MRI Results explaination!

Hi,
below are my results, can anyone tell me what they mean in laymans terms and whether or not I should expect surgery?  thanks!

Exam description: RIGHT MR LOWER EXT JOINT W/O CONTRAST

Indication: Effusion. Clicking. Difficulity with movement.

Technique: Coronal T1, coronal, sagittal and axial fat suppressed proton density imaging of the right knee.

Findings:  There is persistent complex tear of the posterior horn of the lateral meniscus with development of some of the attenuation of the meniscus (possibly postsurgical).  The ACL  is not identified in its expected location, suggesting persistent complete tear.  There is a moderate joint effusion.  There is mild bony spurring of the medial and lateral compartments.

The medial and lateral collateral ligaments, PCL and quadricepts and patellar tendons show no abnormalities.  

Impression: Cronic (chronic) ACL and lateral meniscal tears with development of some attenuation of the lateral meniscus (possibly postsurgical, recommended clinical correlation).  Moderate effusion.

BTW I have not had surgery on the knee so I am a bit confused about this post surgical thing!  I am going to see the Surgeon next week but I am just trying to see what I should expect to hear from him.