Surgeons watching a monitor showing the inside of a patient's knee during arthroscopic knee surgery. (Custom Medical Stock Photo. Reproduced by permission.)

Step A shows the anatomy of the knee from the front with the leg bent. To repair a torn meniscus, three small incisions are made into the knee to admit laparoscopic instruments (B). Fluid is injected into the joint to aid in the operation. The injury is visualized via the instruments, and the torn area is removed (C). (Illustration by GGS Inc.)