Limb lengthening takes 9–18 months. An osteotomy is followed by slow distraction at ~1 mm per day; new bone grows in the gap. Once target length is reached, a consolidation phase allows the bone to harden before rehabilitation.
Key Points
- The process has four main phases: consultation and candidacy assessment, surgery, distraction, and consolidation/rehabilitation.
- Surgery itself is a single procedure; the months of recovery and physiotherapy are where most of the work happens.
- Living Taller offers two lengthening methods: a fully internal magnetic nail (nothing to carry outside the body), or LON (Lengthening Over Nail), which pairs an internal nail with a temporary external frame worn only during the distraction phase. The choice is made with your surgeon based on your case.
- Physiotherapy is not optional; it runs alongside every phase and continues after consolidation.
- International patients can manage most of the distraction phase remotely, with telemedicine support.
Phase 1: Consultation and Candidacy Assessment
Before any surgery is discussed in detail, the first step is an honest assessment of whether you are a suitable candidate. This is not a formality — it is the foundation of a safe outcome.
At Living Taller, the candidacy assessment covers:
- Medical history and examination — existing conditions, bone health, prior injuries, and current medications that may affect healing.
- Imaging — X-rays and sometimes advanced imaging to assess bone quality and anatomy.
- Psychological evaluation — an independent meeting with a psychologist to explore your motivations, expectations, and readiness for the demands of recovery. This is mandatory, not optional.
- Honest goal-setting — the surgeon discusses what is realistically achievable for your specific anatomy, including the limits on how much height can safely be added.
Sometimes the answer at this stage is "not yet" or "not for you." That answer, when it is the right one, is the most valuable thing a surgeon can offer.
Phase 2: Surgery — The Osteotomy and Nail Placement
Surgery is performed under general or spinal anaesthesia and typically takes two to three hours for a single segment. The two most commonly lengthened segments are the femur (thigh bone) and the tibia (shin bone). Lengthening both simultaneously is possible but significantly increases the overall demands on the patient.
Two lengthening methods: internal nail and LON
Living Taller performs both of the two established lengthening methods. Which one is used for your case is decided with your surgeon, based on your anatomy, goals, and budget:
- Fully internal magnetic nail (PRECICE-class): the entire lengthening device sits inside the bone. Daily lengthening is adjusted with an external magnetic remote — there is no frame to manage and no pin sites to care for. This method carries a considerably higher implant cost.
- LON (Lengthening Over Nail): an internal nail is placed together with a lightweight external fixator. The fixator, not the nail, is what is adjusted to achieve daily distraction; it is worn on the outside of the limb throughout the distraction phase and removed in a second, smaller procedure once the target length is reached, after which the nail alone supports the limb through consolidation. LON requires daily pin-site care while the frame is worn, and pin-site infection is a real — usually manageable — risk. It is a long-established technique and substantially more affordable than a fully internal nail.
What happens during the operation
The surgeon makes a controlled cut through the bone — this is the osteotomy. At the same time, the chosen internal nail is placed inside the bone through small incisions. With a fully internal nail, the nail contains a small motor that responds to an external magnetic remote, which will control the daily lengthening in the weeks that follow. With LON, an external fixator is fitted at the same time — it is the fixator, not the nail, that is adjusted during distraction.
With a fully internal nail, everything is inside the body once you wake from surgery — there is no external frame to manage, no pins through the skin to clean, and no visible hardware. With LON, the external frame is visible and in place for the weeks of the distraction phase, and daily pin-site cleaning is required until it is removed. Either way, you wake from surgery with small surgical incisions and an internal nail already in place.
Hospital stay and early recovery
Most patients are in hospital for two to five days. Physiotherapy begins within the first day or two, focused initially on preventing stiffness and beginning partial weight-bearing. Swelling, discomfort, and restricted movement are normal at this stage.
Phase 3: Distraction — The Lengthening Period
Distraction begins roughly five to seven days after surgery, once the early healing response has begun. With a fully internal nail, the nail is activated using an external magnetic remote, typically four times per day — each activation turning the nail by a fraction, accumulating to approximately 1 mm of lengthening over 24 hours. With LON, the external fixator is adjusted by a small, precise amount each day to achieve the same rate of lengthening.
What "distraction osteogenesis" means in practice
The controlled pulling apart of the two bone ends triggers the body to grow new bone tissue in the widening gap — the same biological response as fracture healing, but directed with precision. This new tissue is called the regenerate. It is your own bone, grown by your own body; it is not a graft or implant.
Managing the distraction phase day to day
- Most patients manage this phase at home or in serviced accommodation, with periodic clinic visits and remote check-ins.
- X-rays are taken regularly — typically every two to four weeks — to monitor the quality of the regenerate and ensure the rate is appropriate for that patient's bone.
- Daily physiotherapy exercises are essential throughout. The muscles and soft tissues around the bone need to stretch and strengthen as the bone lengthens.
- Pain during this phase varies widely. Most patients describe it as discomfort rather than acute pain; the surgeon will advise on appropriate analgesia.
For patients travelling from abroad — from the UAE, UK, or internationally — Living Taller coordinates telemedicine follow-up and support with a local physiotherapist in your home country during this phase. See the international patients section for more detail.
Phase 4: Consolidation — Waiting for the Bone to Harden
Once the target length has been reached, distraction stops. The regenerate — the new bone that has formed — now needs time to consolidate: to mineralise and harden into mature bone that can bear your full weight.
This is typically the longest phase. As a rough guide, consolidation takes approximately one month per centimetre of new bone grown, though this varies considerably between patients and is influenced by age, bone quality, nutrition, and adherence to physiotherapy. Your surgeon will use serial X-rays to judge when the bone is mature enough to progress.
What consolidation looks like on X-ray
The regenerate begins as soft callus, appears hazy on X-ray, and gradually becomes denser and more defined as it matures. When cortical bridging (solid bone on both sides of the gap) is visible, the surgeon will typically allow progressive full weight-bearing.
Phase 5: Rehabilitation — Rebuilding Strength and Function
When the bone is consolidated, the focus shifts entirely to physiotherapy and rehabilitation. Muscles that have been through months of gradual stretch need systematic strengthening. Joint range of motion, balance, and gait are all addressed progressively.
Most patients return to desk-based work and light daily activity well before full rehabilitation is complete. Return to impact exercise, sport, or heavy physical work comes later — typically confirmed by imaging and functional assessment rather than a calendar date.
Long-term follow-up
At Living Taller, the follow-up relationship does not end when rehabilitation is complete. Imaging and check-ins continue for years post-surgery to monitor the nail, bone integrity, and joint health. If the nail is ever removed — this is elective and not always necessary — that becomes a separate, smaller procedure planned in consultation with your surgeon.
Ready to discuss your case?
A private consultation with Dr. Aman Khanna is the right next step — no commitment, no pressure. We'll give you an honest assessment of whether surgery is appropriate for you.
Frequently Asked Questions
How long does the full limb lengthening process take?
The total timeline varies by the amount of lengthening planned. The distraction phase typically runs for several weeks to a few months at approximately 1 mm per day, followed by a consolidation phase that can take several more months while the new bone hardens. Most patients should expect the full process — from surgery to return to normal activities — to span roughly 9 to 18 months, though this is highly individual and confirmed with your surgeon.
What is distraction osteogenesis?
Distraction osteogenesis is the biological principle behind limb lengthening. After a controlled bone cut (osteotomy), the two bone segments are very slowly pulled apart — typically around 1 mm per day — creating a gap that the body fills with new bone tissue. This is the same mechanism the body uses to heal a fracture, guided precisely by the surgeon and the internal nail.
Is physiotherapy required during limb lengthening?
Yes — physiotherapy is not optional; it is a core part of the treatment. During the distraction phase, daily exercises help maintain joint range of motion and muscle strength. During consolidation and rehabilitation, physiotherapy progressively rebuilds strength and function. Skipping or abbreviating physiotherapy increases the risk of joint stiffness and a prolonged recovery.
Can I manage the distraction phase at home?
With a fully internal nail, the daily lengthening is controlled remotely via an external magnet, so patients do not need to turn any external device themselves. With LON, patients (or a caregiver) are trained to make the small daily fixator adjustment and to keep up with pin-site care while the frame is worn. Most patients can manage either phase from home, with scheduled check-ins and imaging to monitor progress. International patients are typically supported via telemedicine alongside coordination with a local physiotherapist.
What happens at the psychological screening stage?
Before surgery is scheduled, every patient meets with a psychologist for an independent evaluation. The purpose is to ensure the patient has realistic expectations, a stable motivation for surgery, and adequate emotional and social support for the demanding recovery. Candidates who are not in a suitable mental-health position at the time of assessment may be asked to defer rather than be declined permanently.