On a personal note, the MRI of my right knee shows:
Complete ACL tear.
Oblique tear of posterior horn of medial meniscus articulating with inferior articulating surface.
Small suprapatellar bursa effusion.
Mild prepatellar bursitis.
This is the result of landing a jump-turning kick while sparring in Tae Kwon Do class the evening of Friday 20 January. The surgeon is giving it another month to settle down before I can get on his calendar for ACL Reconstruction surgery. As luck would have it, this is the same guy who gave me good results for left shoulder surgery in February 2002. Post-surgery recovery time for the ACL is 9 months to become fully active, and 12 months to return to the activity that caused the injury.