Shoulder Surgery

Anatomic (Conventional) Shoulder Replacement Surgery

Replacing the damaged shoulder joint using a natural ball-and-socket design

Anatomic shoulder replacement surgery is a procedure used to replace the damaged ball and socket of the shoulder joint with a conventional anatomic implant. This surgical approach is designed to closely replicate the shoulder’s natural structure and biomechanics. It may be recommended when conditions such as advanced shoulder arthritis or severe joint degeneration are causing persistent pain, stiffness, or loss of movement that has not improved with appropriate non-surgical care.

Unlike reverse shoulder replacement, an anatomic shoulder replacement preserves the normal orientation of the shoulder joint. The humeral head (ball) is replaced with a smooth metal implant, and the glenoid (socket) is resurfaced with a polyethylene component. This design relies both on a healthy, functioning rotator cuff to control movement and provide stability, as well as well preserved bone stock on the socket side (glenoid) to provide a foundation for the implant.

Dr Richard Dallalana is an orthopaedic shoulder surgeon in Melbourne with a focused practice in the assessment and management of complex shoulder conditions, including arthritis, instability, and rotator cuff disease. He performs both anatomic, reverse and partial shoulder replacement procedures, with treatment recommendations tailored to each patient following a thorough clinical assessment.

On this page, you will learn what anatomic shoulder replacement involves, when it may be recommended, 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, goals, and overall shoulder health.

Understanding anatomic shoulder replacement surgery

Anatomic shoulder replacement surgery, also known as anatomic total shoulder arthroplasty, is a procedure performed to treat advanced shoulder joint damage when pain, stiffness, and reduced movement significantly affect quality of life and daily function. The procedure involves replacing the worn or damaged joint surfaces with prosthetic components that are designed to replicate the natural structure and movement of the shoulder.

The shoulder is a ball-and-socket joint formed by the humeral head, which is the rounded top of the upper arm bone, and the glenoid, which is the shallow socket of the shoulder blade. In a healthy shoulder, these joint surfaces are covered with smooth cartilage that allows the joint to move freely and without friction. When cartilage becomes damaged or worn away, the joint surfaces become rough and irregular. This can lead to inflammation, pain, loss of movement, and difficulty performing everyday tasks such as reaching, dressing, lifting, or sleeping comfortably.

An anatomic shoulder replacement is designed to restore the joint by resurfacing both sides of the joint in a way that closely mimics normal shoulder anatomy. During the procedure, the damaged humeral head is replaced with a metal implant that recreates the shape of the natural ball. The glenoid socket is resurfaced with a durable polyethylene component that provides a smooth surface for joint movement. By restoring the joint surfaces, the procedure aims to reduce pain and improve shoulder mobility.

A key requirement for an anatomic shoulder replacement is a functioning rotator cuff. The rotator cuff is a group of muscles and tendons that stabilise the shoulder and control movement. Because an anatomic shoulder replacement relies on these tendons to move and stabilise the joint, the integrity of the rotator cuff plays an important role in determining whether this procedure is appropriate. If the rotator cuff is severely damaged, alternative procedures such as reverse shoulder replacement may be considered.

Anatomic shoulder replacement is most commonly performed for advanced osteoarthritis of the shoulder, but it may also be recommended for inflammatory arthritis, avascular necrosis (lack of blood supply to the humeral head), or joint damage that develops following previous injury or surgery. The decision to proceed with surgery is based on a combination of symptom severity, imaging findings, functional limitations, and response to non-surgical treatment.

The procedure is intended to improve joint comfort and movement, although individual outcomes vary depending on factors such as overall shoulder condition, muscle function, bone quality, and rehabilitation participation. Dr Richard Dallalana performs a thorough assessment to determine whether an anatomic shoulder replacement is suitable and to ensure that surgical planning is tailored to each patient’s anatomy, lifestyle, and functional goals.

Common symptoms that may indicate advanced shoulder arthritis

Advanced shoulder arthritis develops when the cartilage that lines the shoulder joint becomes significantly worn or damaged. As the protective cartilage layer deteriorates, the joint surfaces become rough and inflamed, which can lead to persistent pain, stiffness, and reduced movement. These symptoms often progress gradually and may begin to interfere with daily activities, sleep, work, and recreational pursuits.

One of the most common symptoms of advanced shoulder arthritis is deep, aching pain within the shoulder joint. This pain is often worse with movement, particularly activities that involve lifting the arm overhead, reaching behind the back, or carrying objects. As arthritis progresses, pain may become more constant and may occur even during light activities or at rest.

Many patients also experience progressive stiffness and loss of shoulder mobility. This can make routine tasks such as dressing, washing hair, fastening clothing, or reaching into cupboards increasingly difficult. Some patients notice that the shoulder feels tight or restricted, with a gradual reduction in the ability to lift or rotate the arm.

Night pain is another frequent symptom of advanced shoulder arthritis and is a common reason patients seek specialist assessment. Discomfort may worsen when lying on the affected shoulder or when attempting to sleep, which can significantly impact overall quality of life and fatigue levels.

Weakness may also develop over time. This weakness is often related to pain limiting normal muscle use or changes in shoulder mechanics caused by joint damage. Patients may notice difficulty lifting objects, performing overhead activities, or participating in sport or exercise. In some cases, patients describe grinding, catching, or clicking sensations within the shoulder during movement. These mechanical symptoms may occur when irregular joint surfaces or bone spurs interfere with smooth joint motion.

Symptoms of advanced shoulder arthritis may develop following previous injury, fracture, shoulder instability, or long-standing rotator cuff disease. In other cases, arthritis may develop gradually without a clear triggering event.

If shoulder pain, stiffness, or reduced movement is persistent or progressively worsening, specialist assessment can help determine whether arthritis is present and whether joint replacement surgery may be appropriate. Dr Richard Dallalana performs a comprehensive evaluation to identify the cause of symptoms, assess joint function, and guide treatment recommendations based on individual needs and functional goals.

Conditions that may be treated with anatomic shoulder replacement

Anatomic shoulder replacement surgery is most commonly performed to treat conditions that cause significant damage to the shoulder joint surfaces while the rotator cuff tendons remain functional. Because this procedure relies on the rotator cuff muscles to control and stabilise the joint, careful patient selection is important to support optimal outcomes.

Several shoulder conditions may lead to joint damage severe enough to require anatomic shoulder replacement:

Primary shoulder osteoarthritis

Primary osteoarthritis is the most common reason patients undergo anatomic shoulder replacement. This condition occurs when the cartilage lining the shoulder joint gradually wears away over time. As cartilage is lost, joint surfaces become rough, inflamed, and painful, leading to stiffness and progressive loss of movement. There is often a family history of arthritis. Many people have this type of arthritis in many joints incuding hips, knees, fingers and spine.

Post-traumatic arthritis

Arthritis can develop following previous shoulder injuries, including fractures, dislocations, or ligament injuries. Even when initial injuries heal, damage to cartilage or changes in joint alignment may lead to gradual joint degeneration and long-term pain. Arthritis is very common after many years of playing collision sports.

Inflammatory arthritis

Inflammatory joint conditions such as rheumatoid arthritis can affect the shoulder joint by causing chronic inflammation of the joint lining. Over time, this inflammation may damage cartilage and surrounding structures, leading to joint destruction and functional limitation.

Avascular necrosis of the humeral head

Avascular necrosis occurs when the blood supply to the head of the upper arm bone becomes disrupted, causing the bone to weaken and collapse. As the joint surface deteriorates, pain and stiffness typically develop, and joint replacement may be considered in advanced cases.

For anatomic shoulder replacement to function effectively, the rotator cuff must be capable of stabilising and moving the joint following surgery.

Who may be suitable for anatomic shoulder replacement surgery

Anatomic shoulder replacement surgery may be considered for patients experiencing persistent shoulder pain, stiffness, and loss of movement caused by advanced joint damage when non-surgical treatments are no longer providing adequate relief. The procedure is designed for shoulders where the natural ball-and-socket anatomy can be restored and where the surrounding muscles and tendons remain capable of supporting joint function.

Patients who may be suitable candidates commonly include those who experience significant limitation in daily activities such as dressing, reaching overhead, lifting objects, or sleeping comfortably due to shoulder pain. Symptoms often develop gradually over time but may also occur following injury or fracture.

Anatomic shoulder replacement is typically considered when imaging and clinical findings suggest advanced joint degeneration while the rotator cuff remains structurally intact and functional. The rotator cuff plays a critical role in controlling shoulder movement after surgery, which is why tendon health is an important factor when determining suitability for this procedure.

Factors that may indicate suitability for anatomic shoulder replacement

Several clinical and lifestyle factors are considered when determining whether this procedure may be appropriate, including:

Advanced shoulder osteoarthritis causing persistent pain and stiffness
Rheumatoid arthritis or inflammatory joint conditions affecting shoulder function
Post-traumatic arthritis following previous fractures or instability
Avascular necrosis affecting the humeral head
Preserved or repairable rotator cuff tendons
Reduced shoulder movement affecting quality of life
Failure of non-operative treatments such as physiotherapy, medications, or injections

Patients seeking to return to recreational activities, maintain independence with daily tasks, or reduce chronic pain may benefit from discussing surgical options when symptoms become progressively limiting.

Surgery for Nerve Pain: When Is It Needed?

Surgical treatment for shoulder nerve pain is not required in most cases but may be considered when symptoms do not improve with appropriate non-operative care or when there is evidence of ongoing nerve compromise.

Surgery may be discussed if:

Nerve-related pain significantly interferes with daily activities, work, or sleep
Symptoms persist despite adequate non-surgical treatment
Progressive weakness, numbness, or nerve dysfunction is present
Structural compression of a nerve is identified on imaging

The type of surgery depends on the underlying cause of nerve irritation. This may involve relieving nerve compression, addressing shoulder instability, treating associated labral tears or managing other structural contributors identified during assessment.

A common procedure is direct arthroscopic drainage of a paralabral cyst causing pressure on the suprascapular nerve. The labral tear is either debrided or repaired at the same time. The nerve may be freed further by release of the suprascapular ligament above a small tunnel through which it passes and can be compressed.

Resection of a rib or other surgery to relieve pressure can be successful in thoracic outlet syndrome

Recovery Time and Outlook for Shoulder Nerve Pain

Recovery from shoulder nerve pain varies greatly depending on the underlying cause of nerve irritation, the severity and duration of symptoms, and the type of treatment required. Nerve-related symptoms often improve more gradually than muscle or joint pain, and recovery may take longer even with appropriate management.

Nerve function may not return to normal if pain or other symptoms from compression have been present for a long time and/or significant weakness of the muscles supplied by the nerve or significant loss of skin feeling exists.

Many people experience improvement with a structured treatment plan, which may include activity modification, physiotherapy, and targeted injections or other interventions where appropriate.

Ongoing follow-up and guided rehabilitation play an important role in supporting nerve recovery, restoring function, and reducing the risk of recurrent symptoms.

When to See a Shoulder Specialist for Nerve Pain

You may benefit from specialist review if you experience:

Persistent shoulder pain with numbness or tingling
Radiating pain, numbness or tingling into the arm or hand
Unexplained shoulder or arm weakness with no structural issue in the shoulder
Pain which is particularly constant, rather than movement related
Ongoing symptoms despite initial treatment

Specialist assessment can help clarify the diagnosis and guide the most appropriate treatment pathway.

Seeing a shoulder specialist for nerve-related shoulder pain

Shoulder nerve pain can be complex and may have more than one contributing factor. Dr Richard Dallalana provides specialist assessment of shoulder and nerve-related pain, with a focus on accurate diagnosis, identifying contributing conditions, and developing an individualised management plan. On-referral to other specialists such as a neurologist will be made as needed.