Atomic-Scale Mapping and Quantification of Local Ruddlesden-Popper Phase Variations.

The Ruddlesden-Popper (ABO) compounds are highly tunable materials whose functional properties can be dramatically impacted by their structural phase . The negligible differences in formation energies for different can produce local structural variations arising from small stoichiometric deviations. Here, we present a Python analysis platform to detect, measure, and quantify the presence of different -phases based on atomic-resolution scanning transmission electron microscopy (STEM) images.

An articulating antibiotic spacer controls infection and improves pain and function in a degenerative septic hip.

Background: Treating septic arthritis of the hip with coexisting advanced degenerative disease is challenging. The use of primary total hip arthroplasty (THA) has led to postoperative infection rates as high as 22%. Insertion of antibiotic spacers with subsequent reimplantation of a THA controls infection and improves pain and function in patients with periprosthetic infections.