for OA from 2006 to 2024.

Risk Factors and Incidence of 30-Day Readmission Following Outpatient Total Knee Arthroplasty.

Background: Reflecting advancements in surgical techniques and postoperative care, total knee arthroplasty (TKA) is being performed increasingly as an outpatient procedure. This study aimed to report the frequency and timing of unplanned readmission after outpatient TKA with updated data, identify risk factors for readmission after outpatient TKA, and identify common causes for readmission after outpatient TKA with a much larger cohort compared to previous studies.

Methods: This study retrospectively analyzed data from 31,347 patients who underwent outpatient TKAs between 2012 and 2021.

Self-Generated Lower Body Negative Pressure Exercise: A Low Power Countermeasure for Acute Space Missions.

Microgravity in spaceflight produces headward fluid shifts which probably contribute to Spaceflight-Associated Neuro-Ocular Syndrome (SANS). Developing new methods to mitigate these shifts is crucial for preventing SANS. One possible strategy is the use of self-generated lower body negative pressure (LBNP).

Cardiovascular, Lymphatic, and Ocular Health in Space.

Life on Earth has evolved continuously under Earth's 1 G force and the protection of the magnetosphere. Thus, astronauts exhibit maladaptive physiological responses during space travel. Exposure to harmful cosmic radiation and weightlessness are unique conditions to the deep-space environment responsible for several spaceflight-associated risks: visual impairment, immune dysfunction, and cancer due to cosmic radiation in astronauts.