What is leg lengthening?
Leg lengthening is an orthopaedic operation in which the length of a bone (most often the thigh bone or the shin) is gradually increased. The procedure is based on a principle that in medicine is called distraction osteogenesis: the bone is first cut in a controlled way (osteotomy), and then the two bone ends are very slowly moved apart, millimetre by millimetre each day. In the space that forms between them the body creates new bone tissue, so that the bone both lengthens and heals on its own.
The goal of the operation is not always the same. In some patients it is about equalising leg length — when one leg is noticeably shorter than the other, which disrupts the gait, strains the spine and hips and over time leads to pain and asymmetry of the body. In others the goal is to correct the consequences of an injury, fractures that have healed with shortening, congenital conditions or differences that arose during growth.
It is important to understand that leg lengthening is not a quick procedure or a simple intervention. It is a process that lasts for months and demands discipline from the patient, regular check-ups and dedicated rehabilitation. At Medical Time we approach every patient individually — from a detailed assessment and planning, through the operation itself, to guidance through all phases of recovery.
Because of the seriousness and length of the whole procedure, the decision to operate is made carefully and only after a thorough conversation. The orthopaedist assesses the condition of the bones and soft tissues, general health and the patient's realistic expectations, so that the plan is both safe and achievable.
Who it is for — indications and causes of leg length difference
Leg lengthening is recommended when a difference in limb length, or the length of the leg itself, seriously affects function, gait and quality of life. Above all, the orthopaedist establishes the cause of the difference, because both the method and the plan of the operation depend on it.
The most common causes and conditions for which this procedure is considered are:
- congenital shortening and irregularities of bone development from birth
- a difference in leg length that arose during growth, due to a disorder in the bone's growth plate
- fractures that have healed with shortening or in an irregular position
- consequences of childhood injuries to the growth plate that halted normal bone growth
- conditions following bone infection (osteomyelitis) that damaged growth or structure
- differences in length after earlier orthopaedic operations or the fitting of prostheses
- a marked functional impairment: limping, pain in the spine, hips and knees due to asymmetric loading
- in selected patients — lengthening as part of correcting proportions, solely after a detailed assessment and with realistic expectations
Assessment before surgery — examination and imaging
Before any decision to operate, a detailed orthopaedic assessment is carried out. The aim is to measure the difference in length precisely, establish at what level and why the bone is shorter, and assess the condition of the joints, muscles and soft tissues around the planned site of the procedure.
The assessment usually includes:
- a detailed orthopaedic examination with measurement of the length of both limbs and assessment of the gait
- X-rays of the whole legs for precise measurement and planning of the osteotomy
- additional imaging where needed (CT or other scans) for precise planning of the axis and level
- assessment of general health and laboratory tests before anaesthesia
- a conversation about the goals, the expected result and the realistic course of recovery
Realistic expectations are part of the preparation
Part of good preparation is an honest conversation about what the operation can and cannot achieve. Lengthening is planned within limits that are safe for the bone, muscles, nerves and blood vessels — because all of these tissues stretch together with the bone. The orthopaedist will explain how much lengthening is realistic and safe in your case and how long the whole process will take.
Methods of leg lengthening and how they are performed
There are several modern approaches to lengthening a bone, and the choice depends on the cause, the level and the amount of planned lengthening, the patient's age and the condition of the soft tissues. All the methods share the same basis — a controlled osteotomy and gradual moving apart of the bone ends while new bone is created.
The following approaches are most often used:
- external fixator — an external device attached to the bone via pins or wires; lengthening is adjusted from the outside, gradually each day, and the device stays on until the new bone has strengthened enough
- intramedullary (internal) lengthening nail — a mechanism fitted into the bone canal that gradually lengthens without an external device, avoiding the risk around pin sites and making daily life easier during the lengthening phase
- combined approaches — in more complex cases, where alongside lengthening the axis or direction of the bone also needs to be corrected
Preparation for surgery
Like any major orthopaedic operation, leg lengthening requires thorough preparation. The aim of preparation is for the operation to be carried out as safely as possible and for recovery to begin under the best possible conditions.
Preparation usually includes:
- a complete pre-operative examination and laboratory blood tests
- an ECG and, where needed, examination by an internist and anaesthesiologist to assess fitness for anaesthesia
- a detailed plan of the operation based on the imaging — the level of the osteotomy and the choice of method
- a conversation with the anaesthesiologist about the type of anaesthesia and the course of the day of surgery
- adjustment of regular therapy — especially blood-thinning medication, which is decided solely by the physician
- instructions on when to stop eating and drinking before the operation (most often fasting)
- preparation of the home and aids for the recovery period (crutches, a walking frame, an adapted space)
Course of the operation and duration
The operation itself is carried out under general or regional anaesthesia, which the anaesthesiologist decides together with the patient. During the procedure the orthopaedist precisely cuts the bone at the pre-planned level (osteotomy) and fits the chosen lengthening system — an external fixator or an internal nail.
At this stage the bone is not yet lengthened. First a short period is awaited (the so-called latency phase) so that the creation of new bone can begin at the cut site. Only after that does the lengthening phase begin, in which the bone ends are moved apart very slowly — each day by a small, predetermined amount.
The operation itself most often lasts a few hours, depending on the method and the complexity of the case. However, what makes this procedure long is not the operation but the phases that follow: the lengthening and then the maturation (consolidation) of the new bone can take months. Throughout the whole period the patient comes for regular check-ups and imaging, by which the orthopaedist monitors how the new bone is progressing.
For this reason leg lengthening should be understood as a process, not a one-off procedure. The operation is only the beginning — the real result is built patiently, step by step, with continuous monitoring and the cooperation of the patient and the team.
Recovery and rehabilitation — by phases
Recovery after leg lengthening is long and takes place in several phases. It is realistic to say that it is measured in months, not weeks, and that success depends to a large degree on the patient's consistency in rehabilitation. Physiotherapy is not an add-on but a key part of the treatment.
Recovery most often passes through the following phases:
- Early period after the operation — calming pain and swelling, care of the surgical site, first mobilisation with aids and under the supervision of a therapist
- Lengthening phase — gradual moving apart of the bone over several weeks; at the same time work is done on maintaining joint mobility and stretching the muscles, because the soft tissues stretch together with the bone
- Bone maturation (consolidation) phase — the new bone gradually strengthens; loading is increased gradually, solely according to the orthopaedist's instructions and based on follow-up imaging
- Phase of restoring function — strengthening the muscles, establishing a correct gait and a gradual return to everyday activities
Possible risks and complications
Leg lengthening is a serious operation and, like any major orthopaedic procedure, it carries certain risks. An open conversation about them is part of a responsible approach — the aim is not to frighten the patient, but for them to enter the procedure informed and realistically prepared. In controlled inpatient conditions and with an experienced team, the risks are carefully monitored and reduced to the smallest possible measure.
Possible risks and complications include:
- difficult or slowed creation of new bone, because of which the maturation phase may take longer
- stiffness of the joints and a reduced range of movement if rehabilitation is not carried out consistently
- tightening of the muscles, tendons and soft tissues that stretch together with the bone
- with external fixators — irritation or infection around the pin sites, which requires care and monitoring
- general surgical risks — related to anaesthesia, bleeding or slower healing of the wound
- in rarer cases — the need for an additional procedure or adjustment of the plan during the process
- irritation of the nerves or changes in sensation, which are most often monitored and subside, but require attention
Why have leg lengthening at Medical Time
Leg lengthening is a procedure in which the orthopaedist's experience, the quality of planning and guidance through a long recovery matter equally. At Medical Time we approach every patient individually — from the first consultation, through the choice of method, to rehabilitation and check-ups.
What sets our approach apart:
- an experienced orthopaedic team and careful, individual planning of every case
- modern lengthening methods and a choice of approach according to the patient's actual needs
- a detailed pre-operative assessment and a realistic conversation about expectations and the course of recovery
- guided rehabilitation and monitoring through all phases, with regular follow-up imaging
- everything in one place — examinations, diagnostics, surgery and check-ups
- the support of staff before, during and after the procedure, throughout the long process of recovery
Price — leg lengthening
The price of leg lengthening is set individually, after an examination and the drawing up of an operative plan. There is no single price, because the costs depend on the chosen method (external fixator or internal nail), the amount of planned lengthening, the complexity of the case, the type of anaesthesia and the length of the hospital stay.
For this reason you receive an exact estimate and a personalised offer only after a consultation and a review of the imaging, when the orthopaedist can realistically assess your case. This way you know exactly what is included, with no hidden costs.
For an individual assessment and offer, book a consultation or call 062-399-888.
Frequently asked questions about leg lengthening
The whole process is measured in months, not weeks. The operation itself takes a few hours, but the phases that follow — gradual lengthening and then maturation of the new bone — take considerably longer and are monitored with regular check-ups and imaging. The exact duration depends on the method, the amount of lengthening and how your bone heals, so it is assessed individually.
The operation itself is carried out under anaesthesia, so you feel no pain during the procedure. After the operation and during the lengthening phase discomfort and pain are possible, which are monitored and eased with therapy. The stretching of the soft tissues together with the bone can cause tightening, which is why rehabilitation is so important.
The most commonly used are the external fixator, which is adjusted from the outside, and the internal (intramedullary) nail, which is fitted into the bone canal and lengthens without an external device. In more complex cases combined approaches are used. Which method is best for you is decided by the orthopaedist after a detailed assessment.
The amount of lengthening is planned within limits that are safe for the bone, muscles, nerves and blood vessels, because all of these tissues stretch together with the bone. There is no universal figure — the orthopaedist assesses how much lengthening is realistic and safe in your particular case and explains the expected result to you.
Mobilisation with aids (crutches, a walking frame) most often begins soon after the operation, but full loading of the leg is introduced gradually and solely according to the orthopaedist's instructions and follow-up imaging. The return to driving and usual activities depends on the phase of recovery and is assessed individually.
Yes. Rehabilitation is not an add-on but a key part of the treatment. Without consistent physiotherapy the joints can stiffen and lose mobility, and the muscles can remain tight. Persistence in exercise largely determines the final outcome.
The price is set individually, after an examination and operative plan, because it depends on the method, the extent of correction, the complexity and the length of the stay. For this reason an exact offer is given only after a consultation. For an assessment and appointment, call 062-399-888.
Possible risks include slowed creation of new bone, stiffness of the joints, tightening of the soft tissues, irritation around the pin sites with external fixators, and general surgical risks. In controlled conditions and with regular check-ups the risks are carefully monitored and reduced to the smallest measure. The orthopaedist explains them in detail before the decision to operate.