Take everything with a grain of salt. It's a good reminder/reality check to remember that many of the frequent posters are those with chronic problems, failures and ill advised surgeries. I won't take anything away from their experiences, but it definitely doesn't mean you will have a failed surgery. If you are concerned, you could discuss with your OS.† Overall, don't worry until you have a reason to worry. Be patient and work on your rehab... at five weeks, how are you doing? I had a Lateral Lengthening (version of a LR) in combo with my MPFLr. I was skeptical, and have some hypermobility as well. As my knee is feeling better, I'm glad I let my OS perform this portion of the surgery as I can see the benefits.
A LR is more often indicated in a combo procedure, (i.e. w/ TTT, MPFL, etc) as in the discussion in this thread Ė not to say the Doctorís always get these indications right. LER - An isolated LR is what is rarely indicated as most often it simply fails to address the real problem, supported by your research and comments by your PTís. So w/ isolated LR, patients are often left with a knee that hasnít gotten better, still dislocates, etc., in more rare cases it causes more problems than you started with.