Onlay versus Inlay humeral steam in Reverse Shoulder Arthroplasty (RSA): clinical and biomechanical study.

Background And Aim Of The Work: Reverse shoulder arthroplasty (RSA) is becoming treatment of choice in glenohumeral arthropathies with massive lesion of the rotator cuff, due to a gradual extension of indications and new designs that provide better outcome. In this study we compared two different reverse shoulder prosthesis designs, defined as Inlay (or typical Grammont type) and a relatively new model defined as Onlay (that preserves tuberosity bone stock). We analyzed clinical, biomechanical and radiological outcomes, as well as complications of RSA in these two groups.

Rotator cuff tears reparability index based on pre-operative MRI: our experience.

Background And Aim Of The Work: It is recognised that a significant percetage of large and massive rotator cuff tears (RCT) cannot be anatomically repaired and this correlates with a worste outcome in terms of pain, active range of motion, increased incidence of retair. The aim of our work is to find reliable index on preoperative MRI shoulder image to assist orthopaedist in surgical planning of rotatator cuff tears repair.

Methods: We performed a retrospective study on a population on 131 patients undergoing arthroscopic cuff repair by a single expert surgeon.

Teaching metabolism with scientific articles: A new approach.

Scientific articles have been explored as a didactic resource in the teaching of Biochemistry, as well as in other areas of science. This teaching strategy contributes to the learning and understanding of specific concepts, and development of the skills, necessary for the research training of students. The present study investigated the use of scientific articles in the Topics in Metabolism course, which was offered to Biochemistry graduate students, at the University of São Paulo.