Former Players Join Lawsuit Against the NHL

140 former hockey players are involved in a class-action complaint against the NHL while the family of former NHL star Steve Montador has also sued the league.
2:22 | 12/17/15

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Transcript for Former Players Join Lawsuit Against the NHL
Another case that could end up in court, the NFL, as you know in the spotlight for its concussion problems but football is not the only sport with crisis there. More hockey players are joining a lawsuit against the NHL. Now, ABC's linsey Davis is here, and linsey, a lot of parents with kids who play hockey are concerned about this. Reporter: You're right. There is heightened concern and comes as we're seeing an increase in the number of people playing hockey in this country. More than 500,000 people registered in the 2013/2014 season, that's more than ever before. With the movie "Concussion" making headlines, tackling the issue of brain injuries in the NFL -- Tell the truth. Reporter: -- The NHL is getting hit with concussion-related lawsuit, as well. Oh, a monster hit. Reporter: More hockey players joining a class action complaint against the league, approximately 140 former pros now alleging in a lawsuit filed in 2013 that the league didn't do enough to warn them of the long-term effects of repeated blows to the head or protect them from those hits. Reed Larson is part of the lawsuit. We knew we would separate shoulder, lose teeth but long-term brain trauma or cte was never brought up. Reporter: Just last week the family of Steve montador slapped them with its own lawsuit. Ten months after the 35-year-old was found dead inside his home, an autopsy concluded his brain was ravaged by the degenerative disease cte, his family claiming the league failed to warn him of the long-term neurological risks associated with repeated head trauma. When asked in may if he believes there's a connection between cte and hockey, the commissioner said from a medical science standpoint there is no evidence yet that one necessarily leads to the other. The NHL telling ABC news, we don't comment on pending litigation. U.s. Hockey has recently changed the body checking rules to 13 to 14 from 11 and 12. In the past they reported drops in participation at the age when body checking was introduced which suggests that minimally parents are concerned about their kids taking these hits. We do think about the parents and, you know, you want your child to participate at sports but when you have this, yeah, so they just want the knowledge to make the right decisions. To see if there is a connection. Linsey, thank you. A big medical headline for

This transcript has been automatically generated and may not be 100% accurate.

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