Strange Metals from Melting Correlated Insulators in Twisted Bilayer Graphene.

Even as the understanding of the mechanism behind correlated insulating states in magic-angle twisted bilayer graphene converges toward various kinds of spontaneous symmetry breaking, the metallic "normal state" above the insulating transition temperature remains mysterious, with its excessively high entropy and linear-in-temperature resistivity. In this Letter, we focus on the effects of fluctuations of the order parameters describing correlated insulating states at integer fillings of the low-energy flat bands on charge transport. Motivated by the observation of heterogeneity in the order-parameter landscape at zero magnetic field in certain samples, we conjecture the existence of frustrating extended-range interactions in an effective Ising model of the order parameters on a triangular lattice.

Efficacy of intercostal cryoneurolysis as an analgesic adjunct for chest wall pain after surgery or trauma: systematic review.

Background: There is a critical need for non-narcotic analgesic adjuncts in the treatment of thoracic pain. We evaluated the efficacy of intercostal cryoneurolysis as an analgesic adjunct for chest wall pain, specifically addressing the applicability of intercostal cryoneurolysis for pain control after chest wall trauma.

Methods: A systematic review was performed through searches of PubMed, EMBASE, and the Cochrane Library.

Linear resistivity and Sachdev-Ye-Kitaev (SYK) spin liquid behavior in a quantum critical metal with spin-1/2 fermions.

"Strange metals" with resistivity depending linearly on temperature T down to low T have been a long-standing puzzle in condensed matter physics. Here, we consider a lattice model of itinerant spin-[Formula: see text] fermions interacting via onsite Hubbard interaction and random infinite-ranged spin-spin interaction. We show that the quantum critical point associated with the melting of the spin-glass phase by charge fluctuations displays non-Fermi liquid behavior, with local spin dynamics identical to that of the Sachdev-Ye-Kitaev family of models.

Placement of Surgical Feeding Tubes Among Patients With Severe Traumatic Brain Injury Requiring Exploratory Abdominal Surgery : Better Early Than Late.

Objectives: The purpose of this study was to identify trauma patients who would benefit from surgical placement of an enteral feeding tube during their index abdominal trauma operation.

Methods: We performed a retrospective analysis of all patients admitted to 2 level I trauma centers between January 2013 and February 2018 requiring urgent exploratory abdominal surgery.

Results: Six-hundred and one patients required exploratory abdominal surgery within 24 hours of admission after trauma activation.

Robust Increase in Supply by Vessel Dilation in Globally Coupled Microvasculature.

Neuronal activity induces changes in blood flow by locally dilating vessels in the brain microvasculature. How can the local dilation of a single vessel increase flow-based metabolite supply, given that flows are globally coupled within microvasculature? Solving the supply dynamics for rat brain microvasculature, we find one parameter regime to dominate physiologically. This regime allows for robust increase in supply independent of the position in the network, which we explain analytically.

Tuberculosis and the Acute Abdomen: An Evaluation of the National Inpatient Sample.

Tuberculosis can cause acute abdominal pathology requiring operation. While most cases of tuberculosis resolve with appropriate anti-mycobacterial therapy, a surgical procedure still may be required. We sought to describe the modern epidemiology of acute abdominal pathology associated with tuberculosis in the United States.

First Reported Case of Intussusception Caused by Escherichia coli O157:H7 in an Adult: Literature Review and Case Report.

Background: Intussusception is the process by which one segment of intestine "telescopes" into another segment. Escherichia coli O157:H7 is a rare cause of intussusception that uncommonly requires a surgical procedure.

Methods: Case report and literature review.

Evaluation of the Trends, Concomitant Procedures, and Complications With Open and Arthroscopic Rotator Cuff Repairs in the Medicare Population.

Background: Medicare insures the largest population of patients at risk for rotator cuff tears in the United States.

Purpose: To evaluate the trends in incidence, concomitant procedures, and complications with open and arthroscopic rotator cuff repairs in Medicare patients.

Study Design: Cohort study; Level of evidence, 3.

C5 Palsy After Cervical Spine Surgery: A Multicenter Retrospective Review of 59 Cases.

Study Design: A multicenter, retrospective review of C5 palsy after cervical spine surgery.

Objective: Postoperative C5 palsy is a known complication of cervical decompressive spinal surgery. The goal of this study was to review the incidence, patient characteristics, and outcome of C5 palsy in patients undergoing cervical spine surgery.

Intraoperative Death During Cervical Spinal Surgery: A Retrospective Multicenter Study.

Study Design: A retrospective multicenter study.

Objective: Routine cervical spine surgeries are typically associated with low complication rates, but serious complications can occur. Intraoperative death is a very rare complication and there is no literature on its incidence.

Epidural Hematoma Following Cervical Spine Surgery.

Study Design: A multicentered retrospective case series.

Objective: To determine the incidence and circumstances surrounding the development of a symptomatic postoperative epidural hematoma in the cervical spine.

Methods: Patients who underwent cervical spine surgery between January 1, 2005, and December 31, 2011, at 23 institutions were reviewed, and all patients who developed an epidural hematoma were identified.

Perivascular Stem Cells Diminish Muscle Atrophy Following Massive Rotator Cuff Tears in a Small Animal Model.

Background: Rotator cuff tears are a common cause of shoulder pain and often necessitate operative repair. Muscle atrophy, fibrosis, and fatty infiltration can develop after rotator cuff tears, which may compromise surgical outcomes. This study investigated the regenerative potential of 2 human adipose-derived progenitor cell lineages in a murine model of massive rotator cuff tears.

Targeted Inhibition of Snail Activity in Breast Cancer Cells by Using a Co(III) -Ebox Conjugate.

The transition from a non-invasive to an invasive phenotype is an essential step in tumor metastasis. The Snail family of transcription factors (TFs) is known to play a significant role in this transition. These TFs are zinc fingers that bind to the CAGGTG Ebox consensus sequence.

Arthroscopic double-bundle anterior cruciate ligament reconstruction: an anatomic approach.

The anterior cruciate ligament consists of 2 functional bundles, the anteromedial and the posterolateral bundle. Anterior cruciate ligament reconstruction has traditionally focused on recreating the anteromedial bundle, while the reconstruction of the posteromedial bundle has not routinely been addressed. The authors, from 2 academic centers, present a technique of arthroscopic anterior cruciate ligament reconstruction that restores both the anteromedial and the posterolateral bundle using either semitendinosus and gracilis autografts or tibialis anterior allografts.

Surgical management of knee dislocations. Surgical technique.

Background: The evaluation and management of knee dislocations remain variable and controversial. The purpose of this study was to describe our method of surgical treatment of knee dislocations with use of a standardized protocol and to report the clinical results.

Methods: Forty-seven consecutive patients presented with an occult (reduced) or grossly dislocated knee.

The acutely dislocated knee: evaluation and management.

Acute knee dislocations are uncommon orthopaedic injuries. Because they often spontaneously reduce before initial evaluation, the true incidence is unknown. Dislocation involves injury to multiple ligaments of the knee, resulting in multidirectional instability.