Frozen Shoulder and ACM Frequently Asked Questions

Adhesive capsulitis is a condition in which the shoulder capsule becomes inflamed, thickened and contracted. Adhesive tissue develops around the capsule and restricts the joint, producing pain and a progressive loss of movement. The restriction usually affects several directions rather than one isolated motion.

Frozen shoulder commonly limits forward flexion, lateral abduction, external rotation and internal rotation. Patients may struggle to reach overhead, wash or style their hair, reach behind their back, put on clothing, fasten an undergarment or sleep comfortably on the affected side. External rotation is often one of the most restricted movements.

Yes. Protective muscle guarding can add a muscular restriction around the capsular restriction. Some muscles remain shortened or overactive, while other muscles become inhibited or weakened after pain and prolonged loss of movement. Published research has identified muscle guarding as a contributor to range-of-motion loss in patients with frozen shoulder. ACM assesses and treats this muscular component as part of the complete program.

Yes. Frozen shoulder is evaluated through the complete clinical picture, including the patient’s history, pattern of restricted movement, physical assessment and imaging. X-ray, ultrasound and MRI help identify findings that support adhesive capsulitis and rule out other conditions that can restrict the shoulder. The clinical team reviews the actual findings rather than relying only on the diagnostic wording in the report.

Some frozen shoulders improve gradually over months or years, while others remain painful or restricted for much longer. Recovery time and the amount of movement that returns vary considerably. Prolonged loss of movement can also lead to muscle weakness, atrophy and reduced function. A clinical assessment helps determine whether continued observation, conservative care or an intervention is the most appropriate pathway.

Gentle movement and strengthening can help maintain muscle activity and function. The exercise plan should remain within the patient’s appropriate tolerance because forceful stretching that repeatedly produces sharp or shooting pain can aggravate an irritable shoulder. Once a contracted capsule is the principal mechanical restriction, exercise alone may be unable to separate the capsular adhesions. ACM combines treatment of the capsular and muscular restrictions with a structured active rehabilitation program.

Advanced Capsular Mobilization, or ACM, is a coordinated frozen shoulder treatment program for appropriately selected patients with adhesive capsulitis. It combines active range-of-motion measurement, neuromuscular soft-tissue treatment, ultrasound-guided capsular preparation, orthopedic-surgeon-controlled mobilization, monitored IV sedation, immediate guided exercises, overnight rehabilitation, a second neuromuscular treatment on Day 2 and a structured home program with video follow-up.

There is no single treatment that is best for every person or every stage of frozen shoulder. The right option depends on whether the primary problem is inflammation, protective muscle guarding, capsular contracture, another shoulder condition or a combination of factors.

For an appropriately selected patient with true adhesive capsulitis and significant capsular restriction, ACM is our primary and most comprehensive specialist treatment program. The program addresses the restrictions inside the capsule, the muscular guarding surrounding the joint and the intensive rehabilitation needed to translate passive movement into active function.

ACM restores movement without arthroscopy, surgical cutting or incisions through the shoulder tissues. The orthopedic surgeon uses controlled movement, dedicated humeral-head stabilization and vibration-assisted mobilization to progressively separate the internal capsular adhesions. This is why ACM is described as surgery without the surgery.

ACM is a complete peri-procedural program rather than a stand-alone shoulder manipulation. It adds active movement measurement, treatment of the muscular component, controlled capsular preparation, monitored IV sedation that maintains muscular tonicity, dedicated humeral-head stabilization, VibraCussor-assisted adhesion separation, immediate guided movement, overnight rehabilitation, a Day 2 neuromuscular treatment and continued video follow-up.

The orthopedic capsular-mobilization portion is performed by an orthopedic surgeon. The surrounding preparation and rehabilitation are coordinated to convert the movement restored on the operating table into active, functional movement.

The muscular component is a physician-performed neuromuscular soft-tissue treatment that combines resisted movement with targeted treatment of the muscles surrounding the shoulder. It is used to reduce protective guarding, improve muscle activation, strengthen weakened muscles, lengthen shortened or tightened tissues and improve active movement before the capsular portion begins.

The patient’s active range is measured again after this treatment. The change helps the clinical team distinguish how much of the restriction appears muscular and how much remains capsular.

The patient performs each movement independently. For lateral abduction, the patient stands with the back against a wall, the palm facing the thigh and the little finger moving along the wall while raising the arm as far as possible. The movement is recorded on camera and measured with a digital inclinometer. Forward flexion, internal rotation and external rotation are also assessed.

The same active, unassisted method is used before and after the muscular treatment and again during the Day 2 appointment.

A topical anesthetic cream is applied to numb the skin. The physician then performs an ultrasound-guided intra-articular injection using local anesthetic solution. A minute dose of corticosteroid can be included when clinically appropriate.

The solution produces a controlled expansion of the contracted capsule. This places the adhesions under tension and prepares them for the controlled mobilization that follows.

ACM uses controlled, capsule-preserving distension as a preparatory step within a complete peri-procedural program. The injected solution expands the capsule and places the contracted tissue under tension. The procedure then continues to controlled mobilization performed by an orthopedic surgeon, followed by immediate guided movement and rehabilitation.

The capsular injection is therefore one stage of ACM. It works in coordination with the muscular treatment, surgeon-controlled mobilization and structured postoperative rehabilitation. See our detailed ACM vs Hydrodilatation comparison.

The VibraCussor delivers controlled percussive impulses into the tissues surrounding the shoulder. During mobilization, the vibration helps soften tight muscular and fascial tissue, stimulates the muscles and weakens the capsular adhesions. The orthopedic surgeon combines the vibration with controlled movement to help dissect and separate the adhesions progressively through each restricted range.

The doctor of chiropractic and neuromuscular soft-tissue specialist performs the remote movement assessment, muscular treatment and postoperative exercise instruction. An orthopedic surgeon performs the capsular mobilization. An anesthesiologist administers and continuously monitors the IV sedation. Trained procedure and rehabilitation assistants support stabilization, transportation and the prescribed overnight movement schedule.

ACM is scheduled in the morning. The procedure, post-anesthesia monitoring and first guided exercises are generally completed by noon or during the afternoon. The clinical team provides the patient’s confirmed arrival time and treatment-day schedule before the appointment.

The ACM Research and Evidence page presents peer-reviewed studies supporting the clinical principles used throughout the program. These include research on muscle guarding, adhesive-capsulitis imaging, image-guided joint injection, capsule-preserving distension, monitored sedation, shoulder mobilization, early rehabilitation, muscle strength and active range of motion. The complete ACM protocol and sequence are specific to Frozen Shoulder Specialists.

Yes. The initial clinical diagnostic assessment by video is free. A doctor of chiropractic who is also a neuromuscular soft-tissue specialist reviews the patient’s history, available imaging and active shoulder movement.

No. A physician referral is not required to begin the assessment process.

Yes. The initial assessment is completed by video, allowing patients in Canada, the United States and other countries to begin the process from home.

A shoulder X-ray is sufficient to begin the assessment. Upload an ultrasound or MRI when one is already available. The clinic advises the patient when additional imaging is required.

The doctor observes active forward flexion, lateral abduction, external rotation and internal rotation. The patient performs each movement independently so the doctor can evaluate the pattern and degree of restriction.

Frozen shoulder symptoms are generally present for at least four weeks before candidacy is determined. Patients with a previous confirmed frozen shoulder who recognize the same rapid pattern in the opposite shoulder can be assessed earlier. The clinical team reviews the symptom duration together with the movement pattern and imaging.

Yes. Many patients request an ACM assessment after physiotherapy, injections, hydrodilatation or another intervention has not restored sufficient movement. The clinical team reviews what was attempted, the response, the current movement pattern and the imaging to determine whether capsular contracture and muscle guarding remain treatable components.

Yes. Patients with diabetes can be assessed for ACM. Diabetes is included in the medical review, anesthesia assessment and individualized treatment planning.

Yes. Patients with rotator-cuff findings, mild or moderate arthritis, or previous shoulder surgery can be assessed for ACM. The clinical team reviews the severity of each condition, its contribution to the restriction and whether ACM can safely address the frozen-shoulder component.

ACM candidacy requires an acceptable level of bone strength, shoulder stability, muscle control, medical fitness for IV sedation and ability to complete the rehabilitation program. Severe osteoporosis, substantial instability or laxity, severe bone-on-bone arthritis, joint fusion, fracture, major structural injury, mechanical obstruction, paralysis, significant loss of muscle control, frailty or an unacceptable anesthesia risk can lead the team to recommend another pathway.

The orthopedic and anesthesia teams review the risks associated with IV sedation and controlled shoulder mobilization. These include anesthesia complications, fracture, dislocation, injury to soft-tissue or nerve structures, postoperative pain and loss of restored movement. Patient selection, imaging review, preserved muscular tonicity, progressive end-range feedback, direct humeral-head stabilization and immediate rehabilitation are incorporated into the ACM pathway to mitigate these risks.

The available pathways can include activity modification, medication, corticosteroid injection, physiotherapy, hydrodilatation, manipulation under anesthesia, arthroscopic capsular release, shoulder embolization and continued observation for natural recovery. The appropriate option depends on the stage of the condition, the degree of pain and restriction, imaging findings, previous treatment and the patient’s overall health.

Compare each alternative in detail in our complete Frozen Shoulder Treatment Comparison.

The remote assessment determines preliminary suitability. The orthopedic surgeon makes the final clinical candidacy decision after the required in-person assessment and imaging review. The anesthesia team separately confirms clearance for IV sedation. The patient then makes the final decision about proceeding.

The clinical team explains which finding prevents ACM candidacy and recommends the appropriate next step. This can include further medical investigation, treatment of the underlying condition or referral for an orthopedic surgical review.

ACM uses local anesthetic inside the shoulder capsule together with monitored IV sedation administered by an anesthesiologist. The patient remains comfortable, breathes independently and maintains muscular tonicity during the procedure. This gives the orthopedic surgeon resistance and end-range feedback while the shoulder is mobilized.

The patient enters a comfortable, sleep-like state, remains unaware of the procedure and has no recollection of the mobilization. The anesthesiologist continuously monitors the patient and controls the IV sedation throughout the procedure.

Post-procedure soreness, stiffness or a tight area near the end of a movement can occur as the shoulder begins working through its newly restored range. Patients commonly describe this as different from the sharp, severe frozen-shoulder pain they experienced before treatment. The clinical team provides pain management during the immediate recovery period and adjusts the exercise pace to the patient’s response.

The shoulder is mobilized through the intended ranges on the operating table. Active movement begins within 30 minutes of waking and is measured again during the Day 2 appointment. Many patients demonstrate substantial active, functional movement during the first two days. Patients with significant muscle weakness, atrophy or another shoulder condition can require additional time to actively control the complete range.

Individual results and recovery times vary.

Passive range is movement created while another person moves the arm. Active range is movement the patient performs independently using their own muscles. ACM measures and documents active, unassisted movement because it shows the functional range the patient can use in daily life.

The muscles and fascia involved in rotation may have remained shortened, weakened or guarded throughout the frozen-shoulder period. The capsule can be open while those tissues still require continued lengthening, strengthening and neuromuscular retraining. The clinical team tracks each direction and adjusts the home program during follow-up.

The orthopedic surgeon progressively moves the shoulder through each restricted direction while a trained procedure assistant maintains direct control of the humeral head within the shoulder joint. Preserved muscular tonicity provides resistance and end-range feedback, and the dedicated humeral-head stabilization keeps the joint positioned throughout the mobilization.

Across more than 23 years of using this stabilization protocol, our clinic has not experienced a shoulder dislocation during the procedure.

The first guided exercises begin within 30 minutes of waking from IV sedation. The neuromuscular soft-tissue specialist guides the patient through active lengthening and strengthening while the patient remains on the recovery bed.

Yes. The first night includes scheduled exercises every hour until 7:00 a.m. A trained overnight rehabilitation assistant attends each session and guides the patient through the prescribed movements.

The neuromuscular soft-tissue specialist performs a second muscular treatment, reassesses the shoulder and measures the patient’s active, unassisted range of motion. The patient also reviews the home lengthening and strengthening program before departure.

The full postoperative program continues for up to twelve weeks:

• Days 1 through 3: Complete the prescribed exercises every hour during the day. Complete them every hour on Night 1, every two hours on Night 2 and every three hours on Night 3.
• Days 4 through 7: Complete eight exercise sessions throughout the day.
• Weeks 2 through 6: Complete four exercise sessions each day.
• Weeks 7 through 12: Complete one or two exercise sessions each day.

The schedule gradually tapers as the patient strengthens the shoulder, maintains the restored range and returns to regular daily activities.

Each session generally takes about five minutes and can take longer depending on the patient, the movement being addressed and the stage of recovery. The lengthening and strengthening techniques require little or no equipment. A wall or another stable surface can support specific movements, and the exercises can be performed at home, at work, in a hotel or while travelling.

The frequent early sessions help preserve the range restored during ACM, help prevent adhesions from redeveloping, lengthen shortened tissues, strengthen weakened muscles and reinforce the restored movement patterns. Repetition teaches the nervous system to recognize the newly restored range as active, usable movement.

The ACM home program is designed for patients to perform independently after receiving direct instruction from the clinical team. Patients complete the exercises throughout their day and receive continued guidance through scheduled video follow-ups, removing the need for multiple in-person physical-therapy appointments each week.

The clinical team conducts weekly video appointments for up to twelve weeks. These appointments review active range of motion, exercise performance, strength, comfort and progress in each movement direction. Follow-up continues even when substantial function returns earlier so the team can guide the final stages of mobility and strengthening.

The shoulder can tighten when the prescribed movement program is not completed consistently. The frequent early exercises, gradually tapering home schedule and weekly video follow-up are designed to maintain the restored range, strengthen weakened muscles and prevent adhesions from redeveloping. The clinical team reviews any renewed stiffness or loss of movement and adjusts the recovery program.

Many patients resume normal daily activities and work during the first week, commonly from Day 4 onward, while continuing the prescribed exercises throughout the day. The timing depends on the patient’s progress, type of work, comfort, strength and any associated shoulder conditions.

Individual activity timelines vary.

See details on the Day 2 appointment and the first guided exercises.

ACM is performed at our private hospital in Toronto, Ontario, Canada. The hospital name and the patient’s complete location and arrival information are provided during scheduling.

The typical Toronto sequence includes assessment and imaging before the procedure, ACM on Procedure Day and the postoperative appointment on Day 2. Patients can travel home after completing the Day 2 appointment. The clinic provides the confirmed schedule before travel is booked.

Patients can travel alone because the ACM program includes transportation after the procedure, hourly overnight exercise assistance and access to the clinical team during the immediate recovery period. A companion is welcome and can provide additional comfort and travel support.

Yes. Patients can drive or fly home after completing the Day 2 postoperative appointment. This visit consists of the second muscular treatment, active range-of-motion assessment and home-program review; no sedation is involved.

The clinic helps patients access a corporate rate at a nearby hotel and coordinates the post-procedure transfer from the hospital to the hotel. The team also assists with travel and airport-transfer planning so the patient understands the complete itinerary before arrival.

Program fees are individualized and discussed privately after the patient’s information has been reviewed. Before the patient decides whether to proceed, the team explains the complete fee, the included clinical services and medications, transportation support and any separate travel expenses. Hotel accommodation is separate from the program fee.

Insurance reimbursement may be available depending on the patient’s plan, jurisdiction and eligible services. The clinic discusses possible coverage case by case and provides the available documentation for the patient to submit to the insurer. The insurer and the patient’s specific plan determine the final reimbursement.

Learn more about Toronto travel, program fees and insurance reimbursement.