Influence of Sex and Previous Concussion History on Postconcussive Recovery in Young Athletes.

Objective: To determine whether concussed female athletes with a previous history of concussion have longer postconcussive recovery than that of male counterparts.

Design: Retrospective cohort study.

Setting: Outpatient sports medicine clinic in an academic practice.

What Is the Optimal Criteria to Use for Detecting Periprosthetic Joint Infections Before Total Joint Arthroplasty?

Background: The purposes of this study were to (1) test the accuracy of α-defensin and combined α-defensin-aspiration cultures in diagnosing periprosthetic joint infection (PJI) before revision total knee and hip arthroplasty and (2) evaluate Musculoskeletal Infection Society (MSIS) criteria and α-defensin as predictors of successful reimplantation (second-stage) at 1 year after surgery.

Methods: We retrospectively evaluated a total of 97 synovial fluid aspirations performed between August 2014 and September 2016 before revision due to septic or aseptic failures (n = 70) or before second-stage (n = 27) joint arthroplasty. Revisions were categorized as either septic or aseptic according to the MSIS criteria.

Mild Traumatic Brain Injury in a High School Football Player With Familial Hemiplegic Migraine: A Case Report.

Unlabelled: Mild traumatic brain injury is a major concern in young athletes, with an estimated 1.6-3.8 million reported concussions in the United States annually.