O C Shirley, A Field, A Barrie, J Ferguson

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Presentation transcript:

Magnetically Controlled Growing Rods in Early-Onset Scoliosis: The Graduates O C Shirley, A Field, A Barrie, J Ferguson Starship Children’s Hospital, Auckland, New Zealand

Aims To describe the surgical experience and to measure the final correction achieved in ‘the graduates’

Patients and Methods Cobb angle and height from T1-S1 was measured from pre-operative and 6 week postoperative erect films. The surgeons were interviewed about their operative experience and a review of the operative notes was performed

Results – Intraoperative Findings Metalosis - associated with the rod-motor junction(5/5) Loose screws requiring upsizing (5/5) Broken mechanisms (2/5) Metalosis A broken mechanism Post simple debridement

Results – Final Correction The mean coronal cobb angle correction was 17.7 degrees (-0.3-44.3) The mean change in height T1-S1 17.8mm (2-56) Change in coronal alignment Change in height

Results – Length of stay and complications The average length of stay was 8.8 days (6-16) One patient required two washouts due to on-going wound ooze with no positive deep tissue cultures

Conclusions During definitive fusion surgery following MCGR one can expect to routinely encounter metalosis which can be readily debrided in a contiguous layer. Several of the screws are often loose and must be upsized to provide sufficient strength for the definitive construct. The additional correction achieved is variable and depends primarily on the extent of the preoperative deformity. Length of stay is similar to a routine posterior spinal fusion.