The keyholes are tine stab incisions on either side of the knee cap tendon. In general most arthroscopies are done via these two cuts. Occasionally a third keyhole may be required.
Most of arthroscopic knee surgery is done as a day case and under general anaesthesia. It is a quick procedure that usually takes 30 minutes or less. A local anaesthetic agent is injected in to the knee for pain relief.
You should be able to go home the same day in most situations. A responsible adult should take you home in a car or taxi and stay with you for 24 hours.
Bleeding, infection, thrombosis or reactions from anaesthesia are less common risks. Damage to nerves or blood vessels is extremely rare and has been more reported after meniscus repair.
develop a high temperature,
see fluid, pus or blood coming from the incisions, or
develop numbness or tingling near to the joint
Contact your hospital ward nurse or your physiotherapist who would liaise with your Surgeon. If it is at late hours in the night, you may have to attend the emergency department and see the on call Orthopaedic Doctor who would assess your knee and speak to your surgeon.