"I have a 36 year old female marathon runner who has a pronated forefoot on the left.  She has had ACL reconstruction surgery on the left 15 years ago.  She recently had a lateral meniscal tear and arthroscopic surgery for debridement.  In the surgery the doctor found significant lateral femoral cartilage changes.  She wants to continue to run.  I feel an orthotic will help control her pronation and decrease her knee stress.  The podiatrist  wants to post the lateral side of the orthotic to help offload the lateral compartment of the knee.  Is this correct thinking or should she just have the arch supported to correct the forefoot?  Thanks for your help with my questions."