The Cardinals released a statement Friday saying arthroscopy on Berkman's right knee "found a partial tear in the medial meniscus, which was removed, and a ... cartilage tear, which was debrided."
Doctors did not find any damage to the anterior cruciate ligament, which Berkman had earlier said he feared would keep him sidelined for the rest of the season, the St. Louis Post-Dispatch reported.
The team said Berkman's recovery and rehabilitation is expected to take eight to 10 weeks.
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