Arthrodesis (Joint Fusion)

What this procedure is

Arthrodesis, commonly known as joint fusion, is a surgical procedure used to join two or more bones into one solid piece. When a joint is fused, it can no longer move or bend, but it becomes much more stable and less painful.

During the procedure, a surgeon removes the damaged cartilage—the slippery tissue that normally cushions the ends of your bones. Your clinician may then use hardware such as metal plates, screws, or rods to hold the bones together. Over time, the bones grow together into a single, solid unit.

What it treats or fixes

This procedure is primarily used to treat joints that have become painful, unstable, or damaged. Common reasons for joint fusion include:

• Severe arthritis: This is a condition where the protective cartilage wears down, causing bones to rub together.
• Joint instability: When a joint is too loose or weak to support your weight or movement.
• Post-traumatic injury: Damage from a past accident that has not healed well with other treatments.

By stopping the movement in a damaged joint, the procedure helps eliminate the "bone-on-bone" contact that causes chronic pain. This can help you return to daily activities with more comfort and better stability.

How common it is & where it's done

Joint fusion is a standard surgical option performed by orthopedic surgeons, who are specialists in bones and joints. It is most commonly done on the ankles, feet, fingers, thumbs, and the spine. For example, it is a frequent choice for treating advanced thumb arthritis or severe ankle wear and tear.

The surgery usually takes place in a hospital or an outpatient surgical center. Depending on the joint being treated, your clinician may suggest this procedure if other options—like physical therapy, braces, or injections—have not provided enough relief. While it limits motion in that specific spot, it is a reliable way to provide long-lasting pain relief.

Recovery: What to Expect

Recovery from arthrodesis (joint fusion) takes time because your body needs to grow new bone to join two bones together into one solid piece. Your clinician may ask you to wear a cast, splint, or brace for several weeks to keep the joint completely still while it heals. If the surgery was on your leg or ankle, you might need to use crutches or a walker to keep weight off the area for a while.

Physical therapy is often a helpful part of the recovery process. A therapist can show you how to move safely and help you strengthen the muscles around the fused joint. Following your care team's instructions for rest and activity is the best way to support a smooth recovery.

Risks & Possible Complications

While many people have successful results, all surgeries carry some risks. One possibility is a "non-union," which means the bones do not fuse together as expected. Other risks include minor infections or irritation to the nerves near the surgical site. Your clinician will monitor your progress closely to catch any issues early.

Over the long term, the joints next to the fused area may have to work harder to make up for the lack of movement. This can sometimes lead to wear and tear in those nearby joints, a condition clinicians call "adjacent segment disease." You should contact your clinician if you notice any of the following during your recovery:

• A fever or chills.
• Increased redness or warmth around the incision.
• Pain that does not improve with your prescribed medicine.

Outcomes & Long-Term Results

The primary goal of joint fusion is to provide long-term pain relief and better stability. Because the joint is fused, you will no longer be able to bend or move that specific spot. However, most patients find that the trade-off is worth it because the chronic pain they felt before surgery is significantly reduced.

Many people are able to return to their favorite daily activities and hobbies once they have fully healed. Your clinician can help you understand how the fusion might change the way you move your body and what types of activities are best for your long-term health.

Emotional Support & Reassurance

It is natural to feel a little nervous about having surgery or changing how a joint moves. Remember that healing is a gradual process, and it is okay to take things one day at a time. Your surgical team, nurses, and therapists are there to guide you and answer your questions throughout the journey.

Focusing on your progress, no matter how small, can help you stay positive. Many patients feel a sense of relief as their old joint pain fades away. If you feel overwhelmed, reaching out to your care team for extra guidance or talking with loved ones can provide the reassurance you need as you get back to feeling like yourself.

Why doctors recommend it

Doctors usually suggest arthrodesis (joint fusion) when a joint is severely damaged and other treatments have not provided enough relief. This damage is often caused by advanced arthritis, which wears down the smooth cartilage (the protective tissue on the ends of bones). When this cushioning wears away, bones rub directly against each other, which can cause significant pain and stiffness.

Your clinician may recommend this surgery if you have already tried non-surgical options like physical therapy, specialized braces, or medications without success. It is a common choice for joints that must support a lot of weight, such as the ankle, or for smaller joints that require stability, such as those in the thumb or the spine.

Urgent vs planned treatment

In most cases, joint fusion is a planned, elective procedure. This means it is not an emergency, and you have time to work with your care team to decide if it is the right step for you. Because this surgery permanently joins bones together, it is typically considered after more conservative treatments have been exhausted.

Your clinician may monitor your symptoms over months or even years before suggesting surgery. The decision to move forward usually depends on how much the joint pain is affecting your daily life and whether other treatments, such as injections or activity changes, are no longer helping you stay mobile.

Goals of treatment

The main goal of arthrodesis is to reduce or eliminate chronic pain. By fusing two or more bones into one solid piece, the joint no longer moves. While this means you lose flexibility in that specific spot, it also stops the painful friction of bone rubbing against bone. Success is often measured by how much more comfortable you feel during daily activities.

Other goals of the procedure include:

• Increased stability: Making a joint stronger and more reliable if it has become weak or unstable.
• Better weight-bearing: Helping you stand or walk with less discomfort by creating a solid foundation in the foot or ankle.
• Long-term relief: Providing a permanent solution for joints that are too damaged for a joint replacement or other repairs.

While the fused joint will no longer bend, many patients find that the relief from pain allows them to be more active than they were before the surgery.

Who may benefit

Arthrodesis, commonly known as joint fusion, is a procedure used to treat severe joint damage or arthritis. When the cartilage—the slippery tissue that cushions the ends of bones—wears away, it can cause significant pain and loss of stability. Your clinician may suggest fusion to join two or more bones into one solid piece. This is often a choice for joints in the ankles, feet, thumbs, or spine when other treatments like medication or physical therapy have not provided enough relief.

This surgery is typically considered for those who need a stable, pain-free joint more than they need a full range of motion. By stopping the movement between the damaged bones, the procedure can help you return to daily activities with much less discomfort.

When it may not be the right option

Joint fusion may not be the best choice for everyone. Because the procedure stops the joint from moving, it is permanent. If maintaining a wide range of motion is very important for your work or hobbies, your clinician may discuss alternatives like joint replacement. In a replacement, the damaged joint is swapped for an artificial one that still moves.

Another factor to consider is the health of your nearby joints. When one joint is fused, the joints next to it often have to work harder to make up for the lost movement. This can sometimes lead to "adjacent segment disease," where the neighboring joints wear out faster over time. Your care team will look at your overall bone health and activity level to see if fusion is the safest path for you.

Questions to ask your care team

Deciding on surgery is a big step. It can be helpful to bring a list of questions to your next appointment to help you feel more confident in your choice. You might consider asking:

• How will fusing this joint change the way I perform my daily tasks or exercise?
• Am I a candidate for joint replacement instead of fusion?
• What are the long-term effects on the joints surrounding the fusion site?
• What kind of support or equipment will I need at home during my recovery?
• How long does it typically take for the bones to fully grow together?

In the procedure room

When you arrive, the surgical team will help you get positioned comfortably on the procedure table. The area around the joint being treated will be cleaned and prepared to keep the site sterile. You will see various monitors and equipment nearby, which the team uses to ensure your safety and comfort throughout the process.

High-level steps

The main goal of arthrodesis is to join two bones together to stop painful movement. Your clinician may follow these general steps:

• Removing damaged tissue: The surgeon removes the worn-out cartilage from the ends of the bones. Cartilage is the slippery tissue that usually covers joints, but it can cause pain when it is damaged or thin.
• Positioning the bones: The two bone ends are placed together in a stable, functional position.
• Securing the joint: To hold the bones still while they heal and grow together, the surgeon uses hardware such as metal plates, screws, or rods.
• Adding a graft: In some cases, small pieces of bone (a graft) are placed around the joint to help the bones fuse into one solid piece more quickly.

Anesthesia and pain control

Your care team will use anesthesia so you do not feel pain during the surgery. Depending on the joint being treated, your clinician may use general anesthesia, which puts you into a deep sleep. In other cases, they may use regional anesthesia to numb only the specific limb or area being worked on. You may also receive medication to help you feel relaxed and calm before the procedure begins.

Monitoring and safety steps

Throughout the procedure, a dedicated team monitors your vital signs, including your heart rate, blood pressure, and oxygen levels. This constant check ensures your body is responding well to the anesthesia and the surgery. The surgical team follows strict safety protocols to maintain a sterile environment and protect the surgical site from infection.

Immediately after the procedure

After the surgery is finished, you will be moved to a recovery room where staff will watch you as you wake up. As the anesthesia wears off, you may feel groggy or notice some numbness, pressure, or soreness in the treated area. To protect the new fusion, your clinician may place the joint in a cast, splint, or brace. This keeps the bones from moving so they can begin the healing process properly.

Typical procedure length

The time spent in surgery can vary depending on which joint is being fused and the complexity of the repair. While every patient is different, many joint fusion procedures typically take a few hours to complete. Your surgical team can provide a more specific time estimate based on your specific needs.

Common approaches (open vs minimally invasive)

Surgeons use different methods to reach the damaged joint. The best option often depends on which joint is affected and how severe the damage is.

• Open surgery: This is the traditional approach. The surgeon makes a larger incision (cut) to view the joint directly. This allows them to place plates, screws, or bone grafts precisely. It is often used for complex cases or when the bones need significant realignment.
• Minimally invasive surgery: In some cases, such as with the ankle or sacroiliac (SI) joint, doctors may use smaller incisions. They use a tiny camera (arthroscope) and special instruments to perform the fusion. This approach may lead to less pain and a faster recovery time for some patients.

Not every patient is a candidate for minimally invasive surgery. Your clinician will recommend the approach that offers the best chance for the bones to heal together successfully.

Partial vs total

The goal of arthrodesis is usually to stop painful movement completely by turning two or more bones into one solid unit. For simple joints, like the thumb, the procedure typically involves fusing the entire joint connection so it can bear weight without pain.

In more complex areas, such as the spine, the concept of "partial" or "total" relates to how many levels are treated. A surgeon may fuse only the specific segment causing pain while leaving the surrounding joints mobile. However, fusing one part of the spine can sometimes place extra stress on the joints next to it.

Revision or repeat procedures

While joint fusion is often successful, some patients may need a second operation, known as revision surgery. This might happen if the bones fail to heal together properly (a condition called nonunion) or if the metal hardware used to hold the bones causes irritation.

Revision may also be necessary if problems develop in the area surrounding the fusion. For example, after back surgery, the joints next to the fused section may wear out over time due to increased stress. This is sometimes called adjacent segment disease. Your care team will monitor your recovery to check that the bones are healing as expected.

Tests and imaging that may be done

Before scheduling an arthrodesis, your healthcare team needs to confirm exactly which joint is causing your pain and how damaged it is. They will likely start with a physical exam to check your range of motion and look for signs of swelling or tenderness.

Your clinician may order one or more of the following tests to plan the surgery:

• X-rays: These create images of your bones. They help doctors see the space between joints, bone spurs, or how much cartilage has worn away.
• CT scans or MRIs: These provide more detailed images than X-rays. They allow the surgeon to look closely at the bone structure and surrounding soft tissues.
• Diagnostic injections: If it is not clear exactly which joint is causing your pain (common in back or pelvic pain), a doctor may inject a numbing medicine into a specific spot. If the pain goes away temporarily, it confirms that fusing that specific joint may help.

Medication adjustments

Some medications can increase the risk of bleeding or interact with the anesthesia used during surgery. It is important to give your care team a full list of everything you take, including vitamins and herbal supplements.

Your clinician may ask you to pause certain medicines in the days or weeks leading up to the procedure. These commonly include:

• Blood thinners: Medications that prevent clots are often stopped temporarily to reduce bleeding risks during the operation.
• NSAIDs: Anti-inflammatory drugs like aspirin or ibuprofen may need to be paused.
• Supplements: Certain herbal remedies can also affect bleeding and may need to be stopped.

Only stop taking prescribed medicines if your clinician specifically instructs you to do so.

Day-before and day-of instructions

As your surgery date approaches, the hospital or surgery center will provide specific rules to follow. Following these instructions helps ensure your safety while under anesthesia.

Common preparations include:

• Fasting: You will likely be told not to eat or drink anything after midnight the night before surgery. This keeps your stomach empty for anesthesia.
• Transportation: Because you will be groggy from anesthesia and your joint will be immobilized, you cannot drive yourself home. You must arrange for a friend or family member to pick you up.
• Clothing: Wear loose, comfortable clothing that is easy to put on over a cast, splint, or dressing.
• Arrival time: Plan to arrive early to complete paperwork and get settled before the procedure begins.

General surgical risks

As with any major surgery, joint fusion (arthrodesis) carries some standard risks. Your surgical team takes many precautions to prevent these issues, but it is helpful to be aware of them before your procedure.

Common general risks associated with surgery include:

• Infection: This can occur at the incision site or deeper in the tissue.
• Bleeding or blood clots: Your care team will monitor your circulation closely to manage this risk.
• Nerve or blood vessel injury: There is a small risk of damage to the nerves or vessels near the surgical site, which can cause numbness or weakness.

Procedure-specific complications

Because arthrodesis involves permanently joining bones together, there are specific complications related to how the bones heal and how the body adapts to the change.

• Nonunion: This happens when the cut ends of the bones do not grow together successfully. Smoking or certain medical conditions can increase this risk.
• Malunion: This occurs if the bones heal in a position that is not properly aligned, which might affect function or cause discomfort.
• Stress on nearby joints: When a joint is fused, it no longer moves. This can transfer extra stress to the joints above or below the fusion. Over time, this may lead to arthritis in those adjacent joints.
• Hardware issues: In some cases, the metal plates or screws used to hold the bones in place may cause irritation or need to be removed later.

How complications are treated

Most complications are treatable, especially when caught early during follow-up visits. If an infection occurs, your clinician may prescribe antibiotics to clear it. Pain management strategies are also used to keep you comfortable during recovery.

If the bones do not fuse correctly (nonunion) or if hardware causes persistent pain, your surgeon may recommend a second surgery (revision surgery) to fix the issue. Regular monitoring helps ensure your recovery stays on track.

Pain control medicines

Your clinician may use a variety of medicines to help you stay comfortable after your joint fusion. This often involves a "multimodal" approach, which means using different types of medicine together to target pain in different ways. This can help manage discomfort while reducing the need for stronger medications.

• Acetaminophen: This is a common medicine used to reduce pain and fever.
• NSAIDs: These are non-steroidal anti-inflammatory drugs. Your clinician will decide if these are right for you, as they can sometimes affect how bones heal in the early stages of recovery.
• Prescription pain relievers: For a short time after surgery, your doctor might prescribe stronger medicine to manage more intense discomfort.

Your clinician will tailor this plan to your specific needs. It is important to discuss any history of stomach issues, kidney problems, or allergies, as some pain relievers can affect these organs or cause reactions.

Antibiotics

Preventing infection is a top priority during and after surgery. Your clinician may give you antibiotics, which are medicines that fight bacteria. These are typically started shortly before your surgery begins to ensure they are in your system during the procedure.

In many cases, you will receive these through an IV (a small tube in your vein) while you are in the hospital. You might also be given a short course of antibiotic pills to take at home. Be sure to tell your care team if you have ever had a rash or an allergic reaction to any medicine in the past.

Blood thinners and clot prevention

After a procedure like arthrodesis, especially on the ankle or foot, you may be less mobile for a while. This can increase the risk of blood clots forming in the legs. To help prevent this, your clinician may prescribe blood thinners, also known as anticoagulants.

These medicines help keep your blood from clotting too easily while you are resting and recovering. Your clinician may suggest options ranging from simple aspirin to prescription-strength medications. They will monitor you to ensure the medicine is working safely and will provide instructions on how long you should take them.

Emergency warning signs

After joint fusion surgery, blood clots are a rare but serious risk. A clot that forms in the leg can travel to the lungs, which is a medical emergency. Seek immediate emergency care if you experience:

• Sudden shortness of breath or trouble breathing
• Chest pain
• Severe swelling or pain in your calf or leg that feels different from your surgical pain

Call your surgeon or clinic if…

Your care team will give you specific instructions on when to contact them. Generally, you should call your surgeon if you notice signs of infection or nerve issues. Reach out to your clinic if you have:

• Signs of infection: This may include a fever, chills, or redness and warmth spreading around the incision. Watch for any fluid or pus draining from the wound.
• Nerve changes: Let your doctor know if you feel new numbness, tingling, or a "pins and needles" sensation near the surgical site.
• Uncontrolled pain: Call if your pain medication is not keeping you comfortable or if pain suddenly gets worse.

Expected vs concerning symptoms

Recovery takes time, and it is helpful to know what is part of the normal healing process and what requires attention.

• Most people have: Some swelling and soreness around the joint. Because the goal of arthrodesis is to fuse bones together, you will permanently lose the ability to move that specific joint. This stiffness is expected.
• Call if: You have pain that does not improve with rest or medication. In some cases, the bones may not join together completely (nonunion), or stress may shift to nearby joints. If you have nagging pain that persists long after surgery, your clinician may need to check that the fusion is healing correctly.

Non-surgical treatments

Before suggesting surgery, your clinician may recommend several non-surgical options to manage your symptoms. These treatments focus on reducing inflammation (swelling) and easing pain so you can move more comfortably. In many cases, these conservative treatments are tried for several weeks or months before surgery is discussed.

• Medications: Your clinician may suggest over-the-counter pain relievers or prescription anti-inflammatory drugs to help with joint swelling.
• Splinting or Bracing: Using a support device can help rest the joint and protect it from movements that cause pain. This is common for joints in the hand or ankle.
• Injections: Steroid medications can be injected directly into the joint to provide temporary relief from severe inflammation and pain.
• Physical Therapy: Specific exercises can help strengthen the muscles around the joint, which may take some of the pressure off the damaged area.

Watchful waiting

Watchful waiting is a period where you and your clinician monitor your joint health without starting new or invasive treatments. This is often an option if your symptoms are mild or do not interfere with your daily routine. It allows you to see if the condition stays the same or if it gets worse over time.

During this time, you might make small changes to your daily habits, such as avoiding activities that put too much pressure on the joint. If your pain stays at a manageable level and you can still perform your daily tasks, you may be able to delay surgery for a long time.

When surgery becomes the best option

Surgery is usually considered when non-surgical treatments are no longer providing enough relief. If your pain becomes constant or makes it difficult to perform basic tasks like walking, sleeping, or gripping objects, your clinician may discuss arthrodesis (joint fusion) as a solution.

Arthrodesis is a procedure where two bones are joined together permanently to make them one solid piece. While this stops the joint from moving, it also removes the source of the pain caused by bones rubbing together. This is often the best path forward when the joint is severely worn down by arthritis or a past injury and simpler methods have failed to help you stay active.

Hospital services that commonly perform this surgery

Arthrodesis, or joint fusion, is typically performed in specialized surgical departments. Most often, this surgery takes place within an orthopedic surgery department, which focuses on the musculoskeletal system, including bones, joints, and muscles. Depending on which joint needs treatment, you may also visit departments specializing in hand surgery or podiatry, which is medical care for the foot and ankle.

For fusions involving the spine or the sacroiliac (SI) joint, neurosurgery departments or dedicated spine centers are frequently involved. These departments often work closely with physical medicine and rehabilitation teams to ensure you have a clear plan for recovery before you even enter the operating room.

Patient resources and support services

Successful recovery from joint fusion often requires a team approach. Hospitals usually provide access to physical therapists who help you regain strength and learn how to move safely while your bones heal. If you are having surgery on your hand or wrist, occupational therapists can teach you new ways to perform daily tasks like buttoning a shirt or using a computer.

Other helpful resources may include:

• Pain management clinics: Specialists who help manage discomfort during the healing process using various methods.
• Patient education coordinators: Staff members who provide guides, videos, or classes on what to expect during and after surgery.
• Social workers or case managers: Professionals who help arrange for home medical equipment or temporary home health care if you need extra help at home.

Questions for choosing where to have surgery

Choosing the right facility is an important step in your surgical journey. Your clinician may suggest a hospital based on their specialized equipment or the experience of their surgical teams. You might consider asking the following questions when choosing a location:

• How many procedures of this specific type does the surgical team perform each year?
• Is there a dedicated rehabilitation center on-site or nearby to help with my physical therapy?
• Does the hospital use a multidisciplinary team, meaning surgeons, therapists, and pain specialists all work together on my care?
• What resources are available if I have questions or concerns once I return home?
• Are there patient support groups or educational materials specific to this surgery available to me?

Conditions commonly treated by this procedure

Arthrodesis, also known as joint fusion, is a procedure where a clinician joins two bones together to form one solid piece. This is often used when a joint is severely damaged and other treatments have not provided enough relief. The goal is to reduce pain by stopping the movement in that specific joint.

Conditions that may lead to this procedure include:

• Severe arthritis: This includes osteoarthritis (wear-and-tear) and rheumatoid arthritis, which can break down the cartilage that cushions your joints.
• Joint instability: When a joint is too loose or unstable to support your weight or movement safely.
• Thumb arthritis: Fusion may be used at the base of the thumb to help with grip and pain when other treatments are no longer effective.
• Ankle and foot issues: Severe damage to the ankle joint or the small joints in the foot often responds well to fusion.
• Spinal concerns: This may include issues with the sacroiliac (SI) joint in the lower back if it becomes a source of persistent pain.

Related symptoms people search for

Many people look into joint fusion when they experience long-term discomfort that interferes with their quality of life. These symptoms can vary depending on which joint is affected, but they often involve a loss of function or persistent physical distress.

Common symptoms that may be associated with these conditions include:

• Chronic pain: Deep aching or sharp pain that occurs during movement or even while resting.
• Reduced mobility: Difficulty performing daily tasks, such as walking, climbing stairs, or gripping objects.
• Joint instability: A feeling that the joint is weak, wobbly, or unable to support your body weight.
• Persistent swelling: Inflammation and stiffness around the joint that does not improve with rest or standard medicine.

If you are experiencing these symptoms, your clinician may perform an evaluation to determine the cause and discuss whether a fusion procedure is an appropriate option for your health needs.

Evidence overview

Arthrodesis, commonly known as joint fusion, is a well-established surgical procedure used to treat severe arthritis and joint instability. It is typically recommended when nonsurgical treatments—such as splints, medications, or injections—have failed to relieve pain. The goal of the surgery is to fuse two or more bones together so they heal into a single, solid unit.

By eliminating motion between the bones, the procedure stops the painful rubbing of bone-on-bone. Medical evidence suggests that while fusion permanently reduces flexibility in the treated area, it is generally effective at relieving pain and allowing the joint to bear weight again. This trade-off between lost motion and pain relief is a key discussion point during the planning process.

Safety notes and individualized care

Like all surgeries, joint fusion carries certain risks. Your clinical team will discuss potential complications, which may include infection, nerve injury, or bleeding. A specific concern with fusion is "nonunion," where the bones fail to heal together completely. To lower this risk, clinicians strongly advise patients to stop smoking, as nicotine can interfere with bone healing.

Another consideration is the long-term effect on the rest of the body. Because the fused joint no longer moves, the stress of daily movement may shift to the joints above or below the fusion. Over time, this can sometimes lead to increased wear and tear in those nearby areas, a condition known as adjacent segment disease.

Your care plan will be tailored to your specific needs. Factors that influence your safety and recovery include:

• Overall health: Conditions like diabetes or poor circulation may affect healing.
• Lifestyle: Activity levels and smoking history are reviewed to ensure the best outcome.
• Rehabilitation: Physical therapy is often prescribed to help you adapt to changes in joint flexibility.

Sources used

The content provided here is grounded in patient education materials and clinical information from reputable academic medical centers, specifically the Mayo Clinic. These sources reflect current standards for orthopedic surgery, arthritis management, and post-operative care.