Loss of shoulder mobility can make everyday activities as simple as dressing, combing hair, sleeping on that side, or reaching for objects difficult. Conditions that can cause this limitation include frozen shoulder and adhesive capsulitis.
This condition typically combines pain and progressive stiffness and can be confused with other shoulder problems. Therefore, a proper evaluation is important to confirm the diagnosis and determine the most appropriate treatment at each stage.
The recovery process can be slow and varies considerably from person to person. Although many patients improve gradually, the process can take months and requires tailoring pain management, exercises, and other treatment options to the individual situation.
What is frozen shoulder or adhesive capsulitis?
The frozen shoulder, Adhesive capsulitis, also known as joint capsule obstruction, is a condition characterized by pain and a progressive loss of movement in the shoulder joint. Changes occur in the joint capsule, which may thicken, become fibrous, and contract, reducing the space and elasticity needed for the joint to move normally.
In some patients, it appears without a clearly identifiable cause, a condition commonly known as primary adhesive capsulitis. In other cases, it may appear after an injury, surgery, or a prolonged period of shoulder immobilization.
How changes in the joint capsule limit movement
The joint capsule is a tissue that surrounds and helps stabilize the shoulder joint. During the progression of adhesive capsulitis, inflammation, thickening, and fibrosis of this structure can occur, gradually reducing its elasticity.
As a result, both active mobility (that performed by the patient) and passive mobility (that achieved by the specialist by moving the arm during the examination) are limited. External rotation is usually one of the movements particularly affected.
What factors increase the risk of developing a frozen shoulder?
It is not always possible to determine why adhesive capsulitis occurs. However, several factors associated with an increased risk have been described:
- Diabetes.
- Thyroid disorders.
- Prolonged immobilization of the shoulder following an injury, fracture, or surgery.
- History of frozen shoulder in the opposite shoulder.
- Middle age.
- Female sex.
Recent clinical guidelines also describe an association with other metabolic factors, although the presence of any of them does not necessarily mean that a person will develop the disease. See the 2025 clinical guidelines on the diagnosis and treatment of frozen shoulder.
Differences between frozen shoulder, tendinopathy, and rotator cuff tear
Although they can cause pain and difficulty moving the arm, these are different problems:
- Frozen shoulder: It is characterized by a progressive loss of both active and passive mobility, usually accompanied by pain and stiffness.
- Shoulder tendinopathy: Pain is usually related to certain movements or loads, but passive mobility may be better preserved.
- Rotator cuff rupture: It can cause pain, weakness, and difficulty raising the arm. Examination and, when indicated, imaging tests help differentiate it from adhesive capsulitis. You can find more information about it here. rotator cuff rupture.
What symptoms does frozen shoulder cause?
Symptoms usually appear gradually and can change as the disease progresses. The most common symptoms include:
- Shoulder pain, which can sometimes extend into the arm.
- Progressive stiffness of the joint.
- Difficulty raising or rotating the arm.
- Limitation in performing activities such as dressing, combing hair, or reaching behind the back.
- Nighttime discomfort or difficulty sleeping on the affected shoulder.
- Progressive loss of mobility even when another person tries to move the arm.
If pain is affecting your daily life, we can help.
We evaluate your case, perform tests if necessary, and propose a personalized plan.
Talk to a specialistNighttime pain and progressive stiffness
The pain may be most intense at first and worsen at night or with sudden movements. As stiffness increases, actions that were previously easy may become increasingly difficult.
Simultaneous limitation of active and passive movements is an important clinical finding. However, night pain alone is not sufficient to diagnose adhesive capsulitis, as it can also occur in other shoulder conditions.
Freezing, stiffening, and recovery phases
The progression of frozen shoulder is traditionally described in three phases. This model is useful for understanding the process, although not all patients go through perfectly defined stages or progress at the same rate:
- Freezing phase: The pain usually increases and the range of motion begins to decrease.
- Rigidity phase: The limitation of movement may become more evident, while the pain may remain or begin to decrease.
- Recovery phase: Mobility may gradually improve and discomfort may progressively decrease.
For this reason, treatment should not be based solely on a theoretical phase, but on the pain, stiffness, functional capacity and actual evolution of each patient.
How is adhesive capsulitis diagnosed?
The diagnosis of frozen shoulder is primarily clinical. The specialist assesses the symptoms, medical history, and range of motion of the shoulder to check for the characteristic stiffness pattern.
Imaging tests can help rule out other causes of pain or limitation, but an MRI or ultrasound should not be used alone to establish a diagnosis of adhesive capsulitis.
Exploration of active and passive shoulder mobility
During the examination, the specialist evaluates the movement that the patient can perform on his own and the movement that can be achieved by passively moving his arm.
In frozen shoulder, both modalities are usually limited. Restriction of passive external rotation is especially useful for guiding the diagnosis, although it must be interpreted in conjunction with the rest of the examination.
When are X-rays, ultrasound, or MRI used?
An X-ray can be helpful in ruling out bone problems or glenohumeral osteoarthritis, which can also cause stiffness. Ultrasound or MRI may be considered when symptoms or examination suggest other soft tissue injuries, such as a rotator cuff tear.
Current recommendations consider these tests as complementary tools to clinical assessment and not mandatory tests for all patients with suspected frozen shoulder.
When is it advisable to rule out other causes of pain or stiffness?
Certain signs are not characteristic of isolated adhesive capsulitis and warrant medical evaluation to rule out other causes. These include:
- Intense pain following a major trauma.
- Visible joint deformity.
- Marked weakness or sudden loss of strength.
- Significant redness, local heat, or noticeable swelling.
- Fever associated with shoulder pain.
- Loss of sensation or other neurological symptoms in the arm.
When these symptoms appear acutely or intensely, a priority assessment may be necessary to determine their cause.
What treatments help restore mobility to a frozen shoulder?
The treatment aims to reduce pain, preserve or restore movement, and improve shoulder function. The approach should be tailored to the severity of symptoms, stiffness, clinical stage, associated medical conditions, and response to previous treatments.
Options that can be considered include:
- Education and temporary adaptation of activities.
- Therapeutic exercise and physiotherapy.
- Drug treatment to control pain when indicated.
- Intra-articular infiltration with corticosteroids in selected patients.
- Other interventional techniques, such as hydrodilation, are used in certain cases.
- Surgical treatment when a significant limitation persists despite adequate conservative treatment.
Physiotherapy and exercises adapted to pain and stiffness
Therapeutic exercise and physical therapy can help maintain and gradually restore range of motion. The intensity of the movements should be adjusted to the degree of pain and irritation in the shoulder, avoiding indiscriminately straining a very painful joint.
In addition to improving mobility, the rehabilitation program can progressively work on function and strength as the patient's progress allows. Exercises should be individualized, especially if there are other associated injuries or illnesses.
Pain management and corticosteroid injections
In some patients, analgesics or anti-inflammatories may be used to control discomfort, always taking into account their history and possible contraindications.
Intra-articular corticosteroid injections can improve pain and function, especially at certain stages of the condition. Their use should be determined on an individual basis, taking into account factors such as diabetes.
Current evidence supports a patient-tailored approach that includes combinations of conservative and interventional treatments. British Elbow and Shoulder Society update on frozen shoulder Check out these different alternatives.
Hydrodilation or surgery when the evolution is not satisfactory
In certain cases, hydrodilation may be considered, a procedure designed to relax the joint capsule through injection. It is not necessary in all patients, and its usefulness should be assessed based on the symptoms and the patient's progress.
Surgery is usually reserved for persistent cases that continue to cause significant functional limitations despite appropriate conservative treatment. Specialized options may include manipulation under anesthesia or arthroscopic capsular release.
The need for intervention does not depend solely on the time elapsed. The specialist must consider the progression of the condition, the intensity of stiffness and pain, functional needs, and treatments already performed before considering any intervention.
What is the recovery like for a frozen shoulder?
Recovery is usually gradual and can last for many months. There is no single timeframe that applies to all patients, and some people experience stiffness or symptoms for longer than others.
The goal during recovery is to gradually regain movement and function, while controlling pain and avoiding both prolonged immobilization and excessively aggressive exercises.
What factors can influence evolution
The speed and degree of recovery can vary depending on several factors, including:
- The initial intensity of the pain and stiffness.
- The time elapsed before starting treatment.
- The presence of diabetes or other associated diseases.
- The ability to complete the rehabilitation program.
- The existence of other shoulder injuries.
- The individual response to the treatments used.
For this reason, monitoring allows the treatment to be adapted as the mobility and functional impact of the shoulder changes.
Frequently asked questions about frozen shoulder
Can frozen shoulder improve without surgery?
Yes. Most patients are initially treated without surgery and may experience progressive improvement through pain management, therapeutic exercise, physical therapy, and, in certain cases, injections or other techniques. Surgery is reserved for persistent situations in which significant functional limitations continue despite appropriate conservative treatment.
How long does it take for a frozen shoulder to heal?
There is no exact timeframe. Recovery can take many months and varies considerably from patient to patient. Pain may lessen before full mobility is restored, and some people experience stiffness for longer. Therefore, it is more useful to assess functional progress than to set a specific recovery date.
Is it better to leave the shoulder at rest or try to move it?
Prolonged immobilization can lead to stiffness, but forcing a very painful shoulder is also not recommended. The usual approach is to maintain progressive mobility through exercises adapted to the degree of pain and the clinical stage. The type and intensity of the exercises should be individualized when there is a significant limitation.
Is an MRI necessary to diagnose it?
Not always. The diagnosis is primarily clinical and based on symptoms and the examination of active and passive range of motion. X-rays, ultrasound, or MRI may be used to rule out other conditions when the medical history or examination suggests a different cause.
When might surgery be necessary?
It may be considered in selected cases when stiffness and loss of function persist despite appropriate conservative treatment. The indication is not determined solely by the number of months since onset, but also by the functional impact, pain, response to previous treatments, and the individual characteristics of each patient.
Frozen shoulder can have a prolonged course, but there are various options to manage symptoms and gradually restore function. A correct diagnosis allows it to be distinguished from other conditions and the treatment to be tailored to each individual case. If stiffness or pain is limiting your usual activities, Shoulder Unit at Elgeadi Clinic can perform an individualized assessment and, if needed, you can request an appointment.
