Knee Arthroscopy for Meniscal Tear
The meniscus is a rubbery, C-shaped piece of cartilage that cushions the knee, provides stability and helps distribute body weight across the knee joint. Each knee has two menisci, one at the outer edge (the lateral meniscus) and one at the inner edge (the medial meniscus). A torn meniscus can prevent the knee from functioning normally. Left untreated, it can lead to early arthritis of the knee joint.
Acute tears result from any activity that forcefully twists or rotates the knee. Tears often occur with injury to the anterior cruciate ligament (ACL). In older adults, the cause is usually degenerative changes in the knee. Aged, worn tissue is more prone to tears.
When is surgery recommended?
The type of treatment for a meniscus tear depends on where the tear occurs (outer edge or inner edge), its severity and whether other parts of the knee, such as the ACL, are injured.
If your meniscus tear is acute or you want to return to high-level athletics as soon as possible, surgery is necessary. Repair is only an option when the tear is on the outer edge of the meniscus where there is still blood flow to help with healing. When it’s an inner-edge tear, with no blood flow, the damaged tissue must be removed. The vast majority of patients have their meniscus removed rather than repaired.
If your tear is small and on the outer edge of the meniscus, it may not require surgery. As long as your symptoms do not interfere with daily living and your knee is stable, conservative treatment – such as rest, activity modification and non-steroidal anti-inflammatory drugs (NSAIDs) – may be all you need.
What is the recovery time?
Specific recovery time varies depending on the type of surgery you have. Recovery from arthroscopic meniscal tear surgery is relatively quick, and most patients are able to resume normal activities within a few weeks. If you have a meniscal repair, the recovery time and rehabilitation period may be longer – up to six weeks in a knee brace or with crutches.