Understanding Frozen Shoulder: What’s Happening and How to Get Your Shoulder Back
If your shoulder has become stiff, painful, and harder to move over time, you may be experiencing frozen shoulder (adhesive capsulitis).
Many people describe it as:
- A deep ache that won’t go away
- Difficulty reaching overhead or behind their back
- Pain that interrupts sleep
- A shoulder that feels “locked” or stuck
At Radius Physical + Sports Rehab, we help patients restore motion, reduce pain, and return to normal life with evidence-based treatment for frozen shoulder.
What Is Frozen Shoulder?
Frozen shoulder occurs when the capsule surrounding the shoulder joint becomes inflamed, thickened, and tight. As this tissue stiffens, the shoulder gradually loses both:
- Active motion (what you can move yourself)
- Passive motion (what someone else can move for you)
Unlike a strain or tendon injury, this condition develops slowly and affects the joint’s ability to glide and rotate normally.
Frozen shoulder affects about 2–5% of adults, but risk increases significantly for people with:
- Diabetes
- Thyroid conditions
- Autoimmune disorders
- Recent surgery or injury requiring arm immobilization
Most cases occur between ages 40–65 and are more common in women. Frozen_Shoulder_Blog_Post.docx
The Three Stages of Frozen Shoulder
Frozen shoulder typically progresses over 15–24 months, moving through three phases.
Stage 1: Freezing (0–6 months)
- Increasing pain, especially at end ranges
- Night pain or sleep disruption
- Gradual loss of motion
- Difficulty with daily tasks like reaching, dressing, or seatbelt use
Stage 2: Frozen (6–15 months)
- Pain may improve slightly
- Stiffness becomes the main problem
- Shoulder feels tight or blocked
Stage 3: Thawing (15–24 months)
- Pain continues to decrease
- Motion slowly returns
- Rehab is critical to avoid long-term stiffness
Understanding your stage helps us match treatment to your shoulder’s current tolerance. Frozen_Shoulder_Blog_Post.docx
How Frozen Shoulder Is Diagnosed
There is no single test. Diagnosis is based on:
Typical findings
- Age 40–65
- Gradual onset
- Significant loss of external rotation
- Global stiffness
What we rule out
-
Rotator cuff tears
-
Arthritis
-
Other shoulder injuries
At Radius, your evaluation includes:
- Movement testing
- Strength assessment
- Mobility screening
- Functional limitations
- Review of imaging (if available)
Treatment: Matching Care to Your Shoulder’s Irritability
One of the biggest mistakes with frozen shoulder is doing too much too soon — or not doing enough when the shoulder is ready.
We match treatment intensity to how reactive your tissues are:
The Recovery Process at Radius
Early Phase
- Education (reduces fear and protective guarding)
- Gentle mobility exercises
- Pendulums, wall slides, short stretches
- Prevents further stiffness
Intermediate Phase
- Longer stretching
- Assisted movement with tools (cane, pulleys)
- Moderate joint mobilization
- Gradual motion gains
Advanced Phase
- Rotator cuff and shoulder strengthening
- Functional movement training
- Return to work, lifting, or sport
Our goal isn’t just motion — it’s confidence and function.
In the chronic, stiffness-dominant stage, shockwave therapy can be a helpful addition when progress stalls.
Why Early Treatment Matters
Without guided rehab, frozen shoulder can lead to:
- Long-term stiffness
- Loss of strength
- Compensation patterns
- Delayed recovery
Early evaluation helps:
- Confirm the diagnosis
- Set realistic expectations
- Prevent unnecessary imaging or procedures
- Start the right plan for your stage
Frequently Asked Questions
Common questions about frozen shoulder.
What is frozen shoulder (adhesive capsulitis)?
Frozen shoulder, also called adhesive capsulitis, is a condition in which the connective-tissue capsule surrounding the shoulder joint becomes inflamed, fibrotic, and contracted. This causes progressive, painful loss of shoulder movement — affecting both active motion (what you move yourself) and passive motion (what someone else moves for you). It affects roughly 2% to 5% of the general population, occurs more often in women, and most commonly develops in people between about 40 and 60 years old.
What are the symptoms of frozen shoulder, and how do they change as it progresses?
Frozen shoulder usually causes shoulder pain and progressive stiffness, with range-of-motion loss that typically starts with external rotation. It generally moves through three stages: a "freezing" stage with increasing pain and gradually restricted motion (often lasting around 2 to 9 months), a "frozen" stage where pain may lessen but stiffness dominates (often 4 to 12 months), and a "thawing" stage in which motion slowly returns. The whole process can persist from a few months to about 2 to 3 years.
What causes frozen shoulder, and who is most at risk?
The exact cause of frozen shoulder is not fully understood, but it involves inflammation, fibrosis, and contracture of the shoulder joint capsule. Risk is higher in people with diabetes, thyroid disorders, and other endocrine or autoimmune conditions. It can also develop after a shoulder has been immobilized — for example following surgery, a fracture, or another injury. It most commonly affects adults between about 40 and 60 years old and occurs more often in women than men.
How long does frozen shoulder take to recover, and does it resolve on its own?
Frozen shoulder is generally described as a self-limiting condition that tends to get better over time, though recovery is slow and variable. Symptoms can persist from a few months to about 2 to 3 years, and full or near-full recovery may take up to roughly 3 years. Roughly 80% of patients regain near-normal or normal shoulder function with proper treatment. Because the timeline varies widely from person to person, individual recovery may be faster or slower.
What treatment options help with frozen shoulder?
Most frozen shoulder is managed without surgery. Physical therapy — including range-of-motion and stretching exercises plus hands-on manual therapy — is considered a cornerstone of treatment, often alongside NSAIDs and, in some cases, corticosteroid injections to help control pain. When stiffness persists despite conservative care, procedures such as manipulation under anesthesia or arthroscopic capsular release may be considered. The condition generally improves over time, and most people recover without surgery.
Can physical therapy or exercise help frozen shoulder, and is it ever harmful to push the stiff shoulder?
Physical therapy can help restore movement so you can return to daily activities, using range-of-motion exercises, manual therapy, and a home-exercise program. However, intensity should match the stage and symptoms: during the early, painful stage, being overly aggressive with stretching may make shoulder pain worse, so therapists generally start gently and progress to more intense stretching and strengthening as the shoulder allows. This is general information, not a personal exercise plan.
When should I see a clinician about a stiff, painful shoulder, and what warning signs warrant evaluation?
See a clinician if your shoulder is becoming progressively stiff and painful, since earlier evaluation can confirm the diagnosis and guide treatment. Certain signs warrant further medical evaluation because they may suggest a problem other than frozen shoulder — these include worsening symptoms, new-onset weakness, or numbness in the arm. A clinical exam typically tests both active and passive range of motion, and imaging may be used to rule out other causes.
Can frozen shoulder be prevented, or kept from coming back?
There is no proven way to fully prevent frozen shoulder, and one physical-therapy source notes that no known method of prevention currently exists. That said, reported strategies to reduce risk include restoring shoulder mobility soon after an injury or surgery to limit stiffness, and effectively managing underlying conditions such as diabetes. Starting gentle movement or physical therapy shortly after a shoulder injury may help lower the risk.
The information on this website is general education about musculoskeletal and movement-related conditions. It is not medical advice or a diagnosis, and it cannot tell you what is causing your symptoms. Reading it is not a substitute for an in-person evaluation, and booking a visit does not confirm that your condition is right for our care until a provider has examined you. This information cannot identify every condition, and some urgent problems can feel like musculoskeletal pain. If your symptoms are severe or getting worse, or you are unsure how urgent they are, contact your physician, call 911, or go to the nearest emergency room. When in doubt, seek emergency care.
