One of the most common concerns patients have before knee surgery is the size of the cuts (incisions) and whether they will leave permanent scars. Modern ACL and meniscus surgeries are performed using arthroscopic techniques, which means the incisions are very small, precise, and designed to heal quickly.

Understanding Arthroscopic Knee Surgery

ACL reconstruction and meniscus repair are usually done through keyhole surgery, not large open cuts. Surgeons use a tiny camera called an arthroscope along with specialized instruments that are inserted through small portals around the knee. This allows excellent visibility inside the joint while minimizing damage to surrounding tissues.

Size of ACL Surgery Incisions

In most ACL surgeries, two to three small incisions are made around the knee. These are typically 5–10 mm in size, roughly the size of a shirt button or smaller. One portal is used for the camera, while the others are for surgical instruments. Because these cuts are so small, they usually heal well and leave minimal scarring.

Meniscus Surgery: Even Smaller Cuts

Meniscus repairs or trimming procedures often use micro-incisions, commonly around 5–7 mm. These portals are carefully placed to protect nearby muscles, nerves, and skin. Advanced instruments allow surgeons to work precisely through these tiny openings, reducing trauma to the knee.

Why Small Incisions Matter

Smaller incisions offer several important benefits:

  • Less pain after surgery
  • Lower risk of infection
  • Minimal scarring
  • Faster wound healing
  • Quicker return to daily activities

Most patients notice that the incision marks fade significantly over time, often becoming thin, barely visible lines.

What to Expect After Surgery

After surgery, proper wound care is essential. Keeping the incision clean and dry, following dressing instructions, and attending follow-up visits help ensure smooth healing. With correct care, most incisions heal rapidly without complications.

Final Thoughts

Thanks to advances in arthroscopic technology, ACL and meniscus surgeries today are minimally invasive, safe, and highly effective. The small size of the cuts reflects not only cosmetic benefits but also better recovery outcomes for patients. If you are considering knee surgery, understanding these details can help reduce anxiety and set realistic expectations.

Always consult your orthopedic surgeon to know what approach is best for your specific knee condition.