PHILADELPHIA (AP) _ Philadelphia 76ers center Todd MacCulloch retired Wednesday, ending an attempted comeback from foot problems that sidelined him the last 1 1/2 seasons.

MacCulloch, 28, hasn't played since February 2003 because of Charcot-Marie-Tooth disease, a genetic disorder that disrupts his balance.

MacCulloch had surgery in January on his left foot to free up a crushed nerve, leaving him hopeful of a recovery and perhaps a similar procedure on his right foot. Instead, there was no progress.

The 7-foot MacCulloch was Philadelphia's second-round pick in 1999. After two seasons with the Sixers, he signed with New Jersey, then was traded back to Philadelphia in 2002 along with Keith Van Horn in the deal that sent Dikembe Mutombo to the Nets.

He had his best season with the Nets in 2001-02 when they reached the NBA Finals. He averaged 9.7 points and 6.1 rebounds in 62 games.

MacCulloch averaged 6.1 points and four rebounds in 223 career games.

The Sixers kept a locker for MacCulloch last year and he did some radio announcing.