Knee Arthroscopy: Procedure, Recovery and Risks

Knee arthroscopy is an operation performed through small openings around the knee. A surgeon passes a camera called an [arthroscope](/technology/arthroscope/) into the joint to view its surfaces, cartilage, meniscus and other structures. Small instruments may be used during the same procedure to remove loose tissue, smooth a damaged area or treat a selected finding. The exact plan depends on your examination and imaging, and the surgeon should explain what may change during the operation.

Recovery can include temporary pain and swelling, wound care, exercises and a gradual return to loading the leg. Weight-bearing and knee movement depend on what was found and treated, so some people use crutches or a brace for a period. Physiotherapy focuses on restoring movement, thigh strength, balance and confidence. Your work, driving and sport plans should follow the surgeon's instructions rather than the size of the skin incisions.

No operation is free of risk, and an individual risk frequency cannot be predicted from the procedure name alone. Possible problems include infection, bleeding, blood clots, stiffness, persistent pain, irritation from dressings or a reaction to anaesthesia. The treated tissue may also fail to settle as hoped, or the original pain may have more than one cause. Contact your surgical team urgently for fever, increasing redness or drainage, severe calf swelling, chest symptoms, or sudden breathlessness.

The result depends on the diagnosis, the condition of the joint and the treatment performed. Arthroscopy can address a specific mechanical problem, but it cannot reverse every cause of knee pain or prevent later wear. Improvement may continue as swelling settles and strength returns. Your surgeon should define the intended goal, what symptoms may remain and which activities or exercises help protect the result over time.

A scan and examination help decide whether surgery is relevant, but imaging findings must be matched with symptoms. An operation may be considered for a [meniscus tear](/conditions/meniscus-tear/) or selected [plica syndrome](/conditions/plica-syndrome/) cases. Arthroscopy is not automatically the right treatment for every painful knee, especially when symptoms are driven mainly by inflammation, weakness or degenerative change.

A surgeon may discuss knee arthroscopy when symptoms, examination and imaging point to a problem that could be treated through the joint. A [musculoskeletal MRI](/treatments/diagnostics-and-imaging/musculoskeletal-mri/) may help clarify soft-tissue findings when the diagnosis remains uncertain. The decision also considers your general health, activity needs, previous treatment and whether the expected benefit justifies the recovery process.

Before surgery, the team reviews your medicines, health history, scans and anaesthesia plan. On the day, the knee is prepared and anaesthesia is given. The surgeon makes small access points, examines the joint with the arthroscope and uses instruments if the planned treatment is appropriate. The openings are closed and dressed, followed by recovery-room monitoring and instructions for pain relief, mobility, exercises and wound care.

The first phase centres on safe mobility, swelling control and protecting the operated tissues. Later appointments check wound healing, knee movement, walking pattern and strength. Return to work or sport is staged according to the procedure and your functional progress, not simply the passage of time. Keep follow-up appointments so restrictions can be adjusted safely.

Follow the discharge instructions and seek urgent medical help for sudden breathlessness or chest pain. Contact the surgical team promptly for a hot, increasingly painful wound, persistent drainage, fever, new numbness, a cold or discoloured foot, or calf pain and swelling.

Depending on the cause, alternatives may include physiotherapy, strength and movement training, activity modification, medication advice or observation. Further assessment or imaging may be useful when the diagnosis is unclear. Discuss the expected benefit, recovery restrictions and consequences of waiting before choosing an operation.

Choose an orthopaedic surgeon who routinely assesses knee problems and can explain both surgical and non-surgical options. Bring your scan reports, medication list and a description of locking, giving way, swelling and activity limits. Ask what tissue is being treated, what rehabilitation is expected and which warning signs require contact after discharge.