Hesmer isn't the only member of the team to be out an extended period, as forward Tommy Heinemann could miss up to 12 months after knee surgery.
Hesmer, 30, is in his sixth season with the Crew and is the team's all-time leader in games played (130), wins (59), shutouts (41) and saves (412).
In Hesmer's place, Andy Gruenebaum has started all four of the Crew's matches in 2012 and looks set to take over the position for the remainder of the season. The 29 year-old has been with the team since 2006 and set his career-high in starts (10) in both 2007 and 2009.
Unfortunately for the Crew, Hesmer was not the only player to undergo micro-fracture surgery. Forward Tommy Heinemann had the procedure on his left knee and will require 9-12 months of rehabilitation.
Heinemann, who will turn 25 later this month, is in his fourth professional season and second with the Crew. After spending two years with Charleston and Carolina in the United Soccer League and NASL, he was signed by the Crew prior to last season and scored three goals and added an assist in 28 games (12 starts).
Follow GOAL.COM USA on