'It's All Downhill from Here': A Scoping Review of Sports-Related Concussion (SRC) Protocols in Downhill Mountain Biking (DHI), with Recommendations for SRC Policy in Professional DMB.

Introduction: Downhill mountain biking (DHI) is a form of cycling and does not currently have a specific sports-related concussion (SRC) assessment.

Objective: To review the extent, range and nature of research investigating SRC in DMB, provide a summary of key literature findings relating to its identification and management, and then develop a SRC protocol specific to DMB.

Design: Scoping review as per recognised methods.

Video review of the frequency and assessment of head impacts during the FIFA Arab Cup 2021.

We used injury spotters and video footage review to establish the frequency of head impacts, their characteristics, and the subsequent medical assessment during the FIFA Arab Cup 2021. Six defined video signs of potential concussion based on an international consensus were used. A total of 88 head impacts were observed, with a median of 2 (IQR 1.

Simultaneous bilateral avulsion fractures of the anterior superior iliac spines in an adolescent sprinter.

A 16-year-old boy presented to the emergency department with sudden onset of bilateral hip pain while performing in a 100 m sprint race. Examination revealed diffuse swelling and tenderness at both anterior superior iliac spines (ASIS). Pelvic x ray revealed bilateral displaced avulsion fractures of the ASIS at the origin of the sartorius muscle.

Spontaneous tension pneumopericardium.

A 29-year-old man presented to the accident and emergency department complaining of a sudden onset of chest and upper abdominal pain. He had a past history of intravenous drug abuse and a previous stab wound to the left hypochondrium that had required laparotomy. On arrival he was distressed with grunting respiration.

Uvulitis and partial upper airway obstruction following cannabis inhalation.

The use of cannabis in our society is a common problem and the subject of much medical and political debate. We present a case in which a 17-year-old male regular cannabis user developed a large swollen uvula (uvulitis) and partial upper airway obstruction after smoking cannabis. Symptoms resolved with the administration of corticosteroids and antihistamines.