Packers quarterback Aaron Rodgers was named the NFC offensive player of the month for October. (US Presswire)

Packers WR Greg Jennings tweeted a picture of himself following his surgery Thursday in his hospital bed, hooked up to an IV, wearing a surgical cap and making a hideous face.

But the picture was no scare for Packers fans, as it came with the message "Surgery went well tweeps!! #begreat.” Jennings had undergone an outpatient procedure with a specialist in Philadelphia to repair his rectus abdominal tear, and apparently the operation, which was delayed two days because of Hurricane Sandy, was a success.

Coach Mike McCarthy confirmed Thursday that “the procedure went very well” and added that the medical staff told him “a couple weeks is probably going to be the minimum that he would be back.”

Jennings was injured on the Packers’ final offensive series in Week 1 against the 49ers. He tried to come back too early from what was believed to be a groin injury, but he aggravated it in Week 4 and has been on the shelf since. After a month, the two-time Pro Bowl wide receiver went to Philadelphia specialist William Meyers for a second opinion and, upon learning the nature and severity of the injury, scheduled surgery for this week.

Last week, Jennings said the operation would not be season-ending, although he didn’t want to provide a timetable for his return. The typical recovery time for his injury is three to six weeks.

Jennings, who’s in the last year of his contract with Green Bay, has 12 catches for 78 yards and a touchdown in three games.

When the injury report was read Thursday, Jennings was listed as having a “CMI.” At the end of his press conference, McCarthy needled reporters for not asking what that was.

 “CMI is a core muscle injury,” he said with a smirk, just before leaving. “So don’t act like you knew what a CMI was.”

Injury update: The Packers listed 13 players on their injury report Thursday. Jennings (groin/abdomen) and CB Charles Woodson (collarbone) are out. FB John Kuhn (hamstring), WR Jordy Nelson (hamstring), LB Nick Perry (knee), CB Sam Shields (ankle) and DE Jerel Worthy (concussion) did not participate in practice for the second straight day. TE Jermichael Finley (shoulder), G T.J. Lang (elbow/wrist) and DT B.J. Raji (ankle) and DE Mike Neal (ankle) were limited at practice. WR Donald Driver (neck/thumb) and QB Aaron Rodgers (calf) were full participants Thursday.

McCarthy said Nelson and Kuhn took part in rehab Thursday, are encouraged by their progress and will meet with a doctor and be re-evaluated Friday.

He said Perry and Shields are “doubtful” for Sunday against the Cardinals.

Depleted D-line: When Worthy and Neal were injured in last week’s win over the Jaguars, it further weakened a defensive line that was already hurting.

Raji and Neal were limited at practice Thursday. Raji played last week and said he felt good enough to play as much as he was needed Sunday. But if Neal and Worthy can’t go, the Packers would be left with just four healthy defensive linemen.

“Our injury situation obviously is stressed on the D-line,” McCarthy said. “If we have to go with four, we’ll go with four.”

That didn’t seem to bother DEs Ryan Pickett or C.J. Wilson. They insisted that having only four linemen active wouldn’t change any defensive packages, and Pickett said the only concern would be “we’ll be a little more tired.”

October awards: Two Packers players were honored Thursday with conference awards for their play in the month of October, when Green Bay went 3-1.

QB Rodgers was named the NFC offensive player of the month. Rodgers was 96 of 141 (68.1 percent) for 1,101 yards, 14 touchdowns and an interception for a 121.5 passer rating. He led the NFL in touchdown passes and was second in passer rating. He ranked second in the NFC in passing yards and completion percentage.

CB Casey Hayward was named the NFC defensive rookie of the month. Hayward tied for the NFL lead among all players in October with four interceptions, which all came in a three-game span and are tied for third-most in the NFL. He also had 13 tackles and five passes defensed.

Woodson donates for hurricane: CB Woodson is out with a collarbone injury, but that won’t stop him from writing a $100,000 check to the Red Cross to help families affected by Hurricane Sandy.

Woodson said Thursday during an appearance at a Democratic Party rally at Green Bay's Austin Straubel International Airport in advance of a campaign stop by President Obama that he was grateful for the sense of community he’s found in Green Bay and wants to help other communities that are in need.

Hurricane Sandy has caused an estimated $60 billion in damage along the East Coast.

In 2009, Woodson, the 1997 Heisman Trophy winner at Michigan, donated $2 million to the University of Michigan's C.S. Mott Children's Hospital.

Follow Packers reporter James Carlton on Twitter: @CBSPackers and @jimmycarlton88.