I had my left ACL repaired two years ago. I just reinjured it playing baseball again. Should I have a second surgery to repair the first surgery? Or should I wait and see what rehab can accomplish?

Many surgeons advise a three-to-six month trial of rehab before undergoing a revision operation. For those who are older or less active, this may be a good choice. But for younger athletes or older, very active adults, early reoperation is advised.

Studies show that an unstable or deficient knee will cause increased damage to the meniscus and joint cartilage. The result is early osteoarthritis. It may be best to have the revision surgery within three months of the reinjury. This will prevent further cartilage damage during the subacute stage.

The condition of the cartilage really dictates the final results. Any defects in the joint cartilage will inhibit twisting and turning activities. Strenuous sports activities are also limited.

Whenever possible, the surgeon will save the meniscus. This helps promote joint stability and possibly prevent degenerative changes. Technically correct surgical stabilization of the knee is the key to a good, functional outcome.