Reverse shoulder replacement is a type of shoulder arthroplasty that may be considered when conventional shoulder replacement is not suitable. It is used in cases where there is arthritis combined with rotator cuff damage, complex arthritis with severe bone loss, rotator cuff tearing which can’t be repaired, fractures which can’t be reconstructed, or repeat surgery when existing replacements have failed. Unlike a standard shoulder replacement, this procedure changes the mechanics of the joint to allow other muscles, particularly the deltoid, to help lift and move the arm. This approach facilitates movement with no reliance on rotator cuff tendons.
It was developed in the 1950’s, and used reliably with modern materials from the early 2000’s.
Reverse replacement now is performed with computer assisted surgical planning, individualised 3D-printed surgical instruments, or robotic assistance.
On this page, you will learn what reverse shoulder replacement involves, when it may be considered, how the procedure is performed, and what to expect during recovery and rehabilitation. During your consultation, Dr Dallalana will provide personalised advice based on your symptoms, functional goals, and overall shoulder condition.
On this page, you will learn what reverse shoulder replacement involves, when it may be considered, how the procedure is performed, and what to expect during recovery and rehabilitation. During your consultation, Dr Dallalana will provide personalised advice based on your symptoms, functional goals, and overall shoulder condition.
On this page, you will learn what reverse shoulder replacement involves, when it may be considered, how the procedure is performed, and what to expect during recovery and rehabilitation. During your consultation, Dr Dallalana will provide personalised advice based on your symptoms, functional goals, and overall shoulder condition.
Reverse shoulder replacement is a type of shoulder arthroplasty that may be considered when conventional shoulder replacement is not suitable. It is used in cases where there is arthritis combined with rotator cuff damage, complex arthritis with severe bone loss, rotator cuff tearing which can’t be repaired, fractures which can’t be reconstructed, or repeat surgery when existing replacements have failed.
Unlike a standard shoulder replacement, this procedure changes the mechanics of the joint to allow other muscles, particularly the deltoid, to help lift and move the arm. This approach facilitates movement with no reliance on rotator cuff tendons.
It was developed in the 1950’s, and used reliably with modern materials from the early 2000’s.
Reverse replacement now is performed with computer assisted surgical planning, individualised 3D-printed surgical instruments, or robotic assistance.
Reverse shoulder replacement is a type of shoulder arthroplasty designed to improve shoulder function in patients where the rotator cuff is no longer working effectively. The rotator cuff is a group of muscles and tendons that stabilise the shoulder and allow controlled movement. When these structures are significantly damaged or torn, a conventional (anatomic) shoulder replacement may not provide reliable function.
In a reverse shoulder replacement, the normal ball-and-socket structure of the shoulder joint is reversed. A metal ball component is attached to the shoulder blade (glenoid), and a socket component is placed at the top of the upper arm bone (humerus). This change in joint configuration creates a very stable point of rotation and allows the deltoid muscle alone to perform the role of lifting and moving the arm.
These altered biomechanics can help restore shoulder elevation and improve overall arm function in appropriately selected patients. The procedure is most commonly considered for individuals with conditions such as rotator cuff tear arthropathy (arthritis combined with rotator cuff tearing), severe arthritis where there is bone loss or distortion of the normal shape, irreparable rotator cuff tears with weakness and pain, complex shoulder fractures, or previous shoulder surgeries that have not achieved the desired outcome.
It is the procedure of choice in most circumstances where revision (repeat) surgery is required due to worn out or failed joint replacement. It is the type of replacement performed in most cases where a custom-made component of the shoulder replacement is required.
Reverse shoulder replacement is a well-established surgical option, however it is not suitable for every patient. Careful assessment of your shoulder anatomy, muscle function, bone quality, and overall health is required to determine whether this procedure may be appropriate.
During your consultation, Dr Richard Dallalana will perform a thorough clinical evaluation and review your imaging to understand the underlying cause of your symptoms. He will discuss all available treatment options with you, including non-surgical management where appropriate, and explain whether reverse shoulder replacement may help improve your shoulder function and quality of life.
Discussion will include whether other options such as a conventional (anatomic) shoulder replacement may be a viable alternative.
Reverse shoulder replacement may be considered when shoulder pain and loss of function are significantly affecting your ability to perform everyday activities.
Symptoms can vary depending on the underlying condition but may include:
In more advanced cases, some patients may be unable to actively lift the arm despite having passive movement available. This is sometimes referred to as pseudoparalysis and is often associated with significant rotator cuff dysfunction.
Reverse shoulder replacement may be considered in a range of conditions affecting the shoulder.
These may include:
Suitability depends on a combination of structural findings and functional limitations. This procedure may be considered where:
Alternative treatment approaches may be considered when:
Careful assessment and detailed pre-operative planning play an important role in reverse shoulder replacement surgery. The aim is to understand the structure of your shoulder, the condition of the bone and surrounding muscles, and how these factors may influence both the surgical approach and expected outcomes.
This helps determine how the shoulder is currently functioning and the extent to which the rotator cuff and deltoid muscles are contributing to movement.
Any existing rotator cuff musculature is preserved during reverse replacement as this can contribute towards better function in the final outcome.
Imaging is used to assess the underlying anatomy and guide surgical planning. This may include:
These imaging modalities allow for a comprehensive understanding of both bone and soft tissue integrity, which is particularly important in reverse shoulder replacement, where implant positioning and fixation are key considerations.
A CT scan is almost always performed prior to this surgery. An MRI is not always needed.
Tools to help accurately execute the surgery include:
Pre-operative planning involves determining the size, position, and orientation of the implant components based on your individual anatomy before the actual surgery.
More accurate implantation can reduce complications such as early wear or dislocation and achieve a higher range of motion.
3D computer-based planning of an individual’s shoulder replacement has been standard of care in Dr Dallalana’s practice since 2013, and this was one of the first centres in the world where this was being conducted.
Data from the CT scan is used in a 3D computer design program to create a digital image of the patient’s shoulder on which the surgery is completely performed. From this result, tools are available to guide the surgery so that the position of the prosthesis and the bone cuts are millimetre perfect. They help replicate during the surgery the images of the prosthetic component position created on screen.
These advanced technologies also allow fashioning of shaped bone grafts if required in advanced cases and, are the basis of fully customised prosthetic implant manufacture in very complex cases.
Motion studies of the digital images can predict a patient’s movement range after the surgery.
Each reverse shoulder replacement is planned individually. Factors such as your anatomy, previous surgeries, and the condition of your rotator cuff and bone will influence:
Reverse shoulder replacement and anatomic shoulder replacement are both procedures designed to address shoulder pain and dysfunction however, they are used in different clinical situations and rely on different biomechanics to restore movement.
In an anatomic shoulder replacement, the prosthesis replicates the natural anatomy of the shoulder:
This approach relies on a functioning rotator cuff to stabilise and move the joint.
In contrast, a reverse shoulder replacement changes the orientation of the joint:
This reversed configuration allows the shoulder to function differently, particularly when the rotator cuff is no longer able to perform its role.
The key distinction between the two procedures is how the shoulder generates movement and remains stable.
Without stability of the ball on the socket, a shoulder replacement can’t function properly.
This makes reverse shoulder replacement a more suitable option in cases where the rotator cuff is severely damaged or irreparable.
The shoulder contour is unchanged after an anatomic replacement, while a slight squaring-off of the point of the shoulder where the deltoid muscle sits is noted after reverse replacement. This is not of any consequence and is due to a slight necessary lengthening of the arm.
Anatomic shoulder replacement may be considered when:
Reverse shoulder replacement may be considered when:
This configuration reverses the normal anatomy of the shoulder.
Careful implant selection and positioning are important in supporting functional outcomes and reducing the risk of complications such as instability or wear over time.
On the day of your reverse shoulder replacement, you will be admitted to hospital and prepared for theatre.
This typically includes:
Reverse shoulder replacement is usually performed under a general anaesthetic, often combined with a regional nerve block.
This combination may help reduce discomfort in the early post-operative period and support a more comfortable initial recovery.
Following the procedure, you will be taken to the recovery area where your condition will be closely monitored as you wake from anaesthesia.
You can expect:
Once stable, you will be transferred to your hospital room.
Your hospital stay will vary depending on your progress, but most patients remain in hospital for two nights
During this time:
The aim during this phase is to ensure you are comfortable, medically stable, and confident with early post-operative care before returning home.
Transition to inpatient rehabilitation can be arranged if supports at home are lacking and self-care remains difficult.
It is normal to experience some discomfort following surgery, particularly as the nerve block wears off.
Pain management may include:
Pain levels vary between individuals, and your care team will adjust your pain management plan as needed to support your recovery.
Often the arm is less painful out of the sling, and it is safe to do this from the earliest stages.
In the initial phase after surgery, the focus is on pain control, wound protection and development of initial movement and basic use of the arm.
Rehabilitation focuses on gradually restoring movement and beginning to rebuild strength.
This phase includes:
Rehabilitation progresses to include:
Gradual ongoing improvement in function and general comfort is seen up to 12 months following surgery.
Heavier lifting, repetitive overhead activity, or high-impact use of the shoulder may need to be modified or avoided, depending on your individual circumstances.
In the initial phase after surgery, the focus is on pain control, wound protection and development of initial movement and basic use of the arm
Rehabilitation focuses on gradually restoring movement and beginning to rebuild strength.
This phase includes:
In the later stages of recovery, the aim is to improve strength, coordination, and functional use of the shoulder.
Gradual ongoing improvement in function and general comfort is seen up to 12 months following surgery.
Heavier lifting, repetitive overhead activity, or high-impact use of the shoulder may need to be modified or avoided, depending on your individual circumstances.
Recovery outcomes can be influenced by several factors, including:
Risks associated with most surgical procedures include:
Measures are taken before, during, and after surgery to reduce these risks, including sterile surgical techniques, peri-operative antibiotics, and careful medical assessment.
Reverse shoulder replacement is typically performed under general anaesthesia, often combined with a regional nerve block.
Complications related to anaesthesia are uncommon and are influenced by overall health and medical history. A pre-operative medical assessment is usually undertaken to help optimise your condition prior to surgery.
Specific risks related to anaesthesia or nerve blocks can be discussed with the anaesthetist before or on the day of surgery.
Injury to surrounding nerves is very uncommon but may result in temporary or, rarely, persistent weakness or altered feeling in the arm or hand.
Some patients may experience ongoing stiffness or limitations in shoulder movement despite surgery. Rehabilitation plays an important role in optimising outcomes. Significant limitation is uncommon and usually only when the condition of the shoulder before the surgery was very severe.
While many risks are similar to other joint replacement procedures, some considerations are more specific to reverse shoulder replacement due to the altered biomechanics of the joint.
Compared to anatomic shoulder replacement, reverse shoulder replacement has a higher risk of dislocation, particularly in the early post-operative period. This risk may be reduced by implant positioning, soft tissue balance, and adherence to movement restrictions during recovery.
Over time, implant components may wear out or loosen from the bone. Modern implant designs and materials aim to reduce this risk, however long-term outcomes can depend on factors such as activity levels and bone quality.
The likelihood of complications can vary between individuals and may be influenced by:
Optimising your health prior to surgery and following post-operative guidance may help reduce risk.
You should seek medical review if you experience:
Early assessment allows timely management if complications arise.
For many patients, reverse shoulder replacement may provide meaningful improvements in shoulder function and daily activity when carefully selected.
The decision to proceed with surgery involves balancing the potential benefits with the risks, based on your individual condition.
Dr Dallalana will discuss expected outcomes, potential risks, and alternative treatment options with you to support a considered and informed decision.
Pain relief is reliable, to either a totally pain-free shoulder, or one with a mild ache or a catching sensation in certain positions. Night pain should resolve.
The degree of movement achieved can vary, and while many patients regain excellent elevation and rotation of the arm, full restoration of normal shoulder movement is not always expected. Reaching behind the back is a difficult shoulder movement to regain, and this is not always possible after reverse replacement.
Patients with more complex conditions or previous surgeries may have different expectations compared to those undergoing a more simple procedure.
While many implants function well for many years, some patients may require further surgery in the future due to wear, loosening, or other factors.
Long term data collection in many countries demonstrates that around 5% of patients will require a repeat surgical procedure by 10 years. The vast majority of patients will have a reverse replacement which lasts for 20 years.
Following full recovery, patients are able to return to all normal daily activities, and most recreational activities or sports.
Activities involving heavy lifting, repetitive overhead use, or high-impact forces may need to be modified or avoided to help protect the joint over time. These need to be individually discussed.
Usual review times by Dr Dallalana are at 2 weeks, 3 months and 12 months following surgery.
A thorough assessment of your symptoms, shoulder function, imaging findings, and treatment goals helps determine whether reverse shoulder replacement may be appropriate. This procedure is typically considered when the rotator cuff is not functioning adequately, bone stock is diminished, and other treatments are unlikely to restore shoulder movement.
Anatomic shoulder replacement replicates the natural joint and relies on a functioning rotator cuff for stability and movement.
Reverse shoulder replacement changes the joint mechanics such that it is no longer reliant on a functioning rotator cuff, with stability conferred by a more constrained ball and socket articulation, and movement upwards performed by the deltoid muscle.
Neither procedure is universally better.
They are primarily designed for different shoulder conditions – anatomic for arthritis with an intact rotator cuff, reverse for a deficient rotator cuff or distorted bone structure. The most appropriate option depends on rotator cuff function, bone quality, and individual goals, age and activity levels.
These approaches may help manage symptoms but may not restore function in advanced cases.
In some cases, surgery can be safely delayed while symptoms are managed conservatively. However, progressive muscle changes, joint damage, or stiffness may influence future treatment options. Regular review can help guide the timing of surgery.
Some discomfort is expected after surgery, particularly in the early stages. Pain is managed using a structured approach, often including a nerve block and oral medications. Pain typically improves quite rapidly as healing progresses. Most patients are comfortable by 2 weeks following surgery for daily living.
Hospital stay is usually short, commonly 2 days, depending on your recovery and support at home.
Physiotherapy begins on the first day. Early rehabilitation focuses on gentle, protected movement, with progression guided over time.
Driving is usually resumed once the sling is no longer required and you can safely control the vehicle. This is often around 6 weeks, but timing varies between individuals.
Return to work depends on your role. Sedentary / office work, particularly from home, may be possible within days. Physically demanding roles may require 3 to 6 months of recovery.
Reverse shoulder replacement aims to improve functional movement rather than restore completely normal shoulder motion. Many patients regain the ability to lift the arm high and perform daily activities, although some limitations may remain.
Most patients experience improvement in shoulder function and comfort following surgery. Outcomes vary depending on the underlying condition, muscle function, and adherence to rehabilitation. It is unusual to not experience improvement after reverse replacement. A complication such as infection can reduce overall success of the procedure
This procedure is commonly performed to improve comfort and the ability to perform everyday activities when shoulder function is significantly limited.
Modern implants are designed for long-term use. Longevity varies depending on factors such as activity level, bone quality, and implant positioning. Revision surgery is needed in only around 5% of cases by 10 years. The majority will last 20 years or more.
Most patients do not require additional surgery, although revision procedures may be needed in some cases due to wear, loosening, or complications over time.
Age alone does not determine suitability, however very young and physically active patients will wear the joint out a little more quickly and as such a higher percentage of young patients will require repeat surgery. Reverse shoulder replacement is more commonly performed in older patients but may be considered in selected younger individuals depending on their condition.
Potential risks include infection, instability or dislocation, implant loosening, nerve injury, and fracture. These risks are discussed in detail prior to surgery.
Costs vary depending on hospital, surgeon, prosthesis, anaesthetic, and individual insurance cover. A detailed estimate is provided prior to surgery.
Yes, surgery may be performed as a self-funded procedure in the private system. A detailed cost breakdown, including expected Medicare rebates, is provided in advance.
Consider factors such as:
Implants may occasionally activate scanners. You can inform security if required. A letter can be provided for this.
Travel is generally possible once you are comfortable and able to manage the journey. Travel plans should be discussed to ensure they align with your recovery. After the first few days there is no medical reason not to travel, including by plane. There is no additional risk of blood clots after the first few days.
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