Watt suffered a tibial plateau fracture in Sunday night's loss to Kansas City and Mercilus was ruled out with a torn pectoral muscle.
Dr. Patrick McCulloch, an orthopedic surgeon for Houston Methodist Hospital, explained how big Watt's injury is.
RELATED: Watt fractures left tibia, Mercilus also injured in Texans loss to Chiefs
He also described Mercilus' pectoral tear.
'What can happen in football if you are trying to get around offensive lineman and your arm gets pulled back in this position," McCulloch said.
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