Center Sam Bowie of the Portland Trail Blazers broke a bone in his left leg last night in Milwaukee when he fell with about three minutes to play during a 95-89 loss to the Bucks.

Portland team spokesman John White said X-rays at Milwaukee's Good Samaritan Medical Center indicated a fractured left tibia, the same bone Bowie broke as a sophomore at Kentucky. He missed two seasons there because of the injury.

"They're putting it in a cast. It's in good position, but it's a definite fracture," said Dr. Conrad Heinzelmann, medical adviser to the Bucks.

Asked how long Bowie would be out, Heinzelmann said: "I would guess a minimum of six weeks."

Bowie went down at 3:03 of the fourth period after a collision under Portland's basket with teammate Jerome Kersey. Bowie was carried off the court on a stretcher. White said Bowie would return to Portland to be checked by team physicians.

Bowie was averaging 12.4 points and 8.5 rebounds per game this season, his second in the NBA.

Guard Mike Glenn came off the bench to score six points in the final four minutes to lead the Bucks to victory.

Ricky Pierce led Milwaukee (26-13) with 21 points. Clyde Drexler led Portland (22-18) with 26. Celtics 115, Hawks 108

Larry Bird scored 29 points and Dennis Johnson and Kevin McHale had 24 each in Boston as the Celtics ended Atlanta's five-game winning streak.

The Celtics (27-8) built a 21-point lead late in the third period, then withstood an Atlanta charge in the final quarter in improving their home record to 16-1.

Dominique Wilkins led Atlanta (19-16) with 34 points. Clippers 125, Nets 120

Marques Johnson scored 10 of his 29 points in the fourth quarter in East Rutherford, N.J., as Los Angeles ended a five-game losing streak.

Darryl Dawkins led the Nets (23-15) with 27 points, Albert King had 24 and Mike Gminski 22. 76ers 113, Kings 102

Moses Malone scored 26 points and pulled down 17 rebounds and Charles Barkley had 21 points in Philadelphia as the 76ers won their 11th in 12 games and halted Sacramento's four-game winning streak.

Reggie Theus had 23 points and Mike Woodson 22 for the Kings (13-23). Mavericks 117, Suns 104

In Dallas, Rolando Blackman scored nine of his 25 points in the fourth quarter to help the Mavericks beat Phoenix after seeing a 23-point lead dwindle to seven.

Dallas (16-16) got 26 points from Mark Aguirre. Phoenix (12-21) was led by Bernard Thompson and Larry Nance with 17 each.

Alvan Adams scored 11 points to become the Suns' all-time leader with 12,061. Spurs 124, Warriors 97

Steve Johnson scored 21 points to lead seven San Antonio players in double figures against visiting Golden State.

Mike Mitchell had 17 points, rookie Alfredrick Hughes 16 and David Greenwood and Alvin Robertson 14 each for San Antonio.

Golden State was led by Purvis Short with 28 points. Golden State rookie Chris Mullin, who came into the game leading the NBA in foul shooting, missed five consecutive free throws late in the game, matching his season's total. Lakers 124, Pacers 102

Kareem Abdul-Jabbar scored 31 points and passed the 34,000-point plateau, leading Los Angeles over Indiana in Inglewood, Calif.

Abdul-Jabbar, in his 17th season, has 34,017 points.

Steve Stipanovich led Indiana with 18 points.