What is Limb Lengthening Surgery? Methods and Recovery Process

Limb lengthening surgery is a specialized orthopedic procedure that involves surgically cutting the leg bones and gradually separating them to stimulate the formation of new bone tissue. Applied both for medical necessities, such as restricted growth conditions, and for cosmetic purposes, this method requires patience and a rigorous rehabilitation process. The treatment aims to lengthen bones, muscles, and nerves in harmony by harnessing the body's natural healing capacity.

• The bone is lengthened by an average of 1 millimeter per day using special devices.
• It can be performed for cosmetic purposes as well as medical necessities.
• For cosmetic lengthening, the bone growth plates must be fully closed.
• The process consists of the surgery, the lengthening phase, and the consolidation phase where the new bone hardens.
• Regular physical therapy after surgery is vital for a successful outcome.

What is Limb Lengthening Surgery?

Limb lengthening surgery, medically known as distraction osteogenesis, is a surgical procedure that allows new bone tissue to form in the gap created by carefully and gradually separating the bones. Developed in the 1950s by Russian Orthopedist Dr. Gavriil Ilizarov, this principle is used to restore leg length or increase overall height. Also known as leg lengthening surgery, the procedure begins with the bone being surgically divided into two. The bone ends are then moved apart millimeter by millimeter every day. The body continuously produces new bone cells to bridge this gap. Once the desired length is achieved, the lengthening process is stopped, and the newly formed bone is allowed to harden. During this period, it is not just the bone that adapts; the surrounding muscles, blood vessels, nerves, and skin tissues also gradually stretch to accommodate the new length. When planned correctly, this treatment, which requires patience, provides permanent and natural lengthening.

Who is it for and What are the Medical Reasons?

Limb lengthening surgeries are successfully performed to treat many congenital or acquired orthopedic issues. Genetic bone growth disorders that cause short stature, such as achondroplasia in children, are among the most common medical conditions for which this surgery is performed. Additionally, limb length discrepancy (inequality between the legs) can occur as a result of childhood traumas or bone infections that cause the growth plates to close prematurely. Incorrectly healed fractures, polio sequelae, or shortness due to metabolic diseases can also be treated with lengthening surgery. Timing is a critical factor in this process. While early surgeries carry risks such as recurrence of shortness or infection, delayed interventions can lead to permanent curvatures in the spine and joints. For this reason, lengthening surgeries are generally not recommended for children under the age of 5, even in cases of medical necessity. The patient's general health condition, bone quality, and psychological maturity to adapt to the treatment are other important criteria evaluated.

Cosmetic Limb Lengthening Requirements and Age Limits

Procedures performed entirely because a person is dissatisfied with their height, without any medical necessity, are called cosmetic limb lengthening. Orthopedic specialists act very selectively with patients who want to increase their height for cosmetic purposes. First and foremost, the patient must have completely finished their bone development, meaning the growth plates must be closed. This usually occurs around the age of 18-20. In cosmetic lengthening, body proportions (the ratio of arms, torso, and legs) are carefully examined, and it is explained in detail to the patient that the lengthening will only be done from the legs. Since this surgery requires a challenging recovery process that lasts for months, it is essential that the patient is psychologically prepared. Providing detailed information to both the patient and their family before the surgery and receiving psychological support during the treatment are among the most important factors that increase success. For patients who want to spend the long recovery process more comfortably at home and get ready for summer, such planning can be evaluated within the scope of the advantages of having cosmetic surgery in winter.

Limb Lengthening Surgery Methods: How is it Performed?

Today, different techniques are applied in limb lengthening surgery depending on the patient's needs, bone structure, and budget. These methods are divided according to whether the lengthening is done with an external device or a system placed inside the bone:

• Classic Ilizarov Method: This is the traditional method where the bones are stabilized externally with circular metal rings and wires. Lengthening of 1 mm per day is done by turning the external screws. It is very effective in correcting complex bone deformities, but having the device on the outside can reduce patient comfort and create a risk of infection at the pin sites.
• LON Technique (Lengthening Over Nail): In this method, a titanium nail is placed inside the bone while a temporary fixator is attached to the outside. The lengthening process is done with the external device. When the desired height is reached, the external device is removed, and the internal nail continues to support the bone. It provides great comfort to the patient as it significantly shortens the time the external device stays on compared to the Ilizarov method.
• Motorised Nail (Internal) Method: This is the most modern approach in lengthening surgery. An extendable motorised or magnetic nail is placed inside the bone. There are no external devices, wires, or screws. The patient performs the lengthening themselves using an external magnetic remote control. The risk of infection is very low, and it is highly comfortable. However, it has disadvantages such as high cost and the inability to put full weight on the leg during the lengthening period.

The method to be applied is determined jointly by the physician and the patient after a detailed examination and radiological evaluations. For a detailed comparison of the methods, you can also review our article on limb lengthening surgery methods and the recovery process.

Post-Surgery Rehabilitation, Walking Aids, and Physical Therapy

The success of limb lengthening surgeries depends as much on the post-operative rehabilitation process as on the surgical intervention itself. The hospital stay after surgery is usually between 2 to 3 days. Patients are mobilized early with the help of crutches or a walker. As the bone lengthens, muscles, tendons, and ligaments do not want to stretch at the same rate and show resistance. This can lead to joint stiffness and restricted movement. To prevent this, a strict physical therapy program starting the day after surgery and lasting for months is implemented. Stretching the Achilles tendon and hamstring muscles is particularly vital. The patient's regular daily stretching exercises ensure that the muscles adapt to the new bone length. When full healing is achieved in the lengthened bone and the new bone tissue reaches sufficient hardness, the patient is allowed to walk without support. During the recovery process, exercises that strengthen the muscles without straining the joints, such as swimming and stationary cycling, are frequently recommended.

What are the Risks and Possible Complications?

Although limb lengthening surgeries are reliable methods applied with high success rates, they carry certain risks like any surgical procedure. Since the treatment takes months, one must be prepared for this process. In the externally applied Ilizarov or LON techniques, superficial infections (pin site infections) can be seen at the points where the wires and screws pass through the skin. This situation is usually brought under control with regular dressing and antibiotic treatment. Joint stiffness (contractures) may develop due to the muscles not stretching enough during the lengthening process. Very rarely, new bone formation in the lengthened area may be insufficient (non-union), or the bone may harden much faster than expected, stopping the lengthening (early consolidation). Additionally, temporary numbness or loss of sensation may occur due to excessive stretching of the blood vessels and nerves. All these potentially risky situations are closely monitored with radiological imaging by the specialist orthopedic team.

When to See a Doctor?

While the lengthening process continues at home, patients need to read their body's signals correctly. Although most pain and feelings of tension are part of the normal healing process, some symptoms may require immediate medical attention. If you notice any of the following warning signs, you should consult your doctor without delay or go to the emergency room:

• Sudden, severe leg pain that does not subside with painkillers,
• A high fever exceeding 38 degrees Celsius that does not go down,
• Bruising, paleness, or a severe feeling of coldness in the toes,
• Sudden onset of numbness, tingling, or loss of movement in the leg, foot, or toes,
• Excessive redness, swelling, or foul-smelling yellow/green discharge at the pin or screw entry sites,
• Shortness of breath or chest pain (rare, but indicative of a suspected blood clot).

In such emergencies, you can call 112 (the national emergency number in Türkiye) or visit the emergency department of a fully equipped hospital.

The Process at BHT CLINIC

At BHT CLINIC İstanbul Tema Hastanesi in Küçükçekmece, limb lengthening and extremity reconstruction processes are carried out in accordance with international quality standards, backed by our JCI accreditation. Our specialist physicians in the Orthopedics and Traumatology department determine the most appropriate surgical method by analyzing the patient's expectations and medical condition in detail. Pre-operative planning, psychological counseling, surgical intervention, and post-operative physical therapy processes are coordinated under the same roof with a multidisciplinary approach. With our 24/7 emergency department and intensive care units, your safety is kept at the highest level during the post-operative period as well. To get detailed information about your treatment process and to create a personalized plan, you can book an appointment.

Frequently Asked Questions

Will there be surgical scars?

Yes, depending on the method used, there will be surgical scars on the leg. While small, dot-like scars form at the entry points of wires and screws in externally applied methods, there are only a few centimeter-long incision scars in the areas where the nail is placed in motorised nail methods. These scars fade over time.

What is the maximum lengthening possible?

The safe and healthy lengthening limit from a single bone segment (only the tibia or only the femur) is generally between 5 to 8 cm. In medical conditions such as achondroplasia, lengthening of up to 15-25 cm in total can be achieved by intervening in both bone groups in different sessions.

How are limb lengthening surgery prices determined?

Limb lengthening surgery prices vary according to the preferred surgical technique (Ilizarov, LON technique, or motorised nail), the type of implant to be used (domestic or imported), the length of hospital stay, and the physical therapy sessions required after surgery. Motorised nail systems are generally the most expensive option as they incorporate advanced technology.

How long does the recovery process take?

The recovery time varies depending on the amount of lengthening. As a general rule, a bone consolidation period of approximately 1 to 1.5 months is anticipated for every 1 centimeter of lengthening. For example, when a 5 cm lengthening is planned, it may take an average of 6-8 months for the bone to fully fuse and for the patient to return to their normal life without support.

Can I play sports after the surgery?

Once the bone has completely fused and physician approval is obtained, patients can return to their normal sports lives. After the lengthening process is completed and the devices are removed, sports such as swimming, cycling, and brisk walking are recommended. For heavy contact sports like football and basketball, it is usually necessary to wait 1 year after full recovery.

This article is for informational purposes only; please consult your doctor for diagnosis and treatment.