Loris Karius suffered a concussion in Liverpool’s Champions League final defeat.
Karius was criticised for his part in two of the goals conceded as the Reds slumped to a 3-1 defeat to reigning holders Real Madrid in Kiev on May 26.
The goalkeeper suffered a blow to the head in a collision with Real captain Sergio Ramos just minutes before conceding his side’s first goal.
He travelled to Massachusetts General Hospital for assessment in the days following the game in the Ukrainian capital.
Doctors at the Boston hospital, where Karius continues to undergo treatment, confirmed on Monday the full extent of the German international’s injury.
“After carefully reviewing game film and integrating a detailed history – including his reported present and immediate post-contact subjective symptoms – physical examination and objective metrics, we have concluded that Mr. Karius sustained a concussion during the match,” read a statement.
“At the time of our evaluation, Mr. Karius’s principal residual symptoms and objective signs suggested that visual spatial dysfunction existed and likely occurred immediately following the event.
“Additional symptomatic and objectively noted areas of dysfunction also persisted. It could be possible that such deficits would affect performance.
“We also note that Mr. Karius has reported significant and steady improvement since the concussive event, and we expect him to make a full recovery based on the results of the examination.
“We expect that with treatment and by following prescribed activity protocols he will continue to improve.
“We have encouraged vigilance and an emphasis on safety in his eventual return to full activity.”