"X-rays taken in a Kiev clinic have revealed depressing news - a double break of the right tibia," Shakhtar said on their website.
"The treatment may take 10 weeks followed by difficult rehabilitation."
The Brazil international broke his leg in Friday's 1-0 defeat by Obolon Kiev.
"Unfortunately Fernandinho is out for the whole season," Shakhtar coach Mircea Lucescu told local media.
LATEST ARTICLES
