Shoulder replacement is one of the most common joint replacements in the United States, and the procedure has changed dramatically over the past two decades. The introduction of reverse shoulder arthroplasty has expanded who benefits from surgery, particularly older adults with rotator cuff damage. A shoulder replacement resurfaces the ball and socket of the glenohumeral joint with prosthetic components, restoring motion and reducing pain that conservative care can no longer control. Outcomes are generally durable, and modern implants are increasingly reported to last many years, per AAOS OrthoInfo. This guide covers the main types, what the procedure feels like in practice, and how to set realistic expectations for recovery. It is general education, not medical advice — decisions about whether and how to operate belong to you and your orthopedic surgeon.
What Shoulder Replacement Is and Who Needs It
There are two primary types, plus a third used in select cases. Anatomic total shoulder arthroplasty replaces the humeral head with a metal ball and resurfaces the glenoid (socket) with a polyethylene component; it works best when the rotator cuff tendons are intact. Reverse total shoulder arthroplasty inverts the anatomy, placing the ball on the glenoid side and the socket on the humeral side, which allows the deltoid muscle to power motion when the rotator cuff has failed. Hemiarthroplasty, which replaces only the humeral head, is used less often — for example, when the socket is well preserved or in certain fracture situations.
Most candidates have advanced osteoarthritis, rotator cuff arthropathy, or post-traumatic arthritis. Other indications include large irreparable rotator cuff tears with pseudoparalysis, certain proximal humerus fractures in older adults, and inflammatory arthritis. Per Mayo Clinic, surgery is typically considered after a trial of physical therapy, NSAIDs, and corticosteroid injections has plateaued — that is, when severe pain keeps interfering with everyday activities despite non-surgical care. Which procedure fits your situation depends on your rotator cuff status and anatomy, and your orthopedic surgeon makes that call. Background on degenerative joint disease is available in our Medical Conditions guide.
How the Procedure Is Performed
Shoulder replacement is performed under general anesthesia, usually combined with an interscalene nerve block that numbs the shoulder for roughly 12 to 24 hours. The patient is positioned in a beach-chair or lateral decubitus position. The surgeon makes an incision (commonly around 4 to 6 inches) along the front of the shoulder, works between the deltoid and pectoralis, and typically manages the subscapularis tendon to access the joint. The arthritic humeral head is removed, the canal is prepared, and the implant stem is inserted. The glenoid is then prepared and the matching component is implanted.
For reverse arthroplasty, the geometry is reversed, the deltoid is tensioned to power motion, and component positioning is critical to reduce the risk of the implant notching against the scapula. Surgeons manage the subscapularis carefully because tendon healing affects early motion restrictions. Cleveland Clinic and AAOS note the operation commonly takes on the order of two hours, and many patients go home the same day or after a single overnight stay, depending on their health and the surgeon’s protocol.
Preparation and What to Expect on the Day
Preoperative preparation includes medical clearance, lab work, and often imaging such as a CT scan to plan glenoid component positioning. Many surgeons now use 3D planning software and patient-specific guides for precision. You may be asked to stop blood thinners and certain anti-inflammatories on a schedule your care team specifies (do not stop any prescribed medication without their guidance), and to arrange help with dressing and meal preparation for the first several weeks, because you will effectively have one usable arm.
On surgery day, expect a few hours of preoperative work followed by the procedure and a recovery period of several hours. The interscalene block typically wears off later that night or the next morning, and patients are coached to start oral pain medication before that happens so pain does not spike. A sling is fitted before discharge. Gentle pendulum exercises often begin within the first day or two, on your surgeon’s timeline.
Recovery Timeline and Rehab
The first several weeks focus on protecting the subscapularis repair (anatomic) or the deltoid and healing tissues (reverse). Active motion is generally restricted, while passive motion is encouraged with a therapist’s help. The sling is worn for a period your surgeon sets — commonly a few weeks, and often including for sleeping — although many patients find a recliner more comfortable than lying flat. As healing progresses, active-assisted exercises begin and the sling comes off, again on your surgeon’s schedule.
Strengthening typically starts around three months. Most patients regain functional range by roughly four to six months, although recovery and gradual gains continue out to about a year. Anatomic shoulders generally achieve better external rotation and overhead motion, while reverse shoulders restore overhead function in patients with cuff failure but may have somewhat more limited rotation. AAOS reports high patient satisfaction with both procedure types when the indication matches the anatomy. Your own timeline depends on your procedure, tissue quality, and how consistently you complete rehab, so follow your surgeon’s and therapist’s specific instructions rather than a generic schedule.
Risks, Complications, and Outcomes
As with any major surgery, shoulder replacement carries risks, though serious complications are uncommon. Reported complications include infection — where the bacterium Cutibacterium acnes is a recognized and sometimes hard-to-detect cause — nerve injury (most often a temporary axillary nerve neurapraxia), instability or dislocation (relatively more associated with reverse implants), rotator cuff failure after anatomic procedures, periprosthetic fracture, and component loosening or wear over time. Your surgeon can share complication rates specific to your health, your anatomy, and their own case volume, which is more meaningful than a generic average.
When to seek emergency care: Call 911 or go to the nearest emergency room if you experience sudden severe shortness of breath or chest pain (possible pulmonary embolism), heavy bleeding from the incision, fever above about 101°F with wound drainage, sudden inability to move the hand or fingers, or numbness and weakness suggestive of nerve injury.
Alternatives and When Surgery May Not Be Needed
Many shoulder problems improve substantially without replacement. Physical therapy targeting scapular mechanics, posterior capsule stretching, and rotator cuff strengthening helps a wide range of arthritis patterns. NSAIDs, intra-articular corticosteroid injections, and — in some cases — other injectable options provide symptomatic relief. For isolated rotator cuff disease, see our guide on rotator cuff surgery, which often delays or eliminates the need for joint replacement.
Younger patients with mild arthritis sometimes benefit from arthroscopic debridement, biceps tenodesis, or capsular release to buy time. Patients comparing options for the lower body may want to read about knee replacement and hip replacement, since the decision framework — including imaging-symptom correlation and a fair trial of conservative care — is similar. Whether an alternative is right for you is a clinical judgment for your orthopedic surgeon.
Cost Considerations
Costs vary widely by region, facility, implant, and your insurance, so treat any figure as a rough range to verify. Shoulder replacement billed (list) charges commonly land somewhere in the tens of thousands of dollars in the U.S. without insurance, while negotiated and Medicare-allowed amounts are substantially lower. Insured out-of-pocket costs frequently fall in the low thousands after deductibles and coinsurance, depending on your plan. Reverse shoulder implants generally cost more than anatomic ones because of the more complex hardware. Ambulatory surgery centers, where a patient is eligible, have lowered cash prices in some markets. Importantly, shoulder replacement is often covered when it is medically necessary — confirm coverage, prior authorization requirements, and an out-of-pocket estimate with your insurer and surgeon’s office before scheduling. For strategies on shopping surgical pricing, see our healthcare costs guide.
Frequently Asked Questions
Anatomic vs reverse shoulder replacement: which do I need?
The decision depends largely on rotator cuff integrity. Patients with healthy cuffs and primary osteoarthritis usually do well with anatomic replacement, which tends to restore more natural motion. Patients with rotator cuff arthropathy, irreparable cuff tears, or certain proximal humerus fractures are often better served by reverse. Many surgeons finalize the choice during surgery if cuff quality is borderline. Ultimately, your orthopedic surgeon decides based on your imaging and anatomy.
How long does a shoulder replacement last?
Modern shoulder replacements are generally reported to last many years, with a large share still functioning well at 10 to 15 years and beyond; reverse implants have shorter long-term follow-up data but registry results have been increasingly favorable. Younger and more active patients tend to wear implants faster. Ask your surgeon what the current data suggest for your specific implant and activity level.
How long is the sling worn after surgery?
Most patients wear a sling for a period their surgeon sets — commonly a few weeks, often including for sleeping. Active motion usually starts once early healing allows, and driving typically resumes only when strength and range of motion are adequate and you are off opioid pain medication. Follow your surgeon’s specific protocol rather than a fixed number.
Can I lift weights after shoulder replacement?
Light weights are generally permitted once recovery is complete, but heavy weightlifting, contact sports, and repetitive overhead loading are usually discouraged because they can accelerate component wear and, with reverse implants, may increase dislocation risk. Your surgeon will give you activity limits tailored to your implant.
Is shoulder replacement covered by insurance?
It is often covered when medically necessary, but coverage, prior authorization, and your share of the cost depend on your plan. Confirm the details and get an out-of-pocket estimate from your insurer and the surgeon’s office before scheduling.
TL;DR: Shoulder replacement resurfaces the ball-and-socket joint to relieve pain and restore motion after conservative care stops working. The two main procedures are anatomic total shoulder arthroplasty (for an intact rotator cuff) and reverse total shoulder arthroplasty (which lets the deltoid power motion when the cuff has failed); hemiarthroplasty is a third option in select cases. Recovery is gradual — a sling for several weeks, protected motion early, strengthening around three months, and functional range over roughly four to six months, with gains up to a year. Risks are usually low but real (infection, nerve injury, instability, loosening). Which procedure you need depends on your anatomy, and your orthopedic surgeon decides. Cost varies and the surgery is often covered when medically necessary — verify with your insurer. This is general information, not medical advice; see a doctor for guidance on your situation.
What to Discuss With Your Surgeon
Shoulder replacement works best when patient expectations match the realistic capabilities of the chosen implant. Bring questions about your rotator cuff status, the anatomic-versus-reverse choice, expected range of motion, your sling and rehab protocol, and the surgeon’s volume of each procedure type — higher-volume shoulder specialists generally report lower complication rates. If you have not yet exhausted physical therapy and a corticosteroid injection trial, those are reasonable first steps before scheduling surgery. Because every shoulder and every health history is different, use this guide to prepare your questions, and let your orthopedic surgeon direct the decision.
Sources
- AAOS OrthoInfo — Shoulder Joint Replacement
- AAOS OrthoInfo — Recovery After Shoulder Joint Replacement
- Mayo Clinic — Shoulder Surgery
- Cleveland Clinic — Shoulder Replacement
- MedlinePlus — Shoulder Replacement
- CMS/Medicare — payment and coverage context (verify current figures)