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The Height Lengthening Team 07/19/2024
3 Minutes

Limb Lengthening Surgery for Post-traumatic Leg Length Discrepancy

Limb Lengthening Surgery for Post-traumatic Leg Length Discrepancy

Limb Lengthening Surgery for Post-traumatic Leg Length Discrepancy
7:30

Limb lengthening surgery is a highly specialized orthopedic procedure designed to address leg length discrepancies (LLD), a condition where one leg is shorter than the other. Leg length discrepancies commonly occur from congenital differences, growth plate injuries, or post-traumatic conditions. Post-traumatic leg length discrepancy, often arising after fractures or severe injuries, can significantly impact a patient's mobility, comfort, and overall quality of life. Limb lengthening surgery offers a solution to restore balance and function, providing substantial benefits for those affected by this condition.

Understanding Post-traumatic Leg Length Discrepancy

Post-traumatic leg length discrepancy occurs when the bones in the leg heal improperly after a fracture or severe injury.

The discrepancy can be due to:

  1. Malunion: When a fractured bone heals in an incorrect position, leading to a shorter limb.
  2. Nonunion: Failure of the bone to heal properly, causing a gap that leads to shortening.
  3. Growth Plate Injuries: In children, damage to the growth plate (epiphyseal plate) can disrupt normal growth, resulting in one leg being shorter as they age.
  4. Bone Loss: Severe trauma can cause bone loss, either from the injury itself or from surgical procedures to remove damaged bone.
  5. Infection: Post-traumatic infections can affect bone healing and growth, contributing to discrepancies.

Symptoms and Impact 

Leg length discrepancy can lead to various physical issues, including:

  • Gait Abnormalities: Uneven leg length can cause limping, compensatory gait changes, and difficulties in walking.
  • Pain: Discrepancies often result in lower back pain, hip pain, or knee pain due to the altered biomechanics.
  • Functional Limitations: Activities such as running, jumping, or even walking long distances can become challenging.
  • Postural Issues: Long-term discrepancies can lead to postural changes, scoliosis, or pelvic tilt.

Limb Lengthening Surgery: A Solution for Leg Length Discrepancy

Limb lengthening surgery is a complex process that involves gradually lengthening the bone to correct the discrepancy. It is a surgical solution for some individuals with issues regarding differing post-traumatic leg lengths. This can be achieved using different techniques, with the most common being:

  1. External Fixation: A device is attached to the bone externally, which gradually pulls the bone segments apart, allowing new bone to form in the gap.
  2. Internal Lengthening Devices: These are implanted inside the bone and slowly lengthen over time using a magnetic or mechanical mechanism.

➡️ Learn more about what your treatment options are for leg length discrepancy in this free guide.


Phases of Limb Lengthening Surgery 

The limb lengthening process typically involves three main phases:

  1. Preparation: This includes thorough pre-operative assessments, imaging studies, and planning to determine the exact length to be corrected and the best surgical approach.
  2. Surgical Phase: The surgeon makes precise cuts in the bone (osteotomy) and places the lengthening device.
  3. Distraction Phase: After a latency period to allow initial healing, the bone is gradually lengthened by a few millimeters each day. This process continues until the desired length is achieved.
  4. Consolidation Phase: The new bone (regenerate) solidifies and strengthens. This phase can take several months and is critical for ensuring the stability and strength of the lengthened limb.

Types of Limb-Lengthening Devices

Internal lengthening nails are devices that are inserted into the bone and lengthen from within. The most well-known types include:

PRECICE Nail: A magnetically controlled intramedullary nail that gradually lengthens the bone.

  • Less Visible: The device is internal, making it less noticeable.
  • Reduced Infection Risk: Fewer external pins reduce the risk of infection.
  • Comfort: Typically, more comfortable for patients compared to external fixators.
  • Cost: Internal devices are generally more expensive.
  • Complexity: Requires precise surgical placement and monitoring.

Post-operative Care and Rehabilitation

Successful limb lengthening requires diligent post-operative care and rehabilitation:

  1. Regular Monitoring: Frequent follow-ups with the orthopedic surgeon to monitor the progress of bone lengthening and adjust the device as needed.
  2. Physical Therapy: Essential for maintaining joint mobility, and muscle strength and preventing contractures. Therapy typically begins soon after surgery and continues throughout the lengthening process.
  3. Pain Management: Pain is managed through a combination of medications and other interventions to ensure patient comfort.
  4. Infection Prevention: For external fixators, meticulous care of pin sites is crucial to prevent infections.
  5. Weight-bearing Restrictions: Patients may need to avoid putting weight on the lengthened limb until the new bone is strong enough to support it.

Potential Complications and Risks

Like any surgical procedure, limb lengthening surgery carries risks and potential complications:

  1. Infection: Particularly at the pin sites for external fixators or around the internal device.
  2. Nerve or Blood Vessel Damage: Careful surgical technique is required to avoid injury to surrounding structures.
  3. Bone Healing Issues: Problems, such as nonunion, delayed union, or premature consolidation, can occur.
  4. Joint Stiffness: Particularly in adjacent joints, which may require additional physical therapy or interventions.
  5. Pain and Discomfort: Both during the lengthening process and the consolidation phase.

Advances in Limb Lengthening Surgery

operating room for limb lengthening surgery

Advances in technology and surgical techniques continue to improve the outcomes of limb-lengthening surgery:

  1. Improved Devices: The development of more sophisticated and patient-friendly lengthening devices, such as motorized nails and minimally invasive external fixators, has enhanced the procedure's precision and comfort.
  2. Computer-Assisted Surgery: Computer modeling and navigation systems allow for more accurate planning and execution of surgery.
  3. Biological Enhancements: Research into growth factors and bone regeneration therapies holds promise for accelerating bone healing and improving outcomes.

Psychological and Social Considerations

Limb lengthening surgery can be a lengthy and demanding process, both physically and emotionally:

  1. Patient Support: Comprehensive support, including counseling and support groups, can help patients cope with the challenges of the surgery and recovery.
  2. Family Involvement: Engaging family members in the care process can provide essential emotional and practical support.
  3. Lifestyle Adjustments: During the lengthening process and rehabilitation, patients may need to make significant adjustments to their daily routines.

Conclusion

Limb lengthening surgery for post-traumatic leg length discrepancy is a complex but highly effective solution for restoring function and balance to patients with significant discrepancies. Understanding the causes, surgical techniques, and comprehensive care involved in this procedure is crucial for achieving the best outcomes. With advances in medical technology and a multidisciplinary approach to care, patients undergoing limb-lengthening surgery can look forward to improved mobility, comfort, and quality of life.

Contact the Height Lengthening Institute today for a consultation with Dr. Mahboubian.

 

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