Table of contents

Editorials

• First concussion did not increase the risk of subsequent concussion when patients were managed appropriately (16 April, 2018)

  Ian Shrier, Alexendre Piché, Russell J Steele
• Potential hamstring injury blind spot: we need to raise awareness of proximal hamstring tendon avulsion injuries (2 November, 2018)

  Anne D van der Made, Johannes L Tol, Gustaaf Reurink, Rolf W Peters, Gino M Kerkhoffs
• The Lancet series on low back pain: reflections and clinical implications (31 August, 2018)

  Kieran O’Sullivan, Peter B O’Sullivan, Mary O’Keeffe
• In pursuit of the ‘Unbreakable’ Athlete: what is the role of moderating factors and circular causation? (13 November, 2018)

  Tim J Gabbett, Rasmus Oestergaard Nielsen, Michael Lejbach Bertelsen, Natália Franco Netto Bittencourt, Sérgio T Fonseca, Shane Malone, Merete Møller, Eric Oetter, Evert Verhagen, Johann Windt
• Are prevalence measures better than incidence measures in sports injury research? (13 October, 2017)

  Rasmus Oestergaard Nielsen, Katrin Debes-Kristensen, Adam Hulme, Michael Lejbach Bertelsen, Merete Møller, Erik Thorlund Parner, Mohammad Ali Mansournia
• Distinguishing between causal and non-causal associations: implications for sports medicine clinicians (21 November, 2017)

  Steven D Stovitz, Evert Verhagen, Ian Shrier
• Was it a good idea to combine the studies? Why clinicians should care about heterogeneity when making decisions based on systematic reviews (25 July, 2018)

  Hege Grindem, Mohammad Ali Mansournia, Britt Elin Øiestad, Clare L Ardern