What Is Arm Lengthening (Bilateral Humeral Lengthening)?
Arm lengthening, or bilateral humeral lengthening involves the gradual extension of both humerus bones using a method similar to that of leg lengthening. By applying an internal or external lengthening device and precisely managing bone regeneration through osteogenesis, the procedure enables patients to gain between 4 and 8 cm in arm length.
Though less common than lower limb procedures, humeral lengthening has gained popularity among:
Patients who have undergone height surgery and seek proportional arms
Individuals with naturally short upper limbs
Those with congenital or post-traumatic deformities
Benefits of Arm Lengthening
✔ Improved Proportions: Balanced limb appearance after leg lengthening
✔ Enhanced Reach and Functionality: More ergonomic arm span
✔ Better Self-Confidence: Especially in clothing and physique-conscious patients
✔ Minimal Scarring: With internal methods like PRECICE for discreet recovery
✔ Customizable Plan: Choose internal or external lengthening depending on your anatomy and preferences
Bilateral Humeral Lengthening Procedure Overview
Evaluation & Imaging Full 3D scans and measurements to assess arm-to-body ratio, flexibility, and nerve condition.
Surgical Phase Under general anesthesia, the humerus bones are carefully cut (osteotomy) and implanted with either an internal PRECICE nail or an external fixator, depending on the technique used.
Distraction Period Gradual daily lengthening of approximately 0.75–1 mm, split across both arms. This period typically lasts 6–8 weeks.
Consolidation & Physiotherapy Bones regenerate and harden over the next 3–6 months. Physical therapy ensures muscle balance, shoulder mobility, and nerve safety.
Recovery Timeline of Bilateral Humeral Lengthening Procedure
Hospital Stay: 3–5 days
Distraction: 6–8 weeks
Bone Consolidation: 3–6 months
Full Mobility Recovery: Up to 9–12 months
Is Bilateral Humeral Lengthening Safe?
When performed by skilled surgeons, bilateral humeral lengthening is a safe and effective procedure. We take every measure to minimize risks such as nerve tension or muscle stiffness through:
Advanced surgical navigation systems
Neuromonitoring during surgery
Intensive arm physiotherapy during recovery
Regular imaging to track bone healing
Pre-procedure Tips for Arm Lengthening (Bilateral Humeral Lengthening)
Careful preparation helps ensure a smooth surgery and a stable foundation for the lengthening process ahead. Consider the following before your procedure:
Complete all requested imaging and evaluations, including 3D scans to assess arm-to-body ratio, bone quality, and nerve condition.
Stop smoking and avoid alcohol for several weeks beforehand, as both can impair bone regeneration and healing.
Review current medications with your surgical team; blood thinners and certain supplements may need to be paused.
Arrange for practical support at home, since both arms will have limited use during the early recovery period.
Discuss your choice of internal (PRECICE) or external fixation device based on your anatomy and lifestyle.
Operation Day: Step by Step for Arm Lengthening (Bilateral Humeral Lengthening)
On the day of surgery, the procedure follows a structured sequence to ensure precision and safety:
General anesthesia is administered, and the surgical team confirms final measurements and device selection.
The surgeon performs a controlled osteotomy on each humerus, carefully preserving surrounding nerves and blood vessels.
An internal PRECICE nail or an external fixator is implanted in both arms to enable gradual lengthening.
Surgical navigation and neuromonitoring are used throughout to protect nerve function and ensure accurate alignment.
You are transferred to recovery for observation, with pain management and initial imaging to confirm correct device placement.
Post-procedure Tips for Arm Lengthening (Bilateral Humeral Lengthening)
Recovery unfolds gradually over several months, and following these guidelines supports safe healing and optimal results:
Expect a hospital stay of 3 to 5 days, followed by daily distraction adjustments over 6 to 8 weeks as directed by your surgeon.
Attend regular imaging appointments to monitor bone regeneration and adjust the lengthening pace if needed.
Commit to intensive physiotherapy to maintain shoulder mobility, muscle balance, and nerve health throughout consolidation.
Avoid heavy lifting or strain on the arms until your surgeon confirms sufficient bone consolidation, typically 3 to 6 months.
Sleep in a comfortable, supported position that avoids pressure on the arms, using pillows for elevation if recommended.
Patient stories
Breast Implants & Tummy Tuck · DKFrom Beautiful to Gorgeous!As a fitness model, Mia needed to keep her body in the best shape. She contacted Estetik International to give her the right touch to her gorgeous body. Check out her journey.Watch on YouTube 
Secondary Rhinoplasty · FRA Moving Story!After an unfortunate accident that broke her nose and altered her facial features, and after being rejected by many doctors in France due to her complicated case, she chose Estetik International and came to Turkey to have her nose fixed by our amazing surgeon Prof. Dr. Cenk Şen. She finally got her beauty and happy life back. Check out her full story here.Watch on YouTube 
Organic Hair Transplant · DEGorgeous Hair Loading!As a young man, baldness can make you look older. Our dear patient Andreas, decided to say “stop” to baldness and chose Estetik International to get his organic hair transplant done by our experts. Check his story and see how he decided to come with his friend to Istanbul to get their new hair.Watch on YouTube Frequently asked questions
Bilateral humeral lengthening is a surgical procedure that gradually extends both upper arm bones (humeri) to increase overall arm length, typically by 4 to 8 cm. It suits patients who have undergone height lengthening surgery and want proportional arms, individuals with naturally short upper limbs, and those with congenital or post-traumatic deformities. A thorough evaluation, including 3D imaging and assessment of bone quality, nerve condition, and flexibility, determines candidacy before proceeding.
The procedure is performed under general anesthesia. The surgeon carefully cuts each humerus (osteotomy) and inserts either an internal PRECICE nail or an external fixator, depending on your anatomy and preference. Once healing begins, the device is gradually adjusted to lengthen the bone by approximately 0.75 to 1 mm per day across both arms, a phase called distraction, which typically lasts 6 to 8 weeks and is closely monitored with imaging and neuromonitoring.
Hospital stay is usually 3 to 5 days. The distraction phase, where the arms are gradually lengthened, lasts around 6 to 8 weeks. This is followed by a consolidation period of 3 to 6 months, during which the new bone hardens and physiotherapy restores muscle balance and shoulder mobility. Full functional recovery, including complete range of motion and strength, generally takes 9 to 12 months, so patience and consistent rehabilitation are essential.
Yes, once the newly formed bone has fully consolidated and hardened, which is confirmed through regular imaging, the length gained is permanent. The bone remodels and strengthens over the following months, integrating naturally with the rest of the arm structure. Maintaining good bone health, following the prescribed physiotherapy program, and attending follow-up appointments help ensure the new bone matures properly and the results remain stable long term.
Potential risks include nerve tension, muscle stiffness, and delayed bone healing, which are minimized through surgical navigation systems, intraoperative neuromonitoring, and dedicated physiotherapy. Internal methods such as PRECICE nails leave minimal, discreet scarring compared to external fixators. Turkey, and Estetik International specifically, offers this specialized procedure at a more accessible cost than many Western countries, without compromising on surgical expertise, hospital accreditation, or personalized rehabilitation support.
Considering Arm Lengthening?
Share a few details and a patient coordinator will plan your consultation with the right surgeon.