No fracture is reported.
A ligament itself does not “fracture.” It may sprain or tear; a fracture involves bone. Grade 1 sprains are generally mild and stable, with the ligament intact, as described in
AAOS ACL guidance.
Please see an orthopedic doctor or physiotherapist for examination and a rehabilitation plan. Seek urgent care if the knee locks, repeatedly gives way, you cannot bear weight, or swelling/pain is rapidly worsening.