Friday night MRI will determine extent
Boston will have an MRI late Friday night to determine the severity of the injury, ESPN.com's Len Pasquarelli reports.
If the patella tendon is torn, it is typically a season-ending injury.
Dolphins' coach Dave Wannstedt said the initial diagnosis was a strained patellar tendon.
Preparing for a scrimmage Saturday against the Texans, Boston's left knee appeared to buckle from under him without contact. With his knee heavily wrapped, he was taken off the field on a cart.
Information from The Associated Press was used in this report.
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