Frozen Shoulder: Symptoms, Stages & Treatment

Frozen shoulder isn’t just ‘a bit of stiffness.’ It’s frustration when you can’t:

• Fasten a bra
• Reach into a cupboard
• Sleep comfortably at night

It’s the slow loss of movement that chips away at your confidence and independence.

As a chiropractor for nearly 20 years, I’ve seen how this condition affects more than just the joint—it affects your daily life. 

The good news… With the right advice, targeted mobility work and a structured recovery plan, frozen shoulder doesn’t have to define your future movement.

When it comes to a frozen shoulder, you cannot rush recovery.

But you can support it properly.

What is Frozen Shoulder?

Frozen shoulder occurs when the capsule surrounding the shoulder joint becomes inflamed and thickened.

This leads to:

• Progressive stiffness
• Loss of movement in multiple directions
• Pain at end range

The key distinction is global restriction.

Even passive movement (when someone else tries to move it) feels blocked.

This is why aggressive stretching often makes early symptoms worse.

Common Frozen Shoulder Symptoms

These are the common symptoms of frozen shoulder that I see in clinic:

• Gradual loss of shoulder movement in ALL directions
• Inability to reach overhead
• Difficulty fastening clothing behind the back
• Discomfort in bed
• Sharp pains in the shoulder joint when overstretched
• A feeling of the joint being stuck

It often develops without a clear injury.

Which makes it confusing — but not unusual.

The Three Phases of Frozen Shoulder

1. Freezing Phase (2-9 months)

Increasing pain and gradual movement loss.

1. Frozen Phase (4-12 months)

Less inflammation, significant stiffness.

1. Thawing Phase (6 to 24 months)

Gradual return of mobility.

Most cases resolve over 12–24 months. I know it’s sometimes difficult to imagine it getting better, but understanding this reduces unnecessary anxiety.

How Frozen Shoulder Differs From Shoulder Impingement

One mistake I see often is shoulder conditions being wrongly diagnosed. 

In particular, impingement syndrome and rotator cuff injuries can sometimes be thought to be a frozen shoulder. 

However, there are some clear differences:

• Frozen shoulder restricts movement in ALL directions .
• Impingement tends to produce pain in specific ranges.
• After the initial freezing phase, frozen shoulder is more ‘stiff’ rather than painful

Wrong diagnosis     =       Wrong management

What Causes Frozen Shoulder?

Frozen shoulder (adhesive capsulitis) is more common in:

• People aged 40–60
• Individuals with diabetes
• Thyroid dysfunction
• After immobilisation

Sometimes there is no obvious trigger.

That unpredictability is part of the condition.

Why Your Daily Environment Matters More Than You Think

Frozen shoulder is not purely caused by load.

But daily positioning can absolutely aggravate it.

If you are working 6–8 hours per day with:

• Unsupported arms
• Rounded shoulders
• Static posture

…you are likely increasing capsular strain repeatedly.

That won’t cause frozen shoulder.

But it can prolong irritation. 

This is where subtle environmental adjustments make a noticeable difference. 

Workstation Setup—the Hidden Costs of Sitting Poorly

The aim is not to “fix” frozen shoulder with equipment.

The aim is to reduce repeated strain while the capsule recovers. 

If you don’t do this, it’s like picking at a scab and wondering why the wound won’t heal.

Ergonomic Chairs (Arm Support Is Not Optional)

If you’re spending 6–8 hours a day at a desk, your chair becomes part of your treatment plan.

For frozen shoulder, the key features matter:

• Adjustable armrests 
• Solid adjustable lumbar support
• Slight recline function (100–110°)
• Stable seat depth
• Comfortable padding you’ll actually tolerate long term

Without proper arm support, your shoulder muscles remain subtly active all day, just holding your arm up. That low-level load can significantly increase end-of-day stiffness and discomfort.

Kitchen table setups might save money upfront — but they often cost you in flare-ups.

This is the chair I recommend to my patients because it ticks all the above boxes, is well built, and holds up over time (View my recommended chair).

If you work full time at a desk, this isn’t a minor detail—it’s daily load management.

Frozen Shoulder Treatment and Exercise Principles

Effective frozen shoulder treatment focuses on:

• Gentle mobility within tolerance
• Avoiding aggressive end-range stretching early
• Gradual strengthening during thawing (e.g. Isometric Internal Rotation and Isometric External Rotation exercises)

With frozen shoulder, the instinct is to protect it—hold it still, avoid using it, brace against impact.

But prolonged guarding can also reinforce stiffness. The shoulder capsule is already tightening. When movement drops further, two things happen:

• The joint loses even more mobility
• The surrounding muscles become weaker and more protective

Gentle regular movement helps:

• Maintain circulation
• Reduce excessive muscle guarding 
• Reminds the nervous system that the shoulder is still required to be of service.

Remember, doing just a little every day will give you the best chance of a quicker recovery. Make sure you follow my exercises “Do’s and Don’ts” carefully.

When to Seek Further Help

Seek assessment if you experience:

• Sudden trauma
• Marked weakness
• Severe, unrelenting pain
• Rapid progression with systemic symptoms such as fatigue and unexplained weight loss
• Uncertainty about diagnosis

Accurate diagnosis ensures appropriate management.

Final Thoughts

Frozen shoulder is restrictive — but predictable.

It is not usually caused by posture.

It is not primarily a tendon issue.

It is a capsular restriction that improves over time. The most important things are to:

• Reduce repeated strain.
• Match exercise effort to phase.
• Stay consistent.

That supports recovery.

Related guides

• Shoulder impingement syndrome – covers a common source of shoulder pain
• Shoulder external rotation – supports rotator cuff strength
• Theraband Internal Rotation — balanced rotator cuff strengthening
• Isometric Shoulder External Rotation — gentle shoulder strengthening without load
• Brügger’s Relief — postural reset to reduce upper body tension
• Floor Angels — opens the chest and improves thoracic mobility

← Back to Shoulder Pain

If you spend long periods at a desk, the height and support of your chair can affect shoulder positioning and load. We’ve reviewed ergonomic office chairs and standing desks from a chiropractor’s perspective — covering what to look for to reduce upper body strain.