When a Broken Shoulder Is Replaced Rather Than Repaired: Shoulder Prosthesis After Fracture

The fall was ordinary. A patch of wet leaves, a hand that never quite made it out to break the landing, and then a shoulder that would not lift. In the emergency department the X-ray showed the top of the humerus in four pieces. The surgeon used a phrase the family had never heard in the same sentence as the word fracture: a shoulder prosthesis for fracture, meaning an artificial joint fitted where the broken bone used to be.

That conversation happens thousands of times a year, and it tends to arrive suddenly, in a corridor, with an arm in a sling and nobody having slept. People expect a broken bone to be pinned, set or left to knit. Being told that the bone itself will be removed and replaced sounds like a leap.

This explainer walks through why that leap is sometimes the sensible choice, which implants are used, how the weeks afterward usually unfold, and where the honest limits of the evidence sit.

Can they do anything for a fractured shoulder? Yes, and replacement is only one option

The short answer is that almost every broken shoulder can be treated; the real question is how. When people say broken shoulder they usually mean a fracture of the proximal humerus, the ball-shaped top of the upper arm bone that sits in the shallow socket of the shoulder blade. It is one of the most common fractures in older adults, and it typically follows a fall from standing height onto weakened bone, according to the NHS.

Treatment sits on a spectrum. At one end is a sling and a program of gentle, supervised movement, with no operation at all. In the middle sit procedures that keep the patient’s own bone: metal plates and screws, or a rod down the shaft of the humerus. At the far end is replacement, where the fractured head of the bone is removed and a prosthesis takes its place.

What surprises many families is how far along that spectrum the evidence pushes toward doing less. The PROFHER trial, published in JAMA, randomized 250 adults with displaced proximal humeral fractures to surgery or to nonsurgical care and found no meaningful difference in shoulder function or quality of life at two years. That single study reshaped practice. Surgeons now reserve operations, including replacement, for breaks where the anatomy simply will not allow the bone to heal in a workable position.

So a shoulder prosthesis for fracture is not the default answer to a broken shoulder. It is the answer to a particular kind of broken shoulder: too many fragments, too little blood supply, bone too soft to hold a screw. The sections that follow explain how surgeons tell those apart.

What a shoulder prosthesis for fracture actually is, in plain language

Think of the healthy shoulder as a golf ball resting on a tee. The ball is the humeral head; the tee is the glenoid, the shallow cup on the shoulder blade. A prosthesis rebuilds one or both of those parts in metal and medical-grade plastic.

The humeral component has two parts. A stem, shaped roughly like a tapered peg, is fitted down the hollow center of the arm bone. On top of the stem sits either a polished metal ball or, in the reverse design, a cup. The stem is anchored with bone cement or with a rough surface that the patient’s own bone grows into over time; the choice depends on bone quality and surgeon preference, as MedlinePlus describes.

On the socket side, if it is replaced at all, a thin plastic or metal component is fixed to the glenoid with screws or cement. In a fracture case the socket is usually healthy, since the break happened on the arm side, which is why some fracture prostheses replace only the ball.

The part that makes fracture surgery different from routine shoulder replacement is what happens to the tuberosities. These are two bony knobs on the humeral head where the rotator cuff tendons attach; the rotator cuff is the group of four muscles that lifts and rotates the arm. In a bad fracture the tuberosities break off as separate fragments. The surgeon threads heavy sutures through them and ties them back around the stem, hoping they heal to the metal and to each other. Whether they do is one of the biggest factors in how well the arm eventually moves.

Why some broken shoulders cannot simply be fixed with plates and screws

Surgeons prefer to save a patient’s own bone when they can. Three things make that difficult in the proximal humerus, and when several coincide, replacement moves up the list.

The first is fragmentation. Orthopedic surgeons often describe these fractures by the number of major pieces: two, three or four parts. A four-part fracture means the head, both tuberosities and the shaft have all separated. Plates rely on screws gripping solid bone on each side of a break; with the head in fragments there may be nothing solid to grip.

The second is blood supply. The humeral head receives its blood through small vessels that run along the bone’s surface and through the tuberosities. When the head is split away from those attachments, the blood supply can be cut off. Bone that loses its circulation dies, a process called avascular necrosis, and a dead head eventually collapses even if the screws held it perfectly at first. Surgeons weigh the risk of this happening when they see the fracture pattern on a CT scan.

The third is bone quality. Osteoporosis, the thinning of bone that makes it fragile, is the reason most of these fractures happen in the first place. Fixing a plate to osteoporotic bone is like screwing a shelf bracket into crumbling plaster. The hardware can cut out, the screws can push through the joint surface, and the whole construct can fail, requiring a second operation.

None of these is an absolute rule. Skilled surgeons fix many three-part fractures, and some four-part patterns heal with no surgery. The decision is a judgment about probability, made by the treating team with the scan in front of them.

Hemiarthroplasty, anatomic or reverse shoulder replacement for fracture: which prosthesis is used?

Three designs exist, and they differ in one crucial way: which muscles they rely on to lift the arm.

A hemiarthroplasty for shoulder fracture replaces only the ball, leaving the natural socket. An anatomic total shoulder replaces both ball and socket in their natural arrangement. Both depend on the rotator cuff, and therefore on the tuberosities healing, to move the arm.

A reverse shoulder replacement swaps the geometry. A metal ball is fixed to the shoulder blade and a cup sits on top of the arm stem. That shift moves the pivot point so the deltoid, the large muscle over the top of the shoulder, can raise the arm on its own, as Johns Hopkins explains. If the tuberosities fail to heal, the arm still lifts. That is why the reverse design has become the most common shoulder prosthesis for fracture in older adults.

Design	What is replaced	Muscle it relies on	Typical fracture role
Hemiarthroplasty	Ball only	Rotator cuff	Younger patients with good bone and tendons
Anatomic total	Ball and socket	Rotator cuff	Rarely used for acute fracture
Reverse total	Ball and socket, positions swapped	Deltoid	Older adults, poor bone, unreliable cuff

The trade-offs are real. A well-healed hemiarthroplasty can give a more natural feel and better rotation. A reverse implant gives more predictable overhead lift but often less ability to reach behind the back, and it carries its own pattern of complications. Your surgeon’s recommendation reflects your age, bone density, tendon quality and how you use your arm.

Who is usually offered a shoulder prosthesis for fracture, and who is asked to wait

The typical candidate is an older adult, often in their seventies or beyond, with a three- or four-part fracture, thin bone, and a head fragment that the surgeon judges unlikely to survive fixation. Add a pre-existing rotator cuff tear, or a fracture that has also dislocated the head out of the socket, and replacement becomes more likely still.

Younger, active patients with strong bone sit at the opposite end. For them surgeons work hard to save the native head, because a prosthesis placed at fifty may need revision within the patient’s lifetime, and each revision is harder than the last. If replacement is unavoidable in a younger person, a hemiarthroplasty is often preferred so the socket is spared.

Several groups are commonly asked to wait or to consider nonsurgical care. People whose fracture, though displaced, still has the head fragment attached to a tuberosity and a plausible blood supply often do well with a sling and physical therapy; PROFHER supports exactly this approach. People too unwell for anesthesia, those with an active infection anywhere in the body, and those with significant confusion who could not follow movement restrictions are generally steered away from surgery, since a prosthesis that dislocates in the first weeks is worse than a fracture that heals a little crooked.

Timing matters. Fracture replacement is usually performed within the first couple of weeks after injury, while the tuberosity fragments are still mobile enough to reposition. After that window, scarring and early healing make reconstruction harder, and a surgeon may recommend letting the bone heal and reassessing later. Any of these decisions rests with the treating team, who can see details a general article cannot.

What happens during proximal humerus fracture surgery with a prosthesis

The operation is done under general anesthesia, frequently combined with a nerve block, an injection of local anesthetic around the nerves at the base of the neck that numbs the whole arm for many hours afterward. Mayo Clinic describes the combination as standard for shoulder replacement.

You are positioned half-sitting, in what surgeons call the beach-chair position. An incision runs from the front of the shoulder down toward the arm, typically along the line where a shirt seam would sit. The surgeon parts the muscles rather than cutting through them, exposes the fracture, and retrieves the fragments.

The broken head is removed and measured. The tuberosity fragments, with their rotator cuff tendons still attached, are set aside and tagged with sutures. The canal of the humerus is prepared, the stem is trialed for size and height, and the final stem is seated with or without cement. Getting the height right is delicate work: too tall overtightens the deltoid and limits motion, too short leaves the joint loose.

If a reverse design is used, the socket is prepared and the metal ball is fixed to the shoulder blade before the arm component is assembled. The tuberosities are then wrapped around the stem and tied in place, sometimes with bone graft from the discarded head packed underneath to encourage healing.

The joint is tested through a range of motion, the layers are closed, and a sling is applied. Operating time commonly runs one to two hours. Most people spend one to two nights in hospital, though MedlinePlus notes some go home the same day, depending on pain control and how safely they can manage at home.

Shoulder replacement after fracture recovery time: the first six weeks

The first thing many people notice is the sling. Expect to wear it most of the day for roughly the first six weeks, according to Cleveland Clinic, with time out for hygiene and gentle exercises. The sling is not there because the implant is fragile. It protects the sutured tuberosities and the freshly reattached soft tissue while they heal.

Pain is usually most intense in the first few days, once the nerve block wears off, then eases week by week. Your team will prescribe a plan that often layers several classes of medicine, such as anti-inflammatories and short courses of stronger analgesics, alongside ice. Take these exactly as prescribed and raise any concerns with the prescribing clinician rather than adjusting on your own.

Movement begins early but is deliberately limited. In the first weeks a physical therapist typically teaches pendulum exercises, where you lean forward and let the arm swing gently, plus elbow, wrist and hand movements to keep them from stiffening. Active lifting of the arm, pushing up from a chair, and reaching behind the back are usually forbidden during this phase because they stress the healing tuberosities.

Practical adjustments dominate daily life. Sleeping in a recliner or propped on pillows is often more comfortable than lying flat. Button-front shirts, slip-on shoes and a shower stool help. Driving is off the table while the sling is on and until you can react safely with both arms, which your surgeon will judge.

Wound checks and a follow-up X-ray typically fall at around two weeks and again near six weeks. That six-week X-ray is the moment many surgeons look for early signs that the tuberosities are healing to the stem.

Months two to twelve: when strength and reach come back

Once the surgeon is satisfied the tissue has knitted, therapy shifts gears. Between roughly six and twelve weeks you begin active-assisted motion, using your other arm or a pulley to help lift, and then active motion under your own power. Strengthening, with light bands and small weights, usually starts around the three-month mark.

Progress is slow and uneven. Overhead reach, the thing most people miss most, often returns before rotation. Reaching into a back pocket or fastening a bra behind the back can remain difficult, particularly after a reverse replacement, where the geometry limits that movement.

Cleveland Clinic gives six months to a year as the range for full recovery from shoulder replacement, and fracture cases tend to sit toward the longer end because the soft tissue was torn rather than neatly cut. Mayo Clinic similarly frames recovery in months, not weeks.

Be realistic about the finish line. A shoulder prosthesis for fracture aims to restore a comfortable, functional arm for daily life: dressing, cooking, driving, carrying groceries, lifting a grandchild onto a lap. It does not reliably restore the shoulder you had before the fall, and the evidence does not support telling anyone otherwise. Most people report that pain relief arrives first and steadiest, while range and strength plateau somewhere short of the other side.

Bone health deserves attention during this period. Because the fracture almost certainly signals osteoporosis, your team will usually arrange a bone density scan and discuss treatments that slow bone loss. These medicines work over months to years and are a decision for your physician, but starting the conversation early protects the other hip, wrist and spine.

How long does a shoulder prosthesis last?

Longer than most people fear, but not forever. Cleveland Clinic states that most shoulder replacements last fifteen to twenty years, and many go well beyond that. Those figures come mainly from elective replacements for arthritis. Fracture cases are a smaller and more varied group, so the honest answer is that they are expected to behave similarly in terms of the implant itself, while function depends heavily on how the soft tissue healed.

What actually wears out is instructive. The metal stem rarely fails. The plastic bearing surface slowly thins, much as a car tire does. Around a reverse implant, the lower edge of the arm component can rub against the shoulder blade, a phenomenon called scapular notching, which surgeons watch on X-rays over years. Loosening of a component from bone is the other long-term concern, more likely if the bone was poor to begin with.

Age at surgery matters most. Someone who receives a prosthesis at seventy-eight is statistically unlikely to outlive it. Someone at fifty-five may face a revision, a second operation to exchange worn or loose parts, and revisions are technically harder and carry higher complication rates than the first surgery. That arithmetic is exactly why surgeons try to fix rather than replace in younger patients.

You can influence the lifespan modestly. Keeping weight through the arm reasonable, avoiding repetitive heavy overhead loading, treating osteoporosis, and attending periodic X-ray checks, typically every few years once things have settled, all help catch problems while they are still small.

Risks and complications, in neutral terms

Every operation carries risk, and this one has a particular profile worth understanding before you consent.

Infection is the complication surgeons dread most, because an infected prosthesis often cannot be treated with antibiotics alone and may require removal. Mayo Clinic and MedlinePlus both list it among the principal risks of shoulder replacement. Signs include spreading redness, wound drainage, fever and pain that worsens rather than eases.

Dislocation, where the components slip apart, is more common with reverse designs and most likely in the first weeks before the tissues have tightened. Certain arm positions, especially reaching behind the body with the arm turned inward, raise the risk, which is why early restrictions are strict.

Tuberosity failure is specific to fracture cases. If those bony knobs do not heal to the stem, the rotator cuff loses its anchor. With a hemiarthroplasty that can mean a shoulder that is pain-free but cannot be lifted; with a reverse design the deltoid compensates, which is a large part of its appeal.

Nerve injury, most often to the axillary nerve that powers the deltoid, is uncommon but serious. Fracture of the humerus around the stem can occur during or after surgery, particularly in osteoporotic bone. Blood clots in the arm or leg, bleeding, stiffness, and reactions to anesthesia round out the list.

Complication rates vary widely between studies and patient groups, and no single percentage would be honest here. What is fair to say is that older age, diabetes, smoking and poor bone quality each raise risk, and that stopping smoking before surgery is one of the few modifiable factors firmly within a patient’s control.

What can you never do again after shoulder replacement?

Fewer things than the internet suggests, though the list is not empty.

Permanent restrictions usually center on heavy, repetitive loading. Most surgeons advise against repeatedly lifting very heavy weights overhead, contact sports, and activities with a high chance of falling onto the arm. The concern is not that the implant will snap but that the bone around it, already thinned by osteoporosis, may fracture, or that a bearing subjected to years of heavy load will wear faster and loosen sooner.

After a reverse replacement, some specific movements remain limited by the mechanics of the implant rather than by any rule. Reaching far behind the back, tucking in a shirt at the rear, or scratching between the shoulder blades may be difficult indefinitely. Many people adapt with a long-handled sponge or by changing how they dress. Cleveland Clinic notes that swimming, golf, gardening, cycling and light racquet sports are commonly resumed once cleared.

Pushing up from a chair using the operated arm is often restricted for months, and some surgeons prefer patients avoid it permanently to protect the stem. Using a walker or cane through that arm is a related concern to discuss.

Two practical points persist for life. Tell any dentist or surgeon that you have a joint replacement; some patients are advised to take antibiotics before certain procedures, a decision for the prescribing clinician. And expect airport security scanners to notice the metal.

The restrictions are individual. A surgeon who knows how your tuberosities healed and what your bone looks like will give guidance tailored to you, and that guidance overrides any general list.

What people often get wrong about shoulder prostheses after fracture

A broken bone should always be fixed, not replaced. The instinct is understandable, but a head fragment without blood supply will die regardless of how well it is screwed in place. Replacement, in the right case, avoids a second operation later.

Surgery gives a better result than a sling. For many displaced fractures, PROFHER found no difference in function at two years between surgery and nonsurgical treatment. Doing nothing surgical is an evidence-based choice, not a failure of care.

A reverse shoulder is a downgrade. It is a different design with different strengths. For an older patient whose rotator cuff cannot be relied upon, it offers more predictable lift than a hemiarthroplasty, which is why its use has grown.

The implant does the work of recovery. The hardware is in place within two hours. Function is built over months of therapy, and the outcome depends more on how the tuberosities and muscles heal than on the metal.

Once it is in, the shoulder is as good as new. Realistic goals are a comfortable arm for daily life. Some rotation and some overhead strength are usually lost for good, and pretending otherwise sets people up for disappointment.

Prostheses wear out in a few years. Cleveland Clinic cites fifteen to twenty years for most. Age and activity matter more than the calendar.

Osteoporosis is a separate problem. It is the reason the bone broke, and untreated it threatens the hip and spine next. The fracture is a prompt to address bone health, not just the shoulder.

Questions to ask your care team before agreeing to a shoulder prosthesis for fracture

Bring a written list. Fracture conversations happen fast, and the surgeon will not mind being asked to slow down.

• What type of fracture do I have, in terms of how many pieces, and what does that mean for the blood supply to the head?
• Have you considered treating this without surgery? What would you expect my arm to be like in a year if we did?
• Could this be fixed with a plate or a rod instead? Why are you recommending replacement in my case?
• Which design are you proposing, hemiarthroplasty or reverse, and what is the reasoning for me specifically?
• How will you reattach the tuberosities, and what happens to my function if they do not heal?
• What movements will I be forbidden in the first six weeks, and which restrictions are likely to be permanent?
• How many nights should I expect in hospital, and what help will I need at home in the first two weeks?
• When will physical therapy start, how often, and for how long?
• What are the warning signs of infection or dislocation that should bring me back urgently?
• Will you arrange a bone density scan and a discussion about osteoporosis treatment?
• How will the implant be monitored over the years, and how often will I need X-rays?
• If I were your parent, is this the option you would choose, and why?

You are entitled to a second opinion, and to time to think, provided the fracture timing allows. A good team will explain the trade-offs without pressure and will tell you honestly where the evidence is thin.

When to call your doctor after a shoulder prosthesis for fracture

Most of the early recovery is uncomfortable but uneventful. A handful of signs, though, should prompt a same-day call to your surgical team or a visit to urgent care.

Call promptly if you notice fever or chills, redness spreading from the wound, increasing warmth or swelling around the incision, or any fluid, pus or opening along the wound edge. These can signal infection, which is easier to treat the earlier it is caught. A sudden change in the shape of the shoulder, a clunk followed by inability to move the arm, or a sensation that the joint has come apart may indicate dislocation and needs assessment that day.

Seek help urgently for pain that escalates sharply rather than settling, especially if it follows a fall or a jolt, since the bone around the stem can fracture. New numbness, tingling or weakness in the hand or fingers, or a hand that becomes pale, cold or blue, warrants an immediate call. Swelling, tenderness or a cord-like feeling in the arm or calf can indicate a blood clot.

Call emergency services, not the clinic, for chest pain, sudden shortness of breath, coughing up blood, or collapse; these can be signs of a clot traveling to the lungs.

Less urgent but still worth reporting: a shoulder that seems to be losing rather than gaining motion after the third month, persistent night pain that was improving and then returns, or any new grinding or clicking. Your team would rather hear from you about a false alarm than miss a real problem.

Frequently asked questions

Can they do anything for a fractured shoulder if I am in my eighties?

Yes. Age alone does not rule out any treatment. Many displaced fractures in older adults are managed with a sling and physical therapy, with results comparable to surgery at two years in the PROFHER trial. When the fracture is too fragmented or the bone too weak, a prosthesis is an option that is specifically designed for older patients. Your treating team weighs your overall health and goals.

How long does a shoulder prosthesis last after a fracture?

Most shoulder replacements last fifteen to twenty years, according to Cleveland Clinic, and many longer. Those figures come mainly from elective surgery for arthritis; fracture implants are expected to behave similarly, though function depends heavily on how the torn soft tissue heals. Younger, more active patients are more likely to need a revision operation within their lifetime, which is why surgeons try to fix rather than replace in that group.

How much does a prosthetic shoulder cost?

This article does not publish prices, because costs vary so widely with the implant design, hospital stay, anesthesia, therapy and insurance arrangements that any single figure would mislead. The useful step is to ask your care team and insurer for an itemized estimate covering surgery, hospital stay, rehabilitation and follow-up imaging, and to ask what happens financially if a complication or revision arises.

What can you never do again after shoulder replacement?

Permanent restrictions usually involve heavy, repetitive overhead lifting, contact sports and activities with a high risk of falling onto the arm. After a reverse replacement, reaching far behind the back may remain difficult because of the implant geometry. Most everyday activities, along with swimming, golf and cycling, are commonly resumed once cleared. Your surgeon’s individual guidance takes precedence over any general list.

Is reverse shoulder replacement for fracture better than a hemiarthroplasty?

Neither is universally better; they suit different patients. A reverse design gives more predictable overhead lift because the deltoid does the work, which matters when the rotator cuff or the tuberosities cannot be relied upon, as is common in older adults. A hemiarthroplasty preserves the natural socket and can offer better rotation if the tuberosities heal well, making it more attractive in younger patients with good bone.

What is the typical shoulder replacement after fracture recovery time?

Expect a sling for about six weeks, gradual return of active movement between six and twelve weeks, strengthening from around three months, and full recovery somewhere between six months and a year, the range cited by Cleveland Clinic. Fracture cases tend to take longer than elective replacements because the soft tissue was torn rather than cut. Pain relief usually arrives earlier than strength and reach.

Does proximal humerus fracture surgery always mean a replacement?

No. Many fractures that need surgery are fixed with a plate and screws or a rod, preserving the patient’s own bone. Replacement is chosen when the head fragment is likely to lose its blood supply, when there are too many pieces to fix securely, or when osteoporotic bone will not hold screws. The decision rests on the fracture pattern seen on X-ray and CT, and on your bone quality and health.

Will I need physical therapy after a shoulder prosthesis for fracture?

Almost certainly, and it is the part of treatment that most determines your result. Therapy begins gently within days with pendulum swings and hand and elbow exercises, progresses to assisted and then active lifting after the tuberosities have had time to heal, and adds strengthening around three months. Sessions typically continue for several months. Skipping therapy risks a stiff shoulder even when the surgery went perfectly.

Why do surgeons worry about the tuberosities so much?

Because the rotator cuff tendons attach to them. In a bad fracture these bony knobs break away as separate fragments and must be sutured back around the prosthesis. If they heal, the cuff can lift and rotate the arm. If they do not, a hemiarthroplasty may be pain-free but weak, whereas a reverse implant still lifts because the deltoid takes over. Their healing is a key predictor of function.

Should I be treated for osteoporosis after this fracture?

The question is worth raising with your physician at the first follow-up. A proximal humerus fracture from a simple fall is a classic fragility fracture, and it signals a raised risk of hip, wrist and spine fractures. Most guidelines advise a bone density scan and a discussion of treatments that slow bone loss. Whether and what to start is a decision for your prescribing clinician.

References

• MedlinePlus: Shoulder replacement
• Cleveland Clinic: Shoulder replacement
• NHS: Broken arm or wrist

This article is for general information only and is not a substitute for professional medical advice. Please consult a qualified doctor about your individual situation.