An Innovative Plate Concept for Rotational Guided Growth: A Porcine Pilot Study

Ahmed A. Abood*, Jan D. Rölfing, Ahmed Halloum, Steffen Ringgaard, Jeppe S. Byskov, Søren Kold, Ole Rahbek

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

Background
Rotational deformities in children are currently treated with an osteotomy, acute de-rotation, and surgical fixation. Meanwhile, guided growth is now the gold standard in pediatric coronal deformity correction. This study aimed to evaluate the feasibility of a novel implant intended for rotational guided growth (RotOs Plate) in a large porcine animal model.

Methodology
A submuscular plate was inserted on the medial and lateral aspect of the distal femoral physis of the left femur in 6 pigs. Each plate was anchored with a screw in the metaphysis and epiphysis respectively. The plates were expected to rotate the femur externally. The right femur acted as a control in a paired design. The animals were housed for 12 weeks after surgery. MRI scanning of both femora was performed before euthanasia after 12 weeks. Rotation was determined as the difference in the femoral version on MRI between the operated and non-operated femur after 12 weeks.

Results
External rotation in all operated femurs was observed. The mean difference in the femoral version on MRI between operated and non-operated femurs was 12.5° (range 9°-16°). No significant changes in axial growth were detected.

Conclusions
This study shows encouraging results regarding rotational guided growth, which may replace current invasive surgical treatment options for malrotation in children. However, further studies addressing potential secondary deformities are paramount and should be carried out.
Original languageEnglish
Article numbere58169
JournalCurēus
Volume16
Issue number4
Number of pages8
ISSN2168-8184
DOIs
Publication statusPublished - 13 Apr 2024

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Copyright © 2024, Abood et al.

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