Technique for Grafting Preexisting Bone Tunnels During the First Stage of Revision Anterior Cruciate Ligament Reconstruction.

The incidence of revision anterior cruciate ligament reconstruction is increasing. Anticipated convergence of malpositioned tunnels, significant graft tunnel widening, and bone loss are all indications for performing a 2-staged revision reconstruction. The goal of this Technical Note is to describe a simple bone-grafting technique for placing allograft bone matrix into femoral and tibial bone tunnels during the first stage of a 2-stage revision anterior cruciate ligament reconstruction.

Lithography-Defined Semiconductor Moirés with Anomalous In-Gap Quantum Hall States.

Quantum materials and phenomena have attracted great interest for their potential applications in next-generation microelectronics and quantum-information technologies. In one especially interesting class of quantum materials, moiré superlattices (MSLs) formed by twisted bilayers of 2D materials, a wide range of novel phenomena are observed. However, there exist daunting challenges such as reproducibility and scalability of utilizing 2D MSLs for microelectronics and quantum technologies due to their exfoliate-tear-stack method.

Growth modulation increases clinical success in vertebral body tethering.

Purpose: The relationship between skeletal maturity and postoperative growth modulation (GM) in patients treated with Vertebral Body Tethering (VBT) is poorly understood. We aimed to: (1) identify preoperative skeletal maturity factors associated with GM, and (2) assess the relationship between GM and postoperative success in patients treated with VBT.

Methods: We retrospectively reviewed radiographic data from 55 patients with a minimum follow-up of 2 years (2.

Anterior Vertebral Body Tethering: A Single-Center Cohort with 4.3 to 7.4 Years of Follow-up.

Background: Vertebral body tethering (VBT) is a well-recognized, non-fusion alternative for idiopathic scoliosis in children with growth remaining. To date, there have been almost no published outcome studies with postoperative follow-up of >2 years. We aimed to fill this gap by evaluating mid-term outcomes in our first 31 consecutive patients.

Charge transport spectra in superconductor-InAs/GaSb-superconductor heterostructures.

Charge transport physics in InAs/GaSb bi-layer systems has recently attracted attention for the experimental search for two-dimensional topological superconducting states in solids. Here we report measurement of charge transport spectra of nano devices consisting of an InAs/GaSb quantum well sandwiched by tantalum superconductors. We explore the current-voltage relation as a function of the charge-carrier density in the quantum well controlled by a gate voltage and an external magnetic field.