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Magnetically controlled growing rod in early onset scoliosis: a 30-case multicenter study
Julie Lebon1,2,3, Cécile Batailler4, Matthieu Wargny5
1Centre Hospitalier Universitaire de Toulouse, Toulouse, France. julie-lebon@hotmail.fr.
Summary
Magnetically controlled growing rods (MCGR) offer good scoliosis correction and reduce surgeries. However, they have a high complication rate and may lose effectiveness over time.
Area of Science:
- Spinal surgery
- Orthopedic technology
- Pediatric orthopedics
Background:
- Early onset scoliosis (EOS) requires spinal growth management.
- Magnetically controlled growing rods (MCGR) are a newer option for EOS treatment.
- Limited data exists on MCGR effectiveness and complications.
Purpose of the Study:
- To evaluate the effectiveness of MCGR in treating early onset scoliosis.
- To assess the complication rate associated with MCGR.
- To compare MCGR outcomes with traditional growing rods (GR).
Main Methods:
- Retrospective, consecutive, multicenter case series of 30 patients.
- Effectiveness assessed by deformity correction and distraction achievement.
- Complications and revision surgeries were secondary endpoints.
Main Results:
- Mean Cobb angle improved from 66° to 44°.
- MCGR avoided an average of 2.03 surgeries per patient compared to GR.
- A significant complication rate (24 events) was observed, including hook pull-outs, rod breakages, and lengthening failures.
Conclusions:
- MCGR achieves satisfactory deformity correction and reduces surgical frequency for lengthening.
- MCGR is associated with a substantial complication rate.
- The law of diminishing returns applies to MCGR, similar to traditional GR.
