Mensah told KickOffGhana.com he will have scans on the injury before knowing whether he will return early or not.
Mensah lasted for only 28 minutes in Lyon’s 2-3 defeat to Lille and Lyon coach Claude Puel said afterwards Mensah will be out for a while.
The injury could mean Mensah whose Lyon career has been plagued by injuries could miss Wednesday’s visit by Lyon to the Nou Camp to face Barcelona in the return leg of the UEFA Champions League knockout stage.