What is shoulder arthroscopy?
Shoulder arthroscopy is a minimally invasive surgical procedure used to diagnose and treat a range of shoulder joint problems. The surgeon inserts a very small camera called an "arthroscope" through an incision no larger than one centimetre, which gives a clear, magnified view of all the structures inside the joint on a high-definition screen.
This technique represents a major shift in orthopedic surgery, as it has replaced traditional open surgery in many cases. Arthroscopy dates back to the 1970s, but it has advanced enormously over the past two decades alongside progress in imaging technology and fine surgical instruments.
More than 1.5 million shoulder arthroscopies are performed worldwide every year, making it one of the most common surgical procedures in orthopedic and joint surgery.
The difference between arthroscopy and open surgery
Arthroscopic shoulder surgery differs from traditional open surgery in several fundamental ways, all of which work in the patient's favour. In open surgery, the surgeon needs a large incision that may reach 10-15 centimetres to access the joint, whereas arthroscopy requires only 2-4 small incisions, none of which exceeds one centimetre.
| Point of comparison | Shoulder arthroscopy | Open surgery |
|---|---|---|
| Size of the surgical incision | 1 cm (2-4 incisions) | 10-15 cm |
| Hospital stay | One day or less | 2-3 days |
| Pain after surgery | Mild to moderate | Moderate to severe |
| Initial recovery time | 1-2 weeks | 4-6 weeks |
| Risk of infection | Less than 1% | 2-4% |
| Scarring | Almost none | Visible and permanent |
How shoulder arthroscopy techniques have evolved
Recent years have seen major leaps in shoulder arthroscopy techniques: cameras have become smaller and much sharper (4K and 8K), while surgical instruments have grown more flexible and more precise. Augmented reality and 3D planning have also entered the field, helping surgeons map out the operation with extreme accuracy before it begins.
Indications for shoulder arthroscopy
Orthopedic surgeons turn to shoulder arthroscopy when conservative treatment (medication and physiotherapy) fails to relieve pain or restore shoulder function. The conditions that call for the procedure vary widely and include injuries to tendons, ligaments and cartilage, as well as some inflammatory and degenerative joint diseases.
Rotator cuff tear
Rotator cuff injuries are among the most common causes of shoulder pain and are the leading reason for performing shoulder arthroscopy. The rotator cuff is a group of four tendons that wrap around the head of the humerus and hold it in the joint socket; it is responsible for rotational shoulder movement and for raising the arm.
A rotator cuff tear occurs for several reasons, including: acute injuries such as falling on the shoulder or suddenly lifting a heavy weight, gradual wear with advancing age, and repetitive strain, especially in athletes and people who work with their arms raised above head height. Symptoms of a rotator cuff tear range from mild pain with shoulder weakness in partial tears, to an inability to raise the arm along with severe night pain in full-thickness tears.
Recurrent shoulder dislocation and instability
Shoulder dislocation happens when the head of the humerus comes out of the joint socket (the glenoid fossa). Because the shoulder has such a wide range of movement, it is the joint most prone to dislocation in the body. The problem is that the first dislocation usually weakens the surrounding ligaments and tissues, raising the likelihood of further dislocations to as much as 90% in young patients.
Shoulder arthroscopy is used to repair the damaged labrum and ligaments through a procedure known as a Bankart repair, in which the torn tissue is reattached in its correct position using small dissolvable anchors.
Inflammation and tearing of the shoulder tendons
This includes biceps tendonitis and bursitis. Chronic inflammation may progress to a partial or complete tear of the tendon, requiring surgery to repair it or to fix it in a new position if the damage is severe.
Shoulder impingement syndrome
This syndrome occurs when the rotator cuff tendon rubs against the bony prominence at the top of the shoulder (the acromion) as the arm is raised. Repeated friction causes inflammation and swelling, and over time it may lead to a tendon tear. Arthroscopy is used to shave part of the protruding bone (acromioplasty) and widen the space available for the tendon.
Labral injuries (SLAP lesions)
The labrum is a ring of cartilage that surrounds the shoulder socket, deepening it and increasing its stability. SLAP injuries (Superior Labrum Anterior to Posterior) involve a tear in the upper part of this ring, and are common among athletes, especially baseball pitchers and tennis players.
Preparing for shoulder arthroscopy
Preparation for shoulder arthroscopy begins several weeks before the scheduled date and involves a set of tests and measures designed to keep you safe and achieve the best possible outcome. Following your doctor's instructions at this stage contributes a great deal to the success of the surgery and to a faster recovery.
Required diagnostic tests
Before deciding on surgery, your doctor will request a group of diagnostic tests to pinpoint the nature of the problem and draw up a suitable surgical plan. These include X-rays, which show the bones and reveal any fractures, bone spurs or arthritis, and MRI, which is the gold standard for assessing soft tissues such as tendons, ligaments and cartilage.
In addition, you will need routine pre-operative tests including a full blood work-up, an ECG (for patients over 40 or those with cardiac risk factors), assessment of kidney and liver function, and clotting tests.
Pre-operative instructions
- Stopping blood thinners: stop taking aspirin, warfarin and anti-inflammatory medication 7-10 days before surgery (after consulting your doctor)
- Fasting: avoid food and drink for 8 hours before the scheduled time of surgery
- Stopping smoking: ideally stop at least 4 weeks beforehand to improve wound healing
- Preparing your home: put everyday items within easy reach and lay out clothes that are easy to put on
- Arranging transport: make sure someone can accompany you to hospital and bring you home
- Pre-operative physiotherapy: some doctors recommend a strengthening programme before surgery to improve results
What to expect on the day of surgery
On the day of surgery you will arrive at the hospital one or two hours before your appointment to complete registration and preparation. The anaesthetist will assess you and discuss the available anaesthesia options with you. You will change into a hospital gown and then be taken to the operating theatre, where the anaesthetic team begins preparing you.
How is shoulder arthroscopy performed?
Shoulder arthroscopy follows a precise, methodical sequence of steps, and understanding them will help ease your anxiety and approach the operation with greater confidence. A complete medical team — the surgeon, the anaesthetist and the nursing staff — works together to keep you safe throughout the procedure.
Types of anaesthesia used
The anaesthetist decides which type of anaesthesia suits your case based on several factors, including your general health and the type and expected length of the planned procedure. The options include general anaesthesia, which keeps you fully asleep throughout the operation; local anaesthesia with sedation, where you are awake but relaxed with only the shoulder numbed; and regional anaesthesia (brachial plexus block), which numbs the entire arm.
In most shoulder arthroscopies, a combination of general anaesthesia and a nerve block is preferred, as this provides better pain control both during the operation and for several hours afterwards.
The surgical steps in detail
Preparing the patient and surgical positioning
After anaesthesia, the patient is placed in the beach-chair position (semi-seated) or in the lateral decubitus position with gentle traction on the arm. The shoulder and the whole arm are fully sterilised and covered with sterile drapes.
Inserting the arthroscope and diagnostic inspection
The surgeon makes a small incision (about 1 cm) at the back of the shoulder, then inserts the arthroscope connected to a high-definition camera. Sterile saline is pumped in to expand the joint and improve visibility, and the surgeon then examines all the structures of the joint on the screen.
Inserting the surgical instruments
The surgeon makes one or two further incisions at the front or side of the shoulder to introduce the fine surgical instruments. These instruments vary with the type of procedure and include: cutting and debridement tools, suturing devices, and fixation anchors.
Carrying out the surgical repair
Depending on the type of injury, the surgeon performs the required procedure: repairing the torn tendon by suturing it back to the bone, removing inflamed or damaged tissue, shaving bone spurs, or reattaching detached ligaments. Every step is monitored precisely on the screen.
Finishing the operation and closing up
Once the repair is complete and the result confirmed, the saline and instruments are removed, the incisions are closed with small cosmetic stitches or adhesive medical strips, and dressings and a shoulder sling are applied.
Length of surgery and hospital stay
Shoulder arthroscopy usually takes between 30 minutes and two hours, depending on the type of injury and how complex it is. Simple procedures such as removing inflamed tissue or purely diagnostic arthroscopy may take less than an hour, while a large rotator cuff repair or a complex stabilisation procedure may need two hours or more.
Most shoulder arthroscopies are performed as day-case surgery, meaning you can go home the same day after a few hours in the recovery room. In some complex cases, or if there are particular health concerns, it may be preferable to stay one night in hospital for monitoring.
After shoulder arthroscopy
The post-operative phase is decisive in determining the long-term success of shoulder arthroscopy. Following your doctor's instructions and the rehabilitation programme contributes greatly to a faster recovery and to the quality of the final result. The recovery journey ranges from a few weeks in simple procedures to several months after large rotator cuff repairs.
The four stages of recovery
Recovery after shoulder arthroscopy is divided into four consecutive stages, each with its own goals and requirements. The first stage runs from week one to week six and focuses on protecting the surgical repair and reducing pain and swelling. The second stage, from week six to week twelve, aims to restore the shoulder's range of motion gradually. The third stage, from month three to month six, concentrates on strengthening the shoulder muscles and rebuilding power. The fourth stage, after month six, aims at a gradual return to sport and heavy work.
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We offer a comprehensive, detailed guide covering every stage of recovery with illustrated exercises and practical advice
Read the full recovery guide: After shoulder arthroscopy →Risks and complications of shoulder arthroscopy
Like any surgical procedure, shoulder arthroscopy carries some potential risks and complications, although it is considered one of the safest operations in orthopedics. The overall complication rate does not exceed 4-5%, and most complications are minor and treatable. Understanding these risks helps you make an informed decision and recognise early warning signs should they appear.
Common and rare complications
The most common complications include pain and swelling after surgery (which is normal and expected), temporary shoulder stiffness, which occurs in 5-10% of cases and is treated with intensive physiotherapy, and temporary weakness of the shoulder muscles that improves with rehabilitation.
Rare complications include infection (less than 1%), damage to nerves or blood vessels (less than 0.5%), failure of the surgical repair and re-tearing (5-15% in rotator cuff repair), and blood clots (very rare in shoulder surgery).
A fever above 38.5°C, increasing redness and swelling with discharge from the wound, severe pain that does not respond to painkillers, persistent numbness or tingling in the arm or hand, or shortness of breath or chest pain.
📋 Detailed information about the risks
To learn more about risk factors and how to reduce and manage the chance of complications
Read: Risks of shoulder arthroscopy — the real dangers and how to avoid them →Non-surgical alternatives to shoulder arthroscopy
Not every shoulder problem requires surgery. In fact, many patients improve markedly with conservative treatment, particularly in the early stages of an injury or with small partial tears. The decision to operate depends on several factors: the type and size of the injury, the patient's age and activity level, their response to conservative treatment, and their functional and athletic demands.
When can surgery be avoided?
Conservative treatment can be tried first in small partial tears (less than 50% of the tendon's thickness), in older patients with limited activity levels, in cases where pain is the main complaint without significant loss of function, and in patients who have contraindications to surgery or anaesthesia.
Non-surgical options include: rest and activity modification, anti-inflammatory medication, intensive physiotherapy to strengthen the surrounding muscles, cortisone injections to control inflammation, and modern regenerative treatments such as platelet-rich plasma (PRP) injections.
🩺 Looking for alternatives to surgery?
We offer a comprehensive guide to non-surgical treatment options and how effective they are
Read: Treating a torn shoulder tendon without surgery — the available options and their effectiveness →Success rate of shoulder arthroscopy
Shoulder arthroscopy is a highly successful procedure, with satisfying results for most patients. Success rates vary with the type of procedure, the patient's condition and a number of other factors, but generally range between 85% and 95%.
Success statistics by type of injury
| Type of procedure | Success rate | Notes |
|---|---|---|
| Rotator cuff repair (small tear) | 90-95% | Excellent results in recent tears |
| Rotator cuff repair (large tear) | 80-85% | Depends on tissue quality and tear size |
| Shoulder instability treatment (Bankart) | 90-95% | Recurrent dislocation rate 5-8% |
| Acromioplasty (impingement treatment) | 85-90% | Substantial pain relief |
| SLAP lesion repair | 80-90% | Best results in young patients and athletes |
Factors that influence the outcome
Several factors affect the success of the operation and its final results. On the patient's side: age (results are better in younger patients), general health, adherence to the rehabilitation programme, and smoking, which significantly reduces the chances of healing. On the injury's side: the size of the tear and how recent it is, the quality of the remaining tissue, and the presence of accompanying degenerative changes. On the surgical side: the surgeon's experience and annual case volume, and the repair technique used.
Cost of shoulder arthroscopy
The cost of shoulder arthroscopy varies widely depending on the country, the hospital, the type of procedure and the surgeon's experience. It also differs according to whether the operation is covered by health insurance. It is important to discuss the expected costs with the hospital and the surgeon before surgery so that you have a clear picture.
Factors that affect the cost
The cost is influenced by several factors, chief among them: the type of procedure and its complexity (diagnostic arthroscopy alone costs less than a rotator cuff repair), the medical supplies used (particularly fixation anchors, which may cost hundreds of dollars each), the length of hospital stay, anaesthesia and medical staff fees, and the cost of subsequent physiotherapy.
Is it covered by health insurance?
Most health insurance policies cover shoulder arthroscopy if it is medically necessary and supported by appropriate investigations and reports. It is advisable to contact your insurance company before surgery to confirm coverage and pre-approval, and to find out your deductible and any additional expenses you may be responsible for.
How to choose the right orthopedic surgeon
Choosing the right surgeon is one of the most important decisions affecting the outcome of the operation. Look for a surgeon who specialises in shoulder and upper limb surgery, not just a general orthopedic surgeon. The surgeon's experience and the number of operations they perform each year are important indicators of their competence.
Qualifications and experience to look for
Look for a surgeon with subspecialty training in shoulder and elbow surgery, with at least 5 years of experience performing arthroscopic procedures, who carries out a large number of these operations annually (the higher the number, the greater the experience), and who has a good track record of surgical results and patient satisfaction.
Questions you should ask your doctor
- How many shoulder arthroscopies do you perform each year?
- What is your success rate with cases similar to mine?
- What are the possible complications in my specific case?
- Are there alternatives to surgery that could be tried first?
- How long is recovery expected to take before I return to my activities?
- What is the physiotherapy plan after the operation?
- What happens if the operation does not achieve the desired results?
Frequently asked questions about shoulder arthroscopy
Shoulder arthroscopy usually takes between 30 minutes and two hours, depending on the type of injury and how complex it is. Simple procedures such as removing inflamed tissue may take less than an hour, while a full rotator cuff repair may need two hours or more.
During the operation you will feel no pain thanks to the anaesthetic. Afterwards, it is normal to feel moderate pain that can be controlled with the prescribed painkillers. Most patients describe the pain as less than they expected, and it improves noticeably during the first week.
You can return to driving (if the car is automatic and the operated shoulder is not the one used for driving) after 2-3 weeks, provided you have stopped taking strong painkillers. For manual cars, or if the operation was on the right shoulder, you may need 4-6 weeks.
This depends on the nature of your job. Light office work: 1-2 weeks. Work requiring use of the hands: 4-6 weeks. Heavy physical work: 3-6 months. Your doctor will set the appropriate date based on your progress in recovery.
Yes, there is a chance of re-tearing ranging between 5% and 20%, depending on the size of the original tear, the quality of the tissue, the patient's age and their adherence to the rehabilitation programme. Small tears treated early have far lower recurrence rates.
Most patients need 12-24 physiotherapy sessions spread over 3-6 months. Sessions usually start a week after surgery at a rate of 2-3 per week, then gradually decrease as recovery progresses. Sticking to your home exercises is no less important than the sessions themselves.
Walking and light lower-body exercise: after two weeks. Swimming (without using the affected arm): after 6-8 weeks. Non-contact sports: 3-4 months. Contact and throwing sports: 6-9 months. The timing depends on the type of injury and the extent of recovery.
No. One of the main advantages of shoulder arthroscopy is that it leaves very small scars (2-4 incisions, none larger than 1 cm). Over time these scars become almost invisible, especially with proper wound care and the use of sun protection.
Yes — age alone is not a barrier to surgery. Many patients over 70 undergo shoulder arthroscopy successfully. The decision depends on general health, the level of activity required, and tissue quality. Simpler options such as joint debridement may be more suitable for older patients.
Shoulder arthroscopy is used to repair soft tissues (tendons, ligaments and cartilage) while preserving the natural joint. Shoulder replacement, on the other hand, is used in cases of severe arthritis and bone erosion, where the joint is replaced entirely with an artificial one.
Conclusion
Shoulder arthroscopy represents a major advance in treating shoulder injuries and problems, combining high effectiveness with minimal surgical intervention. With success rates between 85% and 95%, few complications and a faster recovery than open surgery, it has become the first choice for treating many shoulder conditions.
The key to success lies in an accurate diagnosis, choosing an experienced specialist surgeon, and full commitment to the rehabilitation programme after the operation. Do not hesitate to put all your questions to your doctor and to discuss your expectations and goals for the surgery openly.
If you suffer from shoulder pain or limited movement that has not responded to conservative treatment, shoulder arthroscopy may be the right solution to restore your quality of life and return you to the activities you enjoy.
Shoulder arthroscopy is a safe and effective procedure with high success rates of up to 95%. Full recovery takes 4-6 months with commitment to physiotherapy. Complications are rare and most are treatable. Choosing a specialist surgeon and sticking to rehabilitation are the two keys to success.
