Recovery after ACL Reconstruction Surgery can take several months to complete. The range can be anywhere from 9 to 12 months for complete recovery. There are a lot of factors that may play a role in a patient’s recovery including, but not limited to: age, fitness level, pre-existing injuries and what type of job/activity the patient wants to return to. For example, someone returning to a high impact sport will definitely require up to 12 months of treatment to make sure that they are capable of perfoming all the necessary demands of their game.