Rugby-Concussion worries cast shadow in World Cup year

By Justin Palmer LONDON, March 27 (Reuters) - Rugby officials, fans and television executives revelled in a thrilling Six Nations championship finale but concerns surrounding concussion and its long-term impact on players continue to cast a shadow over the game. The sight of England fullback Mike Brown lying unconscious after a sickening blow to the head or the controversy that surrounded Wales winger George North being allowed to play on after appearing to be knocked out has re-ignited the concussion debate in a sport with bigger, faster players than ever before. Head injuries have long been a concern in America's National Football League, highlighted again this month when Chris Borland, a 24-year-old linebacker with the San Francisco 49ers, announced his retirement. A lawsuit brought by thousands of former NFL players, which is awaiting judicial approval, is expected to cost the league in around $1 billion and there are fears rugby union could follow down the litigation route.



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