Bursal Acromial Resurfacing Improves Shoulder Biomechanics in a Cadaveric Model of Massive Rotator Cuff Tear.

Purpose: To investigate the effectiveness of bursal acromial resurfacing (acromiograft) on acromiohumeral distance, subacromial contact area, and pressure in a cadaveric model of massive rotator cuff tear.

Methods: Eight fresh-frozen cadaveric shoulders were tested using a customized shoulder testing system. Humeral head translation, subacromial contact pressure, and the subacromial contact area were evaluated across 4 conditions: (1) intact shoulder; (2) simulated massive rotator cuff tear, (3) 3-mm acromiograft condition, and (4) 6-mm acromiograft condition.

Editorial Commentary: Biceps Rerouting Augmentation Technique Restores Biomechanics, Improves Healing, and Has Many Advantages for Repair of Large and Massive Rotator Cuff Tears.

The biceps rerouting (BR) augmentation technique has emerged as a useful option for the repair of rotator cuff tears when the torn tendon does not cover the footprint or can only be reduced under excessive tension. BR offers several advantages over traditional methods. It is an all-inside joint procedure, eliminating the need for skin incisions other than those for the arthroscopic portal, thus reducing operative time and infection risk.

Does timing influence rehabilitation outcomes in arthroscopic rotator cuff repair with biceps rerouting? a prospective randomized study.

Background: Arthroscopic rotator cuff repair with biceps rerouting (ABR) has emerged as a reliable option for treating large posterosuperior rotator cuff tears (RCTs). This study aims to compare functional and structural outcomes of early vs. delayed motion rehabilitation protocols following ABR.

The Arthroscopic Biceps Rerouting Technique Shows Better Early Clinical Outcomes within 1 Year Than Partial Repair in Large to Massive Rotator Cuff Tears.

: The arthroscopic biceps rerouting (BR) technique was introduced as a novel technique for large-to-massive rotator cuff tears (LMRCTs). This method can restore shoulder stability, and its biomechanical effect was verified in a cadaver experiment. Recent reports have shown favorable clinical outcomes.

Varus-valgus alignment of humeral short stem in reverse total shoulder arthroplasty: does it really matter?

Background: The utilization of short humeral stems in reverse total shoulder arthroplasty has gained attention in recent times. However, concerns regarding the risk of misalignment during implant insertion are associated with their use.

Methods: Eight fresh-frozen cadaveric shoulders were prepared for dissection and biomechanical testing.

Trimetallic Oxide Electrocatalyst for Enhanced Redox Activity in Zinc-Air Batteries Evaluated by In Situ Analysis.

Researchers are investigating innovative composite materials for renewable energy and energy storage systems. The major goals of this studies are i) to develop a low-cost and stable trimetallic oxide catalyst and ii) to change the electrical environment of the active sites through site-selective Mo substitution. The effect of Mo on NiCoMoO is elucidated using both in situ X-ray absorption spectroscopy and X-ray diffraction analysis.

Prediction of Retear After Arthroscopic Rotator Cuff Repair Based on Intraoperative Arthroscopic Images Using Deep Learning.

Background: It is challenging to predict retear after arthroscopic rotator cuff repair (ARCR). The usefulness of arthroscopic intraoperative images as predictors of the ARCR prognosis has not been analyzed.

Purpose: To evaluate the usefulness of arthroscopic images for the prediction of retear after ARCR using deep learning (DL) algorithms.

Outcome of intraoperative injection of collagen in arthroscopic repair of full-thickness rotator cuff tear: a retrospective cohort study.

Background: Rotator cuff (RC) pathologies are considered the most common cause of shoulder disability and pain. Arthroscopic repair of RC tears has proven to be an effective operation. Nonhealing and retear remain significant clinical problems and a challenge to surgeons.

Comparison of Clinical Performance of Inlay versus Onlay Humerus Implants in Reverse Total Shoulder Arthroplasty.

Background: Reverse total shoulder arthroplasty (RTSA) has become the treatment of choice for the management of massive rotator cuff tears combined with cuff tear arthropathy, and many novel designs have been proposed to overcome the shortcomings of classic RTSA. This study sought to evaluate and compare RTSA outcomes among patients with cuff tear arthropathy treated by a medialized inlay humerus implant with a neck shaft angle of 155° or a lateralized onlay implant with a neck shaft angle of 145°.

Methods: A retrospective review of 32 inlay implants and 32 onlay implants was performed.

Increase in range of motion after intra-articular injection of triamcinolone acetonide for the treatment of frozen shoulder is related to body mass index.

Objectives: The aim of this study was to evaluate the clinical effect of glenohumeral injection with triamcinolone acetonide for frozen shoulder and to identify the factors related to extent of range of motion (ROM) recovery.

Patients And Methods: Between July 2015 and May 2020, a total of 305 patients with primary frozen shoulder (147 males, 158 females; mean age: 55.8±4.

Arthroscopic Acromiograft for Large-to-Massive Rotator Cuff Tears: A Rescue Technique for Restoring Shoulder Stability.

A large-to-massive rotator cuff tear is a complicated disease for an orthopedic surgeon to get the best results and prevent complications like retears or progression to arthropathy. Although there are several surgical options for managing these tears, there is still no gold standard treatment. The key point in the solution would be preventing the upward migration of the humeral head to create a biomechanically stable joint to promote rotator cuff healing.

Low Transcondylar Fractures of the Distal Humerus: A Multicenter Cohort Study.

Objectives: To determine the demographic characteristics and clinical and radiologic results of low transcondylar fractures and compare them with those of other types of distal humerus fractures using multicenter data and to suggest an optimal method for their treatment.

Design: Retrospective cohort study.

Setting: Tertiary-care university hospital.

Is There a Difference between Perineural Dexamethasone with Single-Shot Interscalene Block (SSIB) and Interscalene Indwelling Catheter Analgesia (IICA) for Early Pain after Arthroscopic Rotator Cuff Repair? A Pilot Study.

Interscalene block is applied to control acute postoperative pain after arthroscopic rotator cuff repair (ARCR), typically with single-shot interscalene block (SSIB) or continuous interscalene indwelling catheter analgesia (IICA), and dexamethasone (Dex) for extending the analgesic effect. This study investigated whether perineural Dex can extend the postoperative analgesic effect of SSIB to match that of IICA. A total of 130 patients were recruited and divided into two groups (Group D, SSIB with perineural Dex, = 94; Group C, IICA, = 36).

Kinetics of Glycoprotein-Specific Antibody Response in Patients with Severe Fever with Thrombocytopenia Syndrome.

Severe fever with thrombocytopenia syndrome (SFTS) is an emerging tickborne disease in East Asia that is causing high mortality. The Gn glycoprotein of the SFTS virus (SFTSV) has been considered to be an essential target for virus neutralization. However, data on anti-Gn glycoprotein antibody kinetics are limited.

Comparison of Lateralized Versus Medialized Reverse Total Shoulder Arthroplasty: A Systematic Review and Meta-analysis.

Background: Reverse total shoulder arthroplasty (rTSA) is an established procedure for cuff tear arthropathy. More lateralized prostheses have been designed to overcome the reported adverse outcomes of Grammont-style rTSA.

Purpose: To compare the clinical and radiological outcomes of medialized and lateralized center of rotation (COR) in rTSA.

Viral and Immunologic Factors Associated with Fatal Outcome of Patients with Severe Fever with Thrombocytopenia Syndrome in Korea.

Significant progress has been made on the molecular biology of the severe fever with thrombopenia virus (SFTSV); however, many parts of the pathophysiological mechanisms of mortality in SFTS remain unclear. In this study, we investigated virologic and immunologic factors for fatal outcomes of patients with SFTS. We prospectively enrolled SFTS patients admitted from July 2015 to October 2020.

Treatment With Glycogen Synthase Kinase 3β Inhibitor Decreases Apoptotic and Autophagic Reactions in Rat Rotator Cuff Tears.

Background: Apoptosis and autophagy are known to be correlated with the extent of damage in torn rotator cuffs, and there is no biological evidence for self-recovery or healing of the rotator cuff tear.

Purpose: To establish in a rat model of partial- and full-thickness rotator cuff tears how a glycogen synthase kinase 3β (GSK-3β) inhibitor affects the expression of apoptotic and autophagic markers.

Study Design: Controlled laboratory study.

Comparison of Gene Expression of Inflammation- and Fibrosis-Related Factors Between the Anterior and Posterior Capsule in Patients With Rotator Cuff Tear and Shoulder Stiffness.

Background: Arthroscopic capsular release is an effective treatment for refractory shoulder stiffness, yet there are no basic studies that can explain the extent of the release.

Purpose: This study aimed to compare the genetic expression of inflammation- and fibrosis-related factors between the anterior and posterior capsules in patients with shoulder stiffness and rotator cuff tear.

Study Design: Descriptive laboratory study.

Risk Factors for Mortality in Patients with Carbapenemase-producing and bacteremia.

Background: carbapenemase (KPC)-producing Enterobacterales bacteremia is associated with significant mortality; however, no optimal antibiotic strategy is available. We aimed to evaluate the clinical outcomes according to the antibiotic regimens and identify risk factors for mortality in patients with KPC-producing and bacteremia.

Materials And Methods: This retrospective cohort study included all adult patients with monomicrobial bacteremia (KPC-producing or ) between January 2011 and March 2021 at a 2,700-bed tertiary center.

The time of postoperative corticosteroid injection can be individualized after arthroscopic rotator cuff repair.

Background: Intra-articular corticosteroid injection is an effective treatment for pain and to improve the range of motion (ROM) of the shoulder joint. However, consideration of when it would be effective to inject corticosteroids after rotator cuff repair is more limited. The purpose of this study was to compare the outcomes of corticosteroids injection given at 4 and 8 weeks after arthroscopic rotator cuff repair.

Rotator cuff tear with joint stiffness: a review of current treatment and rehabilitation.

Repair of the rotator cuff tear is a joint-tightening procedure that can worsen joint stiffness. This paradoxical phenomenon complicates treatment of rotator cuff tear with joint stiffness. As a result, there is controversy about how and when to treat joint stiffness.

The effectiveness of ramosetron and ondansetron for preventing postoperative nausea and vomiting after arthroscopic rotator cuff repair: a randomized controlled trial.

Background: Arthroscopic rotator cuff repair is a painful procedure, and treatment of emetic events associated with drugs used in the current multimodal pain management remains challenging. This study aimed to evaluate the effectiveness of ramosetron or ondansetron to relieve postoperative nausea and vomiting (PONV) and pain after arthroscopic rotator cuff repair.

Methods: In total, 122 consecutive patients undergoing arthroscopic rotator cuff repair were randomly allocated into three groups: ramosetron group (n = 39), ondansetron group (n = 43), and control group (n = 40).

Estimating Quality of Reaching Movement Using a Wrist-Worn Inertial Sensor.

Stroke is a major cause of long-term disability. Because patients recovering from stroke often perform differently in clinical settings than in their naturalistic environments, remote monitoring of motor performance is needed to evaluate the true impact of prescribed therapies. Wearable sensors have been considered as a technical solution to this problem, but most existing systems focus on measuring the amount of movement without considering the quality of movement.