Sigh. Talk about blind leading the blind.
MRIs primarily see ACL and PCL injuries, and even then only about 90% of ACL tears are seen in an MRI, with MCL tears being a much lower percentage. Torn knee ligaments are diagnosed primarily through the physician hearing how the injury occurred, feeling around the knee, and using different exercises/stretches to test how the ligaments respond to various movements. Once the physician feels they know what the injury is, they get the MRI to check for damage to the ACL/PCL and to try to pinpoint where the MCL tear occurred and just how severely, if possible. Grade 1 and 2 MCL tears would most likely not show up on an MRI, and have recovery times of 2-8 weeks. They are not hard to diagnose.
Surgery is usually not recommended for MCL injuries unless the ACL was torn as well, there is enough time in the season for a return post-op, or it is a Grade 3 tear with Grade 2+ or 3+ laxity, in which case surgery may be recommended.
" Long-term studies of the most severe category of MCL injuries are needed to define the best treatment. Nonetheless, most medial-sided injuries are best treated nonoperatively, with proven great success." (From link below)
Here's a good article that I read for school last semester, that should explain it all more thoroughly if you're willing to learn a few things--
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1888587/
Cliffs-
MRI not needed for MCL injury diagnosis
No surgery needed unless there is damage to other ligaments or it is a very severe tear
PS, crustyboy- your link claiming a negative MRI actually just says that there was no long term damage and that he wouldn't be affected going into the next season. Hint- that just means the ACL was fine
Sincerely,
3rd year Physical Therapy student with almost 1400 clinical hours logged
Nice try though