Long-term impact of scapular notching after reverse shoulder arthroplasty.

Background: Because it medializes the centre of rotation, one of the drawbacks of reverse shoulder arthroplasty (RSA) is the risk of impingement between the humerus and lateral border of the scapula resulting in scapular notching. The long-term impact of this notching is not well known, either on function or the risk of glenoid loosening. The aim of this longitudinal study was to analyze the drawbacks of this notching.

Functional outcomes after non-operative treatment of irreparable massive rotator cuff tears: Prospective multicenter study in 68 patients.

Background: Massive rotator cuff tears (RCTs) account for 10% to 40% of all RCTs and over 80% of re-tears. The objectives of this prospective study were to assess functional outcomes 6 and 12 months after starting non-operative therapy for an irreparable massive RCT and to identify predictors of good outcomes of non-operative treatment.

Hypothesis: Non-operative treatment deserves to be tried because it can produce improvements in patients with irreparable massive RCTs.

Radiocarpal dislocations and fracture-dislocations: Injury types and long-term outcomes.

Introduction: Radiocarpal dislocation (RCD) and fracture-dislocations (RCFD) are severe but rare injuries for which the treatment and outcomes are not well defined. The aim of this retrospective study was to describe the prevalence of the various injury types and their long-term outcomes.

Patients And Methods: Between 1992 and 2014, 41 patients with RCFD were seen at our institution.

Shoulder patient-specific guide: First experience in 10 patients indicates room for improvement.

Background: Implantation of the glenoid component of a total shoulder prosthesis can be facilitated by using a patient-specific guide (PSG) designed to ensure replication of the preoperatively planned position. The objective of this study was to assess the reliability and accuracy of a PSG in replicating the planned glenoid component position during total shoulder arthroplasty (TSA).

Hypothesis: Additional criteria should be used for 3D preoperative planning and PSG design to further improve the accuracy of glenoid component positioning.

Sleep duration, quality of life and depression in adolescents: a school-based survey.

Background: The main objective of this study was to assess the link between sleep duration, quality of life and depression in adolescents. The secondary objective was to study the sleeping behavior of a large sample of adolescents from different socioeconomic backgrounds.

Methods: Study subjects were high school students studying in or around Paris with a general, vocational or technological training background.