Limb Salvage Surgery

Introduction

A diagnosis of a bone or soft tissue tumour in the arm or leg brings two layers of worry at once. The first is about the cancer itself. The second is about the limb — what the surgery will mean for movement, independence, and daily life. For most of the twentieth century, amputation was the standard surgical treatment for aggressive bone cancers. Today, the picture has changed substantially. With modern imaging, improved chemotherapy, custom implants, and refined surgical techniques, the majority of patients with sarcomas of the limbs can be treated with limb salvage surgery — an operation that removes the tumour while preserving the affected arm or leg.

This article is written for patients who have been diagnosed with a bone or soft tissue sarcoma and are now planning surgery, as well as for parents of children facing the same situation. It explains what limb salvage surgery involves, who it is suitable for, the different reconstruction options, what the surgical day and hospital stay look like, the rehabilitation that follows, the risks involved, and what life tends to look like in the months and years after the operation.

What Is Limb Salvage Surgery?

Limb salvage surgery — sometimes called limb-sparing surgery or limb preservation surgery — is an operation that removes a tumour from an arm or leg along with a surrounding margin of healthy tissue, and then reconstructs the area so the limb can continue to function. The reconstruction may use a metal implant (called an endoprosthesis), bone from a donor (an allograft), bone taken from another part of the patient’s own body (an autograft), or a combination of these.

The surgery sits at the intersection of two specialties: orthopaedic surgery and surgical oncology. The surgeon’s task is to achieve two goals at the same time. The first is oncological — to remove the tumour completely, with a margin of healthy tissue around it, so that no cancer is left behind. The second is functional — to reconstruct the bone, joint, and soft tissues in a way that preserves the limb’s ability to move, bear weight, and feel.

Limb salvage surgery is most commonly performed for primary bone cancers and soft tissue sarcomas, but it is also used for metastatic bone tumours (cancers that have spread from elsewhere in the body) and, in selected cases, for severe non-cancerous conditions such as locally aggressive benign tumours or destructive infections of bone.

Why Is Limb Salvage Surgery Performed?

The conditions most commonly treated by limb salvage surgery include:

• Osteosarcoma — the most common primary bone cancer in children and young adults, often arising around the knee, hip, or shoulder.
• Ewing sarcoma — another bone cancer of children and young adults, which can affect the long bones or pelvis.
• Chondrosarcoma — a cartilage-forming tumour usually seen in adults.
• Soft tissue sarcomas — a broad group of cancers arising in muscle, fat, blood vessels, nerves, or connective tissue. Examples include leiomyosarcoma, liposarcoma, synovial sarcoma, and undifferentiated pleomorphic sarcoma.
• Giant cell tumour of bone — a locally aggressive but typically non-cancerous tumour that can destroy bone.
• Metastatic bone disease — tumours that have spread to bone from a primary cancer such as breast, lung, kidney, prostate, or thyroid cancer, particularly when the bone has fractured or is at high risk of fracturing.

The aim in cancer cases is what surgeons call a wide resection: removing the tumour together with a cuff of normal tissue around it, so that the cut edge (the margin) is clear of cancer cells. Clear margins are one of the strongest predictors of local control — that is, of the cancer not coming back in the same area.

Who Is a Candidate for Limb Salvage Surgery?

Several conditions usually need to be met for limb salvage surgery to be a reasonable option:

• The tumour is confined to the limb and has not invaded the body’s core structures.
• The major nerves and blood vessels supplying the limb can be preserved or safely reconstructed.
• Complete removal of the tumour with adequate margins is technically achievable.
• Enough healthy soft tissue (muscle and skin) is available, or can be brought in by reconstructive techniques, to cover the reconstructed area.
• The patient is well enough to tolerate a long operation and the rehabilitation that follows.
• For aggressive sarcomas, the tumour has responded reasonably to chemotherapy given before surgery (where chemotherapy is part of the plan).

Even with modern techniques, amputation may still be the safer or more functional option in some situations. These include tumours that have grown around critical nerves and blood vessels that cannot be reconstructed, very large tumours where adequate margins cannot be obtained without removing essential structures, severe uncontrolled infection in the surgical area, and certain recurrent tumours where previous treatment has compromised the limb. In some children with tumours near growing joints, a specialised procedure called rotationplasty (described later) may be considered as a functional alternative to both standard limb salvage and above-knee amputation.

The decision about whether limb salvage is appropriate is made by a multidisciplinary team that typically includes an orthopaedic oncologist, a medical oncologist, a radiologist, a pathologist, a radiation oncologist where relevant, and a reconstructive or plastic surgeon. Major societies such as NCCN and ESMO recommend that all sarcoma patients be assessed in a specialised sarcoma centre with this kind of team-based review.

Alternatives to Limb Salvage Surgery

For most patients with limb sarcomas, surgery of some form is needed for cure. The realistic alternatives are not usually “surgery versus no surgery”, but different surgical approaches and how they combine with other treatments.

Amputation

Amputation removes the limb at a level above the tumour. It remains an appropriate choice when limb salvage is not safe or when the predicted function after salvage would be worse than the function after amputation with a prosthetic limb. For some tumours of the foot or hand, a partial amputation (such as a ray amputation in the hand or a below-knee amputation) can give very good function. Studies comparing limb salvage and amputation in carefully selected patients have generally shown similar overall survival, with the choice driven by what gives the better functional outcome for that individual.

Rotationplasty

Rotationplasty is a specialised procedure most often used in young children with tumours around the knee. The middle portion of the leg containing the tumour is removed, and the lower leg and foot are rotated 180 degrees and reattached so that the ankle joint takes on the function of a knee. The child then uses a prosthesis below the “new knee.” It can give excellent long-term function and durability, particularly in growing children, and is discussed further in the section on children below.

Definitive radiation therapy

For certain tumour types and locations — particularly Ewing sarcoma in places where surgery would cause major functional loss — radiation therapy alone may be used as the local treatment. This is less common for osteosarcoma, which tends to be relatively resistant to radiation. The choice between surgery and radiation as the local treatment is made by the multidisciplinary team based on tumour type, location, and expected functional outcome.

Systemic therapy alone

Chemotherapy and, more recently, targeted therapies and immunotherapies are central to sarcoma treatment but are not on their own usually curative for localised limb sarcomas. They are almost always combined with local treatment of the tumour, either surgery or radiation.

Surgical Approaches and Reconstruction Options

Limb salvage surgery is typically performed as an open operation because of the precision required to remove the tumour with clear margins and reconstruct the bone and soft tissues. The first part of the operation — the resection — follows the same principles regardless of the reconstruction that will follow. The major differences between approaches are in how the gap left after the tumour is removed is reconstructed.

Endoprosthetic reconstruction

An endoprosthesis is a metal implant designed to replace a segment of bone, often including the adjacent joint. For tumours around the knee, hip, shoulder, or elbow, this often means replacing a portion of the long bone together with the joint itself, using an implant similar in concept to a joint replacement but designed for tumour reconstruction. These implants are sometimes called megaprostheses or modular tumour prostheses.

Endoprosthetic reconstruction allows relatively early movement and weight-bearing, which is helpful for older patients and for those who need to start chemotherapy soon after surgery. Modern implants are designed to last many years, though over a lifetime some patients will need revision surgery for loosening, wear, or infection.

Biological reconstruction with bone graft

Biological reconstruction uses bone — either from a donor (allograft) or from the patient’s own body (autograft) — to fill the gap left by the tumour. Common autograft sources include the fibula (one of the bones of the lower leg) and the iliac crest (part of the pelvis). A vascularised fibula graft, in which the fibula is transferred with its blood vessels intact and reconnected at the new site, can heal into a working segment of bone and remodel over time.

Biological reconstruction can be very durable in the long term because the graft becomes living bone, but it usually involves a longer healing period before full weight-bearing is allowed. It is often favoured in younger patients where decades of function are needed and where the demand on the limb is high.

Allograft-prosthetic composite

An allograft-prosthetic composite combines a donor bone segment with a metal joint implant. It tries to take advantage of both approaches: the donor bone provides a way to reattach tendons and muscles, while the implant provides a reliable joint surface. It is often considered around the shoulder, hip, and proximal tibia (upper shin bone).

Vascularised fibula transfer

For long-bone defects in the arm or for reconstructing parts of the lower leg, a vascularised fibula transfer can be used either alone or together with other reconstructions. The fibula is harvested with its blood vessels and microsurgically reconnected at the recipient site so that the bone arrives with a living blood supply and continues to heal as living bone.

Soft tissue reconstruction

Whatever bone reconstruction is used, removing a large tumour usually also requires removing muscle, skin, and other soft tissues. A reconstructive surgeon may transfer muscle from elsewhere in the body (a muscle flap), use skin grafts, or use specialised techniques to restore coverage and protect the underlying reconstruction. Adequate soft tissue coverage is important both for healing and for protecting against infection.

Preparing for Limb Salvage Surgery

Preparation for limb salvage surgery is unusually thorough because the operation is complex and is part of a larger cancer treatment plan. The pre-operative assessment generally includes:

• Imaging of the tumour: MRI of the affected limb gives detailed information about how far the tumour has spread within the bone and into surrounding tissues, and which nerves and vessels are involved. CT scans add information about bone structure.
• Staging studies: CT of the chest is used to look for spread to the lungs, which is the most common site of metastasis from bone sarcomas. PET-CT or bone scans may be used to look for spread elsewhere.
• Biopsy: A tissue sample is taken and examined by a pathologist to confirm the diagnosis and type of sarcoma. The biopsy is usually planned by the surgical team because the biopsy tract may need to be removed during the definitive surgery.
• Blood tests to assess general health, organ function, and fitness for anaesthesia.
• Cardiac assessment, especially if chemotherapy is part of the plan, because some chemotherapy drugs used in sarcomas can affect the heart.
• Dental review in some cases, as healthy teeth and gums reduce the risk of infection seeding to implants.
• Counselling and consent, which includes an honest conversation about the planned reconstruction, the expected function afterwards, and the possibility that during surgery the team may need to convert to a different approach — including, rarely, amputation — if findings differ from expectations.

For aggressive bone sarcomas such as osteosarcoma and Ewing sarcoma, chemotherapy is usually given before surgery (this is called neoadjuvant chemotherapy). This serves two purposes: it treats any microscopic cancer cells elsewhere in the body, and it can shrink the tumour and make the surgery technically easier. The response of the tumour to neoadjuvant chemotherapy, assessed in the resected specimen, is also an important prognostic indicator.

What Happens During Limb Salvage Surgery

1. Positioning and exposure. The patient is positioned on the operating table to give the surgeon access to the tumour. A surgical incision is planned to allow the tumour, the biopsy tract, and a cuff of surrounding tissue to be removed together.
2. Wide resection. The tumour is removed along with a margin of healthy tissue. The surgical team works carefully around the nerves and blood vessels that need to be preserved. Once the specimen is out, it is sent to the pathologist.
3. Reconstruction. The chosen reconstruction is carried out — placement of an endoprosthesis, securing of a bone graft, or a combination. Muscles and tendons are reattached to restore movement where possible.
4. Soft tissue coverage. If needed, a muscle flap or other reconstructive technique is used to cover the area.
5. Closure and drainage. The wound is closed in layers and drains are usually placed to remove fluid that collects in the days after surgery.

Recovery from limb salvage surgery takes place in phases. The early phase, in hospital, focuses on wound healing, pain control, and the very first steps of rehabilitation. The middle phase, over weeks to a few months, is about regaining safe movement and beginning weight-bearing where applicable. The later phase, over many months, is about building strength, endurance, and function.

In hospital

The hospital stay is commonly around one to two weeks, but varies with the type of surgery, the reconstruction, and the patient’s overall condition. During this time the team monitors the wound, manages pain, watches for early complications, and begins rehabilitation as soon as it is safe. For lower limb surgery, early goals often include sitting up, transferring out of bed, and beginning to move the operated limb under the guidance of a physiotherapist.

Early rehabilitation

Rehabilitation begins almost immediately. For endoprosthetic reconstructions of the lower limb, partial weight-bearing with crutches or a walker is often allowed early, sometimes within days. For biological reconstructions with bone graft, full weight-bearing is usually delayed for several weeks or months to allow the graft to heal. Upper limb reconstructions focus early on range of motion exercises and gradual return of functional movement of the hand and arm.

Rehabilitation milestones

Typical milestones, which vary widely with the procedure and the individual, include:

• First few weeks: wound healing, pain settling, starting basic movements and supervised therapy.
• Around six weeks: increasing range of motion, more confident mobility, often beginning to walk further (for lower limb surgery) with aids.
• Around three months: noticeable improvement in strength and coordination, gradual return to many daily activities.
• Six to twelve months: functional recovery for most patients, with continued gradual gains in strength.
• Beyond a year: ongoing adaptation, particularly for high-demand activities; some patients continue to make gains for two years or more.

Physiotherapy is central throughout this process. For many patients, structured rehabilitation continues for a year or more. Where chemotherapy is given after surgery, rehabilitation has to be balanced against the fatigue and immune effects of treatment, and the plan is coordinated between the surgical, oncology, and rehabilitation teams.

Risks and Complications

Limb salvage surgery is major surgery and carries real risks. Understanding them in advance helps with informed decision-making and with recognising problems early if they occur.

• Infection is one of the most important complications. Infection of an implant or bone graft can be serious and sometimes requires further surgery or even, in severe cases, conversion to amputation. The risk is higher in patients receiving chemotherapy or radiation, and in operations with large soft tissue defects.
• Wound healing problems, including delayed healing or skin breakdown, can occur, especially in patients who have had radiation to the area.
• Blood clots in the legs or lungs (deep vein thrombosis and pulmonary embolism) are a known risk after major orthopaedic surgery. Preventive measures such as blood thinners and compression devices are routinely used.
• Implant-related complications include loosening over time, breakage, and wear. Modern implants are durable, but lifelong follow-up is often needed and revision surgery may be required at some point, particularly in younger patients with long life expectancy.
• Fracture of a bone graft can occur during the healing period or later under stress.
• Non-union — failure of a bone graft to heal to the surrounding bone — sometimes requires further surgery.
• Nerve injury may lead to weakness or altered sensation in part of the limb.
• Vascular injury is uncommon but can require vascular reconstruction.
• Local recurrence of the cancer is a risk after any cancer surgery and is one reason close follow-up imaging is needed for years afterwards.
• Limb length discrepancy can develop in children operated on around growing bones, which is why expandable implants and other techniques are often used in this group.
• General surgical risks such as bleeding, reactions to anaesthesia, and chest infections also apply.

The risk of any individual complication depends on the tumour, the reconstruction, the patient’s age and general health, and the treatment they have received before and after surgery. Specialist sarcoma centres aim to reduce these risks through experienced teams, careful planning, and structured follow-up.

Adjuvant Treatment and the Wider Cancer Plan

For most limb sarcomas, surgery is one part of a larger treatment plan. The other parts vary by tumour type:

• Osteosarcoma: chemotherapy is given before surgery and continued afterwards. The response of the tumour to pre-operative chemotherapy, assessed in the resected specimen, is one of the strongest indicators of long-term outcome.
• Ewing sarcoma: chemotherapy is central to treatment, both before and after local control. Radiation may be added depending on the surgical margins and tumour location.
• Soft tissue sarcomas: radiation therapy — before or after surgery — is often used for high-grade or large tumours, with chemotherapy considered for selected types.
• Chondrosarcoma: for most types, surgery is the main treatment, as these tumours are generally less responsive to chemotherapy and radiation.
• Metastatic bone disease: systemic treatment is directed at the primary cancer and may include hormonal therapy, targeted therapy, or immunotherapy alongside local treatment of the bone lesion.

This combined approach — called multimodal treatment — is recommended by major sarcoma guidelines including NCCN and ESMO, and is the basis for the substantial improvements in survival seen over recent decades.

Life After Limb Salvage Surgery

Most patients who undergo limb salvage surgery are able to use the preserved limb for everyday activities, including walking, climbing stairs, and most work-related tasks for those whose work is not heavily physical. Long-term function depends on the joint involved, the type of reconstruction, the patient’s rehabilitation, and the absence of complications.

Some considerations for long-term life with a reconstructed limb include:

• Activity modifications: high-impact sports such as running, jumping, and contact sports are often discouraged after major endoprosthetic reconstruction because of the stress they place on the implant. Lower-impact activities such as swimming, cycling, and walking are usually encouraged.
• Dental and medical care: some patients with implants are advised to take antibiotics before certain dental procedures to reduce the risk of seeding infection to the implant. Patients should mention their implant to other doctors and dentists.
• Airport security and imaging: metal implants will set off security scanners and may need to be declared. They can also affect the quality of certain MRI scans.
• Emotional adjustment: coming through a cancer diagnosis, surgery, and rehabilitation is a major life event. Many patients benefit from psychological support, peer support, or counselling at some point during recovery.
• Return to work and school: the timing varies widely with the operation and ongoing chemotherapy. Children often return to school in a modified form during chemotherapy and resume more activities as treatment ends.

Outcomes and Surveillance

Outcomes after limb salvage surgery have improved substantially over the last several decades because of advances in chemotherapy, imaging, surgical technique, and implant design. For appropriately selected patients with localised bone and soft tissue sarcomas, most studies show that limb salvage and amputation give similar overall survival, with the choice between them driven primarily by the expected functional outcome. Long-term function after limb salvage is, on average, judged better than after amputation for many patients, although individual results vary widely.

After surgery, structured follow-up is essential because most recurrences of sarcoma happen within the first two to three years. A typical surveillance plan includes:

• Clinical examination at regular intervals, more frequent in the first years and gradually less frequent over time.
• Imaging of the operated limb (X-ray, sometimes MRI) to look for local recurrence and to monitor the implant or graft.
• Chest imaging (X-ray or CT) to look for spread to the lungs.
• Ongoing physiotherapy as needed.
• Long-term implant monitoring, with attention to any new pain, swelling, or change in function.

Specific schedules vary by tumour type, stage, and the guidelines followed by the treating team. Personalised follow-up plans are made by the multidisciplinary team and should be discussed with the patient at the end of active treatment.

Limb Salvage Surgery in Children

Limb salvage surgery in children involves additional considerations because the child is still growing. A standard endoprosthesis placed across a growth plate will not grow with the child, which can lead to a significant difference in limb length over time. Several approaches address this:

• Expandable endoprostheses are implants designed to be lengthened as the child grows. Older designs required small surgeries to lengthen the implant; newer non-invasive designs can be lengthened externally using a magnetic field, avoiding repeated surgery.
• Biological reconstructions, particularly vascularised fibula grafts, can be especially valuable in children because the reconstructed bone is living tissue that can adapt over time.
• Rotationplasty is an option particularly considered for young children with tumours around the knee. By using the rotated ankle as a knee joint, it gives the child a stable, durable, and growing limb segment with a prosthesis below. Function in active children is often very good, and the reconstruction does not face the same long-term implant issues as a metal prosthesis. Many families find the appearance unfamiliar at first, and detailed counselling and photographs of children who have had the operation help in making the decision.

Decisions in children are made by paediatric orthopaedic oncologists working with paediatric medical oncologists, with close attention to the child’s growth, activity level, and long-term needs. Parents are usually given time to discuss the options, ask questions, and where helpful, speak with families whose children have had the same operations.

Frequently Asked Questions

Will I be able to walk normally after limb salvage surgery on my leg?
Most patients regain functional walking after rehabilitation, often without visible aids. The exact pattern depends on which bones and joints were involved, the type of reconstruction, and how rehabilitation goes. Some patients walk almost normally; others walk well but with a noticeable change in gait. Higher-impact activities such as running and jumping are often limited after major joint replacements.

How long does the implant last?
Modern tumour endoprostheses are designed to last many years. Over a lifetime, particularly in younger patients, some patients will need revision surgery for loosening, wear, or infection. Regular follow-up helps detect issues early.

Is limb salvage surgery as effective against the cancer as amputation?
For appropriately selected patients with localised sarcomas, most studies show similar overall survival between limb salvage and amputation. The key is that the tumour is removed with adequate margins. Where adequate margins cannot be achieved by limb salvage, amputation may be the safer cancer operation.

Will I need chemotherapy as well as surgery?
This depends on the type of cancer. For osteosarcoma and Ewing sarcoma, chemotherapy is usually given both before and after surgery. For chondrosarcoma, chemotherapy is generally not used. For soft tissue sarcomas, decisions about chemotherapy and radiation depend on the tumour type, size, and grade.

How long is the recovery?
Initial healing takes a few weeks. Returning to most daily activities takes a few months. Full functional recovery, including strength and endurance, often takes six to twelve months or longer, particularly when chemotherapy continues after surgery.

What happens if the tumour comes back?
Local recurrence is uncommon when wide margins have been achieved but can occur, most often within the first two to three years. Treatment of recurrence is individualised and may involve further surgery (sometimes amputation), radiation, or systemic therapy. This is one reason regular follow-up imaging is so important.

Can I have an MRI scan with my implant?
Most modern implants are MRI-compatible, though they may cause some distortion in the images near the implant. The team will discuss any safety considerations for scans of other parts of the body.

Will my child grow normally after limb salvage surgery?
If the surgery is across a growth plate, the child’s limb will not grow at that site as it would naturally. This is why expandable prostheses, biological reconstructions, or rotationplasty are considered in growing children. The paediatric team plans for predicted final limb length differences as part of the decision.

Are there any sports I should avoid afterwards?
After major endoprosthetic reconstruction, high-impact and contact sports are often discouraged because of the stress on the implant. Lower-impact activities such as swimming, cycling, and walking are usually encouraged. The team will give individual guidance based on the operation and the patient’s activity goals.

Conclusion

Limb salvage surgery has changed the outlook for people with bone and soft tissue sarcomas of the limbs. What was once almost always treated by amputation can now, in the majority of cases, be treated by an operation that removes the cancer and preserves the limb. The operation itself is one part of a larger plan that often includes chemotherapy, sometimes radiation, careful surgical planning, and many months of rehabilitation.

The best decisions about which type of surgery and which type of reconstruction are right for an individual come out of a careful conversation with a specialised sarcoma team. That conversation takes into account the type and location of the tumour, the patient’s age and activity, the response to any treatment given before surgery, and what matters most to the patient or family in the long run. With that planning, modern limb salvage surgery offers many patients both effective cancer control and a meaningful return to active life.