The Alpha Angle.

➢ The alpha angle was originally defined on magnetic resonance imaging (MRI) scans, using a plane, parallel to the axis of the femoral neck. However, much of the literature on the alpha angle has used radiographs or other imaging modalities to quantify the alpha angle.➢ The measurement of the alpha angle can be unreliable, particularly on radiographs and ultrasound.

An examination of social relations and concussion management via the blue card.

Introduction: Initially developed by New Zealand Rugby in 2014, the Blue Card initiative in rugby enables match officials to remove athletes from play if they are suspected to have sustained a concussion. Considerable attention has been paid by sport and health advocates to the possibilities and limitations of this initiative in safeguarding athlete health. However, little if any attention has been paid to the well-being of those responsible for administering the Blue Card (i.

A grounded theory of youth athlete concussion under-reporting decisions.

Background: Sport-related concussions leave youth vulnerable to significant health, physical, social, and educational disruptions. Many youth athletes under-report concussions, but the scope of the issue for this population is not well understood, nor are the underlying motivations for (under)reporting. It is necessary to examine the relationship between sport-related concussion knowledge and reporting and invite athletes to share their decision-making processes.

Subconcussive head impacts in sport: A systematic review of the evidence.

Purpose: To identify and evaluate the evidence that examines subconcussive impacts in sport-specific settings, and address two objectives: a) to determine how 'subconcussion' is characterized in the current literature, and b) to identify directions for future research.

Research Design: Systematic review.

Methods And Procedures: CINAHL, EMBASE, MedLine, PsycINFO, SportDiscus, and Web of Science were searched for articles that sought to assess subconcussive impacts or outcomes related to non-concussive head impact exposure.

Psychological Risk Factors and Outcomes of Dance Injury: A Systematic Review.

Historically, dance medicine and science has focused on the physical aspects rather than the psychological aspects of dance injury. Psychological variables, however, have been shown to influence the occurrence of injury and post-injury outcomes. The purpose of this review was to examine the dance psychology literature and determine the specific psychological factors reported to be associated with the incidence, frequency, and outcome of dance injuries.