Wall underwent knee procedure before joining Team USA

Wall underwent knee procedure before joining Team USA
July 31, 2014, 4:45 pm
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(Brian Spurlock-USA TODAY Sports)

John Wall officially joined Team USA last week, less than 72 hours before the national team's training camp was to start. One report hinted that national team officials wanted the point guard on board weeks prior, but waited to make sure Wall was physically able. 

Turns out Wall underwent a noninvasive shockwave procedure earlier this summer on his left knee, a source confirmed to CSNwashington.com.

The procedure is considered therapeutic. CSN's Chris Miller reports via a source that the "shockwave" treatment was to "calm down tendinitis" in his left knee.

Wall missed the opening 33 games of the 2012-13 season with a stress injury in his left knee. This season he played all 93 games total; 82 regular season and 11 in the postseason.

While Wizards teammate Bradley Beal received invitations to join Team USA, Wall was not named to the initial 28-man roster earlier in the year or the 19-man squad on July 14. Eventually 12 players will head to Spain in late August to compete in the FIBA World Cup of Basketball.

Ten days later came news that Wall, who led the NBA in total assists this past season, had received his invitation. At the time, ESPN's Marc Stein reported the following:

Sources told ESPN.com that USAB has wanted Wall in camp for weeks and merely wanted to make sure that the Wizards' All-Star was able to play at full capacity after a longer-than-expected season before making it official.

Wall is obviously in Las Vegas with Team USA and apparently practicing without issue. Seeing as his five-year, $80 million contract extension starts this season, hard imagining the Wizards letting Wall play for Team USA if they had any concerns.

[RELATED: Wizards preseason schedule taking shape]