Shoulder arthroscopy is a minimally invasive surgical procedure where an orthopedic surgeon inserts a small camera and thin instruments through tiny incisions to diagnose and repair problems inside your shoulder joint. Instead of opening the shoulder with a large cut, the surgeon works through incisions roughly the size of a buttonhole, viewing the inside of your joint on a monitor in real time. It’s one of the most common orthopedic procedures performed today, used for everything from rotator cuff tears to chronic instability.
How the Procedure Works
The surgeon begins by making a small incision at the back of your shoulder, about two centimeters below and inward from the bony point at the top. A narrow tube with a camera on the end (the arthroscope) is guided through this opening and into the joint space. The joint is filled with sterile fluid, which expands the space and gives the camera a clear view. Everything the camera picks up is projected onto a screen, giving the surgeon a detailed look at cartilage, ligaments, tendons, and bone surfaces.
One or two additional small incisions are made at the front of the shoulder so the surgeon can pass instruments through to cut, shave, stitch, or anchor tissue. These entry points are positioned carefully to avoid damaging the rotator cuff tendons. The surgeon follows a systematic inspection pattern, examining the joint from multiple angles: the labrum (the ring of cartilage around the socket), the biceps tendon, the ligaments that stabilize the joint, and the rotator cuff attachment points on the upper arm bone. If a repair is needed, it’s typically performed during this same session.
Conditions It Treats
Shoulder arthroscopy can address a wide range of problems. The most common include:
- Rotator cuff tears and tendonitis: torn or inflamed tendons that connect the muscles surrounding the shoulder to the bone
- Labral tears: damage to the cartilage ring lining the shoulder socket, often from dislocations or repetitive overhead motion
- Shoulder impingement: irritation of the rotator cuff caused by bone or tissue pressing on the tendon during arm movement
- Shoulder instability: a loose or repeatedly dislocating shoulder, often due to torn ligaments or a stretched joint capsule
- Frozen shoulder: severe stiffness from thickened, inflamed tissue around the joint
- Biceps tendon problems: fraying, tearing, or inflammation of the tendon that attaches the biceps muscle to the shoulder
- Calcium deposits: hard deposits in the rotator cuff that cause pain and restricted movement
- Arthritis: removal of damaged cartilage and loose tissue fragments to relieve symptoms, though this provides temporary rather than permanent relief
- Certain fractures and infections: small bone fractures near the joint and infections that need to be cleaned out
Arthroscopic vs. Open Surgery
The main advantage of arthroscopy over traditional open surgery is the size of the incisions. Open shoulder surgery requires a larger cut to give the surgeon direct access, which means more tissue disruption, more postoperative pain, and a longer initial healing period. Arthroscopy causes less damage to the surrounding muscle and soft tissue, which generally translates to less pain in the first days after surgery.
That said, the two approaches produce similar long-term results for many conditions. For rotator cuff repairs, studies show both methods lead to comparable recovery times and functional outcomes. Open repair still has a role for massive or complex tears, or in situations where the surgeon needs more direct access. Arthroscopy also demands significant technical skill, since the surgeon is working through small openings while watching a screen rather than looking directly at the tissue.
What Anesthesia Feels Like
Most shoulder arthroscopies use general anesthesia combined with a nerve block. The nerve block targets the bundle of nerves in your neck that supply sensation to the shoulder and arm. It’s typically placed using ultrasound guidance while you’re awake, before general anesthesia begins. You’ll feel a brief sting and some pressure, but the block itself numbs the shoulder within about 20 minutes.
The nerve block does more than just help during surgery. It significantly reduces pain afterward, often lasting 20 to 24 hours when combined with certain medications. Some surgeons use a small catheter that delivers a continuous drip of numbing medication to the nerve for extended pain control. Patients who receive a nerve block tend to need less opioid medication, experience less nausea, and are more likely to go home the same day. About 1% of patients experience a complication related to the nerve block itself, most of which are temporary.
Long-Term Results
Outcomes depend heavily on what’s being repaired. For posterior shoulder instability (a common reason for labral repair), one long-term study followed patients for an average of 13 years and found an 86.7% survival rate of the repair at 10 years, meaning the vast majority didn’t need further surgery. Pain and function scores improved significantly: the average functional score jumped from 72.6 before surgery to 89.9 afterward. Patient satisfaction was high, with a median rating of 8 out of 10, and 67% returned to their original fitness routines.
For rotator cuff injuries, the American Academy of Orthopaedic Surgeons’ 2025 guidelines note that both physical therapy alone and surgery produce significant improvement for small to medium tears. This means arthroscopy isn’t always the first step. Many patients try structured rehab first and only proceed to surgery if symptoms persist. The guidelines also found that a once-common additional step, shaving bone from the underside of the shoulder blade during rotator cuff repair, doesn’t provide extra benefit and is no longer routinely recommended.
Risks and Complications
Shoulder arthroscopy is safe, but not risk-free. A review of over 27,000 cases from the American Board of Orthopaedic Surgery found that about 7.9% experienced some form of surgical complication. That sounds high, but the most common issue was stiffness or scar tissue buildup inside the joint, accounting for 2.2% of cases. This is usually treatable with physical therapy, and sometimes a second procedure.
More serious complications are uncommon. The rate of revision surgery (needing a second operation) was 0.8%, and the hospital readmission rate was 1.0%. Medical complications like blood clots or heart issues occurred in 2.2% of patients. Infection, nerve damage, and excessive bleeding are possible but rare.
Recovery Timeline
Recovery happens in stages, and the total timeline depends on what was repaired. The incisions themselves heal within one to two weeks. During this initial phase, your arm will be in a sling. Recent guidelines suggest that for small to medium rotator cuff repairs, early weaning off the sling to allow gentle daily activities doesn’t hurt healing compared to wearing it for weeks, though your surgeon will guide this decision based on your specific repair.
Physical rehabilitation is the backbone of recovery and typically lasts three to six months, sometimes longer. It follows a structured progression:
During the first four to six weeks, the goal is protecting the repair while preventing your shoulder from freezing up. You’ll do gentle pendulum exercises (small arm circles while leaning forward), passive stretches where the therapist moves your arm for you, and active movement of your elbow, wrist, and hand to maintain circulation.
From roughly weeks four through eight, you’ll begin moving your shoulder more actively with assistance, using tools like a cane or your other arm to guide the motion. Gentle exercises to stabilize your shoulder blade are introduced, along with light resistance holds.
Around weeks eight to twelve, actual strengthening begins. This includes resistance exercises for the rotator cuff, rows, and basic arm exercises like biceps curls. The focus shifts from simply regaining motion to rebuilding the muscle support around the joint.
After twelve to sixteen weeks, you’ll progress to sport-specific or work-specific training. This phase includes more demanding strengthening, stability drills, and, for athletes, throwing or overhead movement patterns. Minor procedures may reach this stage faster, while complex repairs can take considerably longer. Full return to heavy manual labor or competitive sports often takes four to six months at minimum.