LaMarcus Aldridge's latest bout with heart arrhythmia kept him out less than a week, a big relief to the five-time All-Star as he and the San Antonio Spurs chase the Golden State Warriors for the top seed in the Western Conference. Aldridge was cleared to return to full basketball activities and was expected to be in the lineup on Wednesday night against Portland with no restrictions, the Spurs announced. ''We are thankful that LaMarcus will be able to rejoin the team,'' Spurs GM RC Buford said in a statement issued by the team.