• Gazi Huri, Erdi Özdemir, Ömer Sunkar Biçer, Pınar Yilgör Huri, Sait Polat, Tuğçe Sapmaz, and Mahmut Nedim Doral.
• Department of Orthopedics and Traumatology, Faculty of Medicine, Hacettepe University, Ankara, Turkiye.
• Turk J Med Sci. 2023 Jan 1; 53 (5): 137913861379-1386.

Background/AimWe have designed an adjustable bone plate (ABP) which allows bone shortening and lengthening after fixation, which is a property not present in any of the plate systems available today. The aim of the current study was to examine the new ABP's segmental bone transfer capability for the treatment of a segmental bone defect in an animal model.Materials And MethodsFive sheep had ABPs attached to 10 of their tibias and bone defects of 15 mm in size were created. The pinion mechanism was moved with a manual screwdriver at a rate of 1mm/day for 15 days starting 3 days postoperatively. The animals were euthanized 3 months postoperatively, and the defect site and the transferred segment were evaluated by radiological and histological examination.ResultsThe radiological results revealed successful transfers of 14.6 ± 1.2 mm of bone segment on all tibia defects without any complications. The histological evaluation showed new bone formation in both the extension and the docking sites. No rupture or breakage was observed within the plates.ConclusionWe have presented the potential of a new generation ABP for use in segmental bone transfer in an animal model as well as for future clinical applications.© TÜBİTAK.

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