The Nippon Ham Fighters announced today that Yuya Taniguchi will have surgery on his right knee (anterior cruciate ligament) later this month. Taniguchi was diagnosed with an ACL injury on March 3.
Taniguchi will be hospitalized for about three weeks. He will most likely require around seven months for a full recovery.
[UPDATE 3/16 @ 10:02pm]
Taniguchi had reconstructive surgery on his right knee at a hospital in Sapporo earlier today. He will remain in the hospital for about three weeks. He might require about seven months for a full recovery.
Source: Nikkan Sports 3/16/2017