TY  - JOUR
TI  - The effect of onlay cortical fibula strut grafts on biomechanical features of
Vancouver type B1 periprosthetic femoral fractures
AB  - Objective: This study aimed to investigate biomechanically the effects of onlay fibula grafts on Vancouver Type B1 Periprosthetic Femoral
Fractures (PPFs).
Methods: Vancouver Type B1 PFF models were created in 25 fourth-generation synthetic femurs and fixed with locking plates using
bicortical, unicortical screws, and cables. While no graft was used in group 1, onlay fibula grafts were placed anteriorly in group 2 and
medially in group 3. In group 4, the cortical strut allograft was placed on the medial femoral cortex, and a locking compression plate
(LCP) was applied to the lateral femoral cortex. In group 5, the strut allograft was placed over the anterior cortex of the femur and fixed
with the same technique as in group 4. All models were then subjected to rotational and axial cyclical stiffness tests and load to failure to
measure and compare the mechanical strengths of the constructs.
Results: The mean stiffness values of group 4 with medial allograft, before and after cyclical loading, were higher than all other groups,
under both rotational and axial forces. The mean stiffness values of fibula autografts (groups 2 and 3) were similar to that of anterior
allografts (group 5) in each test except that the mean initial axial stiffness of group 5 was higher than group 2. Failure loads were also not
different between the groups.
Conclusion: Although the rigidity of Vancouver type B1 periprosthetic femur fractures is highest if allografts are placed medially, fibula
autografts can also provide similar fixation strengths to allografts if locking plates with unicortical and bicortical screws and cables
are used.
AU  - Sariyilmaz, Kerim
AU  - YILDIZ, FATİH
AU  - Aliyev, Orkhan
AU  - Erden, Tunay
AU  - BOZDAG, ERGUN
AU  - Tuncay, Ibrahim
AU  - SUNBULOGLU, Emin
DO  - 10.5152/j.aott.2022.21287
PY  - 2022
JO  - Acta Orthopaedica et Traumatologica Turcica
VL  - 56
IS  - 3
SN  - 1017-995X
SP  - 166
EP  - 172
DB  - TRDizin
UR  - http://search/yayin/detay/532376
ER  -