Simultaneous Limb Lengthening With Ankle Fusion Using an Internal Lengthening Nail

Area of Science:

• Orthopedic Surgery
• Biomedical Engineering
• Reconstructive Surgery

Background:

• Limb length discrepancy (LLD) and ankle deformity present significant challenges in orthopedic surgery.
• Traditional treatments often involve separate procedures for fusion and lengthening, potentially leading to suboptimal outcomes.

Observation:

• A novel technique combining ankle fusion with simultaneous tibial lengthening using a magnetic internal lengthening nail was employed in 17 patients.
• Preoperative limb length discrepancy averaged 4.9 cm, with concurrent ankle deformity present in all cases.

Findings:

• The combined procedure achieved a mean tibial lengthening of 4 cm, significantly reducing the final LLD to a mean of 1 cm (p<0.01).
• All patients achieved a plantigrade foot position with minimal to no pain and improved functional walking post-surgery.
• Radiographic and clinical outcomes confirmed successful ankle fusion and limb lengthening in all cases.

Implications:

• This combined approach offers an effective solution for patients requiring both ankle fusion and limb lengthening, simplifying treatment and improving patient function.
• This is the first report detailing the successful use of an internal lengthening nail for simultaneous ankle fusion and tibial lengthening.
• The technique holds promise for improving outcomes in complex lower limb deformities and discrepancies.