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Shoulder Dislocation: Why It Recurs, When to Operate and What to Expect from Surgery

Dr. Mario Balcázar Ganem April 2026 10 min read
Medical illustration of shoulder anatomy showing the glenohumeral joint, labrum, and rotator cuff muscles
The shoulder joint relies on the labrum and rotator cuff muscles for stability

If your shoulder has slipped out of place—whether during a game, a fall, or even while reaching—it's natural to feel afraid it will happen again. It's one of the most common concerns I hear from patients here in Querétaro.

What you need to know is simple: age is the single biggest factor determining whether your shoulder will dislocate again. And that answer changes everything about what your next step should be.

What Is Shoulder Instability?

The shoulder works like a ball sitting on a pedestal. The humeral head (the ball) rests in the glenoid cavity (the pedestal), but unlike the hip, this pedestal is very shallow. Imagine a golf ball on a golf tee—that's your shoulder.

Around this joint are support structures: muscles, tendons, and the labrum, a ring of cartilage that acts as a shock absorber and increases stability. When the shoulder dislocates, this labrum frequently tears—an injury known as Bankart lesion. There can also be a dent in the humeral head called Hill-Sachs lesion.

When these structures are damaged, the joint loses stability and the risk of future dislocations increases significantly.

The most important factor: your age

The probability that your shoulder will dislocate again depends almost entirely on how old you are. This is what medicine teaches us, and why I emphasize it so much in my practice.

The Critical Data: Age Determines Risk

This is the heart of the conversation I have with every patient presenting with a shoulder dislocation. Medical studies are very clear about this, and age defines completely different strategies:

Patient Age Recurrence Risk (without surgery) General Recommendation
Under 20 years 90-95% Consider early surgery
20-30 years 70-82% Surgery recommended if active
30-40 years 45-56% Try conservative, surgery if recurrence
Over 40 years 10-15% Conservative treatment is viable option

Critical fact:

If you are under 25 years old and your shoulder dislocated, the probability it will dislocate again without surgery is over 80%. It's not "could happen," it's "probably will happen." This is why my recommendation is very different for my young patients.

How Is Shoulder Instability Diagnosed?

In my examination, diagnosis combines what I observe during clinical examination with imaging:

Conservative Treatment: When It Works

Non-surgical treatment is a valid option, but with specific conditions:

Conservative treatment has better outcomes in patients over 40 years old, with low occupational risk, and who accept limitations in physical activity.

Surgical Treatment: Your Options

When surgery is necessary, I have two main options depending on your specific case:

1

Preoperative Evaluation

Quantify bone loss and assess associated injuries

2

Bankart Repair

Arthroscopic approach for labral lesions without major bone defects

3

Latarjet Procedure

For significant bone loss or engaging Hill-Sachs lesion

4

Rehabilitation

3-6 months of gradual recovery until return to sport

Arthroscopic Bankart Repair

This is my technique of choice for most cases. It's performed entirely arthroscopically (minimally invasive) and consists of repairing the torn labrum. Success is high: over 90% when there is no significant bone loss (less than 13.5% of the glenoid cavity).

Advantages:

Latarjet Procedure

This procedure is recommended when there is significant bone loss in the glenoid cavity (greater than 13.5%) or when a Hill-Sachs lesion will engage during movement. In this case, I transfer a bone fragment (coracoid process) from your scapula to the shoulder cavity, increasing stability.

It's a more complex technique than simple Bankart repair, with an important learning curve, but with excellent results when indicated.

Bankart vs. Latarjet Comparison

Aspect Bankart Repair Latarjet Procedure
Primary indication Bankart lesion, bone loss <13.5% Bone loss >13.5%, Hill-Sachs engagement
Approach Arthroscopic (minimally invasive) Open or hybrid
Success rate >90% 93-97%
Recovery 4-6 weeks (normal activity) 6-8 weeks (normal activity)
Postoperative pain Mild to moderate Moderate

When Should I Have Surgery? Clear Criteria

This is the question I'm asked most often, and the answer depends on several factors:

My professional advice:

In young, active patients with a first dislocation, I frequently recommend early surgery because the recurrence rate without it is simply too high. It's better to have planned surgery when the patient is mentally prepared than to experience multiple new dislocations causing more damage and frustration.

Postoperative Recovery: The Timeline

Recovery after Bankart repair follows this general process:

Weeks 1-4: Immobilization and Passive Movement

Weeks 4-8: Active-Assisted Movement

Weeks 8-12: Active Rehabilitation

Weeks 12-16+: Return to Sport

Frequently Asked Questions

How many times does the shoulder have to dislocate before surgery is needed?

Recommendations have evolved. Previously, we waited for 2-3 dislocations before operating. Today, after a first dislocation in an active young patient (under 30), early surgery is a valid option because it prevents recurrences, additional damage, and the frustration of multiple episodes. In older patients, conservative treatment is more viable.

Can you live with an unstable shoulder without surgery?

Technically yes, but with limitations. You must accept that certain movements are contraindicated, contact sports are risky, and fear of another dislocation may affect your quality of life. In patients over 40 with low activity, it is an option. In young active patients, it is generally not advisable.

How long does Bankart repair surgery take?

Arthroscopic Bankart repair typically takes between 45 minutes and 1.5 hours, depending on injury complexity. Latarjet procedure can take 90 minutes to 2 hours.

Can I return to sports after surgery?

Yes, most of my patients return to their usual sport between 4-6 months after surgery, as long as they complete appropriate rehabilitation. Contact sports require more aggressive rehabilitation. The key is strict adherence to the physical therapy program.

What happens if I don't have surgery and the shoulder keeps dislocating?

Each recurrent dislocation causes additional damage: further labral tearing, increased Hill-Sachs lesions, possible fracture. This makes eventual surgery more complex. Additionally, the risk of shoulder arthritis increases with each episode. Planned surgery is better than multiple dislocations causing progressive damage.

Does arthroscopic surgery leave a scar?

The advantage of arthroscopy is that it leaves only 3-4 small incisions (5-10 mm each). Scars are minimal, almost invisible after a few months, especially compared to open surgery which would require a 5-7 cm incision.

Did you have a shoulder dislocation?

I personally evaluate your case and clearly explain your options regarding shoulder instability and dislocation.

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Dr. Mario Balcázar Ganem

Dr. Mario Luis Balcázar Ganem

Orthopedic surgeon subspecializing in joint surgery, arthroscopy, and sports injuries. Dual high-specialty training UNAM/INR. CMOT board-certified.

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