Introduction: When You Might Need Arthroscopy

Arthroscopy is recommended when you’re experiencing persistent joint problems that haven’t improved with other treatments. If you have ongoing pain, swelling, stiffness, or limited movement in your joints, your doctor might suggest this procedure to find out what’s wrong and potentially fix it at the same time.^[1]

You should consider seeking diagnostic evaluation when joint pain interferes with your daily activities or prevents you from enjoying your normal routine. Before recommending arthroscopy, your doctor will typically conduct a thorough medical history review and perform a physical examination of the affected joint. They will also order imaging studies such as X-rays (pictures taken using radiation to see bones) to look at your joint structure.^[3]

For some conditions, your doctor may request additional imaging tests like magnetic resonance imaging or MRI (a scan using magnets and radio waves to create detailed pictures of soft tissues) or computed tomography or CT scans (detailed X-ray images processed by a computer). These tests help create a clearer picture of what might be happening inside your joint before any procedures are performed.^[3]

People most commonly need arthroscopy for joints in the knee, shoulder, elbow, ankle, hip, and wrist. The procedure is particularly useful when you have symptoms suggesting structural damage inside the joint that cannot be fully evaluated from the outside or with imaging alone.^[1]

Classic Diagnostic Methods

The Arthroscopy Procedure

Arthroscopy gets its name from two Greek words meaning “to look within the joint.” During this procedure, a surgeon makes a very small cut in your skin, usually about the size of a buttonhole or smaller—sometimes just half an inch or less. Through this tiny opening, the surgeon inserts a special tool called an arthroscope, which is a narrow tube about the width of a pencil that contains a small lens, a light source, and a fiber-optic video camera.^[1][2]

The arthroscope transmits light through fiber optics to illuminate the structures inside your joint. The tiny camera attached to the arthroscope captures images and displays them on a high-definition video monitor in the operating room. This magnified view allows the surgeon to see your joint’s interior in great detail, examining structures like cartilage, ligaments, and the area under the kneecap (in knee procedures) without needing to make a large incision that would expose the entire joint.^[3]

Before inserting the arthroscope, the surgeon positions you carefully for the procedure. They might use a special holding device to keep your joint steady in the right position. The surgeon then fills the joint space with saline (sterile salt water) to expand the area, which creates more room inside the joint and makes it easier to see all the structures and to move instruments around.^[2]

What Arthroscopy Can Diagnose

The diagnostic power of arthroscopy lies in its ability to provide a direct, magnified view of structures inside your joint that may not be visible or fully assessable through other methods. When doctors perform diagnostic arthroscopy, they’re looking for specific problems that explain your symptoms.^[2]

Common conditions identified through arthroscopy include inflammation of the synovium (the smooth lining inside your joint that produces lubricating fluid). This inflammation, called synovitis, can occur in joints like the knee, shoulder, elbow, wrist, or ankle. Synovitis is often an early stage of rheumatoid arthritis (a condition where the immune system attacks the joints), and seeing it directly helps doctors make treatment decisions.^[2][10]

Arthroscopy is excellent for diagnosing injuries to soft tissues. These include tears in cartilage such as the meniscus (the rubbery shock-absorbing cartilage in your knee) or labral tears (damage to the ring of cartilage around shoulder or hip sockets). The procedure can also identify torn ligaments, including injuries to the anterior cruciate ligament or ACL (a major stabilizing ligament in the knee) and various ankle, wrist, and knee ligament tears.^[2]

Other diagnostic findings include chondromalacia (wearing down or injury to the cartilage cushion in joints), joint impingement (when bones or tissues pinch together abnormally in places like the shoulder, hip, or ankle), nerve compression syndromes like carpal tunnel syndrome (pressure on the nerve in your wrist), and loose pieces of bone or cartilage floating inside the joint that can cause pain and interfere with smooth movement.^[2][10]

Types of Arthroscopy Based on Joint Location

Arthroscopy can be performed on many different joints throughout your body, with each type targeting specific areas and common problems. Knee arthroscopy is the most frequently performed type and is used to examine and treat problems in the largest joint in your body. During knee arthroscopy, surgeons can see the ends of the thighbone and shinbone, the underside of the kneecap, the articular cartilage covering these bones, and the meniscus cartilage.^[2][11]

Shoulder arthroscopy helps diagnose and treat conditions affecting your shoulder joint, including rotator cuff tendon tears, shoulder impingement (when the rotator cuff rubs against bone), frozen shoulder (severe stiffness and pain), and recurrent dislocations (when the shoulder keeps coming out of place). Hip arthroscopy, though less common than knee or shoulder procedures, can diagnose labral tears, hip impingement, and hip dysplasia (abnormal development of the hip joint).^[2][7]

Other specialized types include ankle arthroscopy for diagnosing ankle sprains, cartilage damage, and ankle impingement; elbow arthroscopy for conditions like tennis elbow, golfer’s elbow, and loose bodies in the joint; and wrist arthroscopy for wrist ligament tears, wrist fractures, and ganglion cysts (fluid-filled lumps).^[7]

Distinguishing Arthroscopy from Other Diagnostic Tests

Arthroscopy differs fundamentally from non-invasive imaging tests because it allows direct visualization of joint structures. While X-rays show bones well, they cannot reveal soft tissue damage like torn cartilage or ligaments. MRI scans provide detailed images of soft tissues but are still external views interpreted from signals, not direct observation.^[3]

Unlike open surgery, which requires large incisions to expose the entire joint for examination, arthroscopy uses minimally invasive techniques (surgical methods using very small cuts). The arthroscope acts as the surgeon’s eyes inside the joint without requiring the trauma of cutting through all the surrounding tissues. This is why it’s sometimes called “keyhole surgery”—you’re looking and working through a small opening rather than opening the entire area.^[4][5]

Arthroscopy for Treatment During Diagnosis

One unique advantage of arthroscopy is that diagnosis and treatment often happen during the same procedure. If the surgeon discovers a problem while examining your joint, they can frequently fix it right away without needing to schedule another surgery. To perform repairs, the surgeon makes one or more additional small incisions around your joint to insert pencil-thin surgical instruments while continuing to view everything on the monitor.^[1][3]

Common surgical procedures performed during diagnostic arthroscopy include trimming or repairing torn meniscus cartilage, reconstructing torn ligaments like the ACL, removing loose fragments of bone or cartilage that have broken off inside the joint, removing or smoothing damaged sections of articular cartilage, and resecting (cutting away) inflamed synovial tissue. The surgeon might also release compressed nerves, repair or reinforce torn tissues or broken bones, or reshape misaligned bones in the joint.^[2][3]

Preparing for Diagnostic Arthroscopy

Before undergoing arthroscopy, you’ll need to complete several preparatory steps. Your doctor will ask you to undergo standard health screening tests, which typically include blood work to check for any conditions that could cause problems with anesthesia or the procedure itself. You’ll also need a physical examination to ensure you’re healthy enough for surgery.^[5][16]

Your medical team will review all medications you take regularly. Some medications need to be stopped several days before surgery, particularly blood-thinning medications like aspirin, Plavix, or Coumadin, and certain herbal supplements. These substances can cause excessive bleeding during and after the procedure, so stopping them temporarily helps ensure your safety. Your doctor will give you specific instructions about which medications to discontinue and when to stop taking them—typically about five days before surgery for blood thinners.^[6][16]

You’ll need to arrange transportation before your arthroscopy day. Most arthroscopic procedures are performed as outpatient surgery, meaning you go home the same day. However, because you’ll receive anesthesia (medication to prevent pain during surgery), you cannot drive yourself home. Anesthetic medications can remain in your system for up to 24 hours, affecting your reflexes and judgment. You should arrange for someone to drive you home and ideally stay with you for the first 24 hours after surgery to ensure your safety.^[2][16]

On the day before your procedure, you’ll need to avoid eating solid foods after midnight. This fasting requirement ensures your stomach is empty, which reduces the risk of nausea and vomiting during or after anesthesia. More importantly, an empty stomach prevents the dangerous possibility of aspirating (breathing in) stomach contents into your lungs if vomiting occurs while under anesthesia.^[16]

Preparing your home environment is also important. Since you may have limited mobility immediately after the procedure, consider making your living space more accessible. Remove tripping hazards like loose rugs and electrical cords. If possible, set up a comfortable recovery area on your main floor so you don’t have to navigate stairs frequently. Prepare some meals ahead of time so you won’t need to stand and cook when you should be resting. Gather comfortable, loose-fitting clothing that will fit easily over bandages.^[16]

What Happens During the Procedure

On the day of your arthroscopy, you’ll arrive at the surgical facility several hours before your scheduled procedure time. You should wear loose, comfortable clothing that can accommodate a bandaged joint afterward. The surgical team will prepare the area around your joint by cleaning the skin thoroughly to reduce infection risk.^[21]

You’ll meet with an anesthesiologist who will discuss your options for pain control during surgery. You might receive local anesthesia (numbing medicine injected near the joint to block pain while you remain awake), spinal anesthesia (medicine injected in your back to numb the lower body), or general anesthesia (medicine that puts you completely to sleep). The choice depends on which joint is being examined, how long the procedure might take, and your personal preferences.^[2][9]

Most arthroscopy procedures take one to two hours, though the exact time varies depending on what the surgeon finds and whether treatment is needed. After the procedure, you’ll spend another one to two hours in a recovery room while the anesthesia wears off. Healthcare providers will monitor your vital signs, check your surgical site, and ensure you’re stable before allowing you to go home.^[2]

Recovery and Follow-up

Recovery from arthroscopy is generally faster than recovery from open joint surgery because the incisions are much smaller and less tissue is disturbed. However, the recovery time varies significantly depending on what was done during the procedure. If the surgeon only examined your joint without performing repairs, recovery might take just a few weeks. If extensive repairs were made, such as ligament reconstruction, recovery could take several months.^[2]

In the days immediately following surgery, you’ll likely experience some pain, swelling, bruising, and stiffness around the joint. Your doctor will prescribe pain medications to help manage discomfort. Applying ice packs to the surgical area for at least 20 minutes, three to four times daily, helps reduce swelling. Keeping the joint elevated above the level of your heart also minimizes swelling and pain.^[6][14]

Your surgeon will provide specific instructions for wound care. Typically, you can shower 48 to 72 hours after surgery and clean the incisions with regular soap and water. However, you should avoid taking baths or soaking the joint until your doctor confirms the incisions have healed completely. If your incisions are covered with a dressing, keep it clean and dry, and you may be instructed to remove it after a couple of days. Some surgeons use strips of tape over incisions, which should remain in place for about a week or until they fall off naturally.^[6][14]

Physical rehabilitation is crucial for optimal recovery. You’ll likely begin gentle exercises very soon after surgery, possibly the same day or the next day. These initial exercises might include simple movements like rotating your ankle, flexing and extending the joint gently, and moving your toes. As healing progresses, a physical therapist will guide you through increasingly challenging exercises designed to restore strength, flexibility, and range of motion.^[14]

Most people can return to desk jobs within a few days after arthroscopy. However, if your work involves physical labor, lifting, or prolonged standing and walking, you may need several weeks to a few months before returning to full duty. Your surgeon will provide guidance based on your specific job requirements and the nature of the procedure performed.^[2][14]

Risks and Safety Considerations

Arthroscopy is considered a very safe procedure, and complications are uncommon. The risk of serious problems is much lower than with open joint surgery. However, as with any surgical procedure, some risks exist that you should understand before consenting to arthroscopy.^[1]

Infection can occur with any surgery that breaks the skin, though the risk is lower with arthroscopy than with open surgery because the incisions are so small. Signs of infection include increasing redness, warmth, swelling, or drainage from the incision sites, or developing a fever. If you notice these symptoms, contact your doctor immediately.^[1]

Tissue or nerve damage is possible because instruments are inserted into and moved around inside the joint. The placement and movement of these tools could potentially damage the joint’s structures, including cartilage, ligaments, or nearby nerves. This is why arthroscopy should only be performed by experienced orthopedic surgeons who specialize in this technique.^[1]

Blood clots are a rare complication, but procedures lasting longer than an hour slightly increase this risk. Blood clots typically form in leg veins and can be dangerous if they travel to the lungs. Your surgical team will take measures to prevent clots, such as encouraging movement soon after surgery and sometimes prescribing blood-thinning medications.^[1]

Other possible complications include postoperative bleeding, joint stiffness, numbness in areas of skin near the incisions, and rarely, chronic pain. Despite these potential risks, the benefits of accurate diagnosis and the possibility of same-day treatment often outweigh the relatively small chance of complications for most patients.^[6]