Vikings receiver Percy Harvin, who was to undergo arthroscopic surgery to remove bone spurs from his shoulder today, has postponed the procedure, he announced via Twitter this morning.

"To all my fans did not undergo surgery today had to put on back burner to support my family through emergency thanks," Harvin tweeted at @Percy_Harvin.

Harvin didn't elaborate on the nature of the family emergency. Nor did he say when the surgery will be rescheduled.

Harvin is still expected to be ready to participate in the Vikings' organized team activities (OTAs), which begin May 29. And, frankly, even if he's not able to run around in shorts on May 29, it won't be cause for alarm or affect his season in any way.

Harvin had a career-high 87 catches for 967 yards and six touchdowns in 2011. He also ran the ball 52 times for 345 yards and two touchdowns. With Adrian Peterson coming back from ACL surgery on his left knee in late December, Harvin most likely heads into training camp as the team's No. 1 offensive threat.

The shoulder bothered Harvin during the 2011 season, but it wasn't until it affected his offseason weight lifting that he opted to have the surgery.