CNN —The head doctor at Spanish football club Atlético Madrid has been called upon by the Vatican to treat Pope Francis’ knee injury. José María Villalón, a specialist in orthopedic surgery and traumatology, told Spanish radio station COPE that he was part of a group of specialists who traveled to treat Pope Francis. In an interview with Reuters in July, Pope Francis spoke about the injury for the first time, saying he had suffered “a small fracture” in the knee when he took a misstep while a ligament was inflamed. Villalón told COPE that Pope Francis is suffering from an “arthritic process which is affecting various joints.”He continued: “Sometimes, it starts in a joint with arthritis and other joints worsen because they carry more load than normal. CNN has reached out to the Vatican and Atlético for comment.

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