Maurice Lucas, the bruising All-Star forward known as the Enforcer who helped lead the Portland Trail Blazers to their only N.B.A. championship, died Sunday at his home in Portland, Ore. He was 58.

His death was announced by the team. Lucas had surgery for bladder cancer in the spring of 2009 but was hospitalized that fall for a recurrence of cancer. He was an assistant coach for the Trail Blazers in recent years.

Lucas was a rugged defender and an outstanding rebounder, capable of a sturdy pick and a timely basket on offense. Possessing a glare that presumably intimidated many an opposing player, he became the prototype power forward when he emerged as a star for the Trail Blazers in the late 1970s.

“There’s nobody can contest him inside,” Bill Cartwright said when he played center alongside Lucas on the Knicks in the early 1980s. “Anybody tries, they’re going to be in a lot of trouble.”