Do All Rotator Cuff Tears Need Surgery?

Being told that you have a rotator cuff tear can sound alarming. A common assumption is that if a tendon is torn, it needs to be surgically repaired.

Fortunately, this is not always the case.

Many rotator cuff tears can be successfully managed without surgery, particularly if pain is improving and the shoulder remains strong and functional.

The decision to operate depends on much more than simply whether an MRI shows a tear. We need to consider your symptoms, the size and type of tear, your strength, your age and activity level, how the injury occurred and the likelihood that the tear will progress over time.

What is the rotator cuff?

The rotator cuff is a group of four tendons that surround the shoulder joint.

These tendons help lift and rotate the arm and, importantly, keep the ball of the shoulder centred within the socket during movement.

Rotator cuff tears are extremely common and become more common as we get older.

Some tears develop gradually as part of the normal ageing process, while others occur suddenly following an injury.

This distinction can be important when deciding whether surgery is required.

Does a tear on an MRI automatically need surgery?

No.

One of the most important things to understand about rotator cuff tears is that MRI findings and symptoms do not always correlate.

Some people have significant tears and surprisingly little pain or weakness. Others have considerable shoulder pain despite having a relatively small tear.

Rotator cuff tears can also be found on scans in people who have no shoulder symptoms at all.

We therefore do not operate on an MRI scan.

We treat the patient.

The scan helps us understand the structural problem, but your symptoms, examination findings and functional requirements are just as important.

Which rotator cuff tears can often be treated without surgery?

Non-operative treatment can be very successful for many patients.

It is particularly reasonable when:

• The tear has developed gradually
• Pain is manageable or improving
• You still have good shoulder strength
• You can perform most everyday activities
• The tear is relatively small
• Your functional demands are modest
• There is no significant deterioration in shoulder function

Treatment may include activity modification, appropriate pain relief and a structured physiotherapy program.

Physiotherapy focuses on maintaining movement and strengthening the remaining rotator cuff and muscles around the shoulder blade.

Can physiotherapy heal a torn tendon?

This is an important distinction.

Physiotherapy does not usually make a full-thickness rotator cuff tear physically reattach itself to the bone.

However, that does not mean physiotherapy cannot be successful.

The goal of rehabilitation is to improve how the shoulder functions despite the structural tear.

Other rotator cuff muscles, the deltoid and the muscles controlling the shoulder blade can compensate extremely well.

As a result, many patients can achieve excellent pain relief and function even though the tear remains visible on imaging.

When is surgery more likely to be recommended?

There are several situations where repairing the tendon becomes more attractive.

1. A significant tear following an injury

A traumatic rotator cuff tear is different from a tear that has gradually developed over many years.

For example, if you fall, injure your shoulder and suddenly cannot lift your arm normally, imaging may demonstrate a tendon that has recently torn away from the bone.

In an active patient with a repairable traumatic tear, surgery may be recommended relatively early.

This is particularly important when there has been a significant loss of strength or function.

2. Persistent pain despite appropriate treatment

Many patients initially try non-operative treatment.

If pain continues despite appropriate physiotherapy, activity modification and other treatments, surgery may become reasonable.

There is no precise period that applies to everyone, but persistent symptoms over several months despite appropriate treatment often prompt a discussion about surgical repair.

3. Significant weakness

Pain alone is not the only consideration.

A patient who has lost significant strength — particularly the ability to lift or rotate the arm — may have a more functionally important tear.

This becomes particularly relevant for people who need substantial shoulder strength for work or sport.

4. A large or progressive tear

Rotator cuff tears do not always remain the same size.

Some tears gradually enlarge over time.

As a tear becomes larger, the tendon can retract further away from its original attachment.

The associated muscle may also gradually become smaller and develop fatty degeneration.

These changes matter because they can make a future repair more difficult and, eventually, some tears can become irreparable.

For a younger or active patient with a significant tear, this potential progression may influence the decision to repair the tendon before further deterioration occurs.

What does “retraction” mean?

When a tendon tears away from the bone, it can gradually pull back or retract.

A relatively recent tear may still sit close to its normal attachment.

A longstanding tear may retract much further towards the centre of the shoulder.

The further the tendon has retracted, the more difficult it can sometimes be to bring it back to the bone without excessive tension.

This is one reason why the size and chronicity of a tear matter when considering surgery.

What is fatty degeneration?

When a rotator cuff tendon has been detached for a prolonged period, the muscle attached to that tendon can gradually deteriorate.

The muscle becomes smaller and some of the muscle tissue is replaced by fat.

This is known as fatty degeneration or fatty infiltration.

Unfortunately, advanced muscle degeneration may not completely reverse even if the tendon is subsequently repaired.

This is therefore an important factor when deciding whether a tear should simply be observed or repaired.

Do rotator cuff tears get bigger?

Some do and some do not.

A small tear may remain relatively stable for many years.

Other tears progressively enlarge.

Progression tends to be more concerning when there is already a full-thickness tear, increasing tendon retraction or deterioration of the associated muscles.

This does not mean that every tear needs preventative surgery.

It means that the natural history of the tear should form part of the discussion, particularly in younger and more active patients.

What about partial-thickness tears?

A partial-thickness tear means that only part of the tendon thickness has been damaged.

Many partial tears can be managed without surgery.

Physiotherapy, activity modification and appropriate treatment of pain are usually reasonable initial options.

Surgery becomes more relevant when a substantial portion of the tendon is involved and symptoms persist despite appropriate non-operative treatment.

Even then, the decision depends on the patient’s symptoms and functional requirements rather than the scan alone.

Does age matter?

Yes, but there is no strict age cut-off.

Rotator cuff tears become increasingly common with age.

In an older patient with a longstanding degenerative tear, good shoulder function and manageable symptoms, there may be very little reason to operate simply because a tear is present.

In contrast, a large traumatic tear in an active patient with sudden loss of strength may warrant a very different approach.

Age therefore needs to be considered alongside:

• Activity level
• General health
• Tear size
• Tendon quality
• Muscle quality
• Strength
• Symptoms
• The likelihood of successful healing

If I wait, will the tear become irreparable?

Not necessarily.

Many patients can safely undergo a period of non-operative treatment.

However, some tears do progress over time.

This is why the decision is different for every patient.

If a tear has characteristics that make progression particularly concerning, your surgeon may recommend either earlier repair or monitoring with clinical review and sometimes repeat imaging.

The aim is to avoid unnecessary surgery while also recognising situations where waiting too long could reduce the chance of a successful future repair.

What does rotator cuff repair involve?

Rotator cuff repair is usually performed using keyhole surgery.

The torn tendon is mobilised and returned to its attachment on the humeral head.

Small anchors containing strong sutures are placed into the bone, allowing the tendon to be securely repaired.

The operation puts the tendon back in the correct position, but the body still needs to biologically heal the tendon back onto the bone.

This is why recovery takes several months.

Does every repaired rotator cuff tendon heal?

No.

Unfortunately, even a technically successful repair does not guarantee that the tendon will heal.

Healing depends on several factors, including:

• Tear size
• Tendon retraction
• Muscle atrophy and fatty degeneration
• Tendon quality
• Age
• Smoking
• Diabetes and other health factors
• Bone quality
• Whether the operation is a primary or revision repair

Small tears with good-quality tendon generally have a much better chance of healing than large, chronic and retracted tears.

This likelihood of healing is an important part of deciding whether surgery is worthwhile.

What happens if I choose not to have surgery?

For many patients, nothing dramatic happens.

The shoulder may become comfortable with physiotherapy and activity modification and continue functioning well for many years.

For others, symptoms persist or the tear gradually progresses.

The important thing is that choosing non-operative treatment does not mean ignoring the problem.

If you develop increasing weakness, worsening pain or declining shoulder function, the situation can be reassessed.

So, how do I decide?

Rather than simply asking:

“Is my rotator cuff torn?”

it is more useful to ask:

“Is this a rotator cuff tear that would benefit from being repaired?”

That decision considers:

• How much pain you have
• Whether you have significant weakness
• Whether the tear was traumatic or degenerative
• The size of the tear
• How far the tendon has retracted
• The condition of the muscle
• Your age
• Your work and sporting requirements
• Whether symptoms have improved with physiotherapy
• The likelihood that the tendon will successfully heal after surgery

The bottom line

No — not all rotator cuff tears need surgery.

Many people can achieve excellent pain relief and function without having their tendon repaired.

Surgery becomes more attractive when there is a significant traumatic tear, persistent pain despite appropriate treatment, substantial weakness, a large or progressive tear, or concern that delaying treatment may make a future repair less reliable.

Most importantly, the decision should not be based on the MRI alone.

The aim is not simply to repair every torn tendon.

It is to identify which tears are likely to benefit from surgery, which can be safely managed without surgery, and which patients are most likely to achieve a meaningful improvement from a repair.

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