OBJECTIVE: To compare the mechanical stability of a medial tibial plateau fracture model secured with a lateral locking periarticular plate versus a medial buttress plate in cyclic testing and load to failure. METHODS: Medial tibial plateau fractures were created in 6 matched pairs of fresh cadaveric tibias. In each pair of tibias, 1 side was randomly selected to be fixed with a lateral locking plate on 1 side and the contralateral limb to be fixed with a medial buttress plate. The fixated tibias then underwent cyclic testing followed by single-cycle failure compressive loading. Displacement of the medial tibial plateau was measured in both cyclic and failure testing. RESULTS: Statistical analyses revealed relevant trends in fixation strength during cyclic testing, but neither the mean maximum displacement during nor mean residual displacement after cyclic testing were statistically different between the 2 fixation techniques. Statistically significant differences were observed for the mean forces to failure however. The medial buttress plate construct provided greater fixation strength with its failure force of 4136 +/- 1469 N compared with the lateral locking plate mean failure force of 2895 +/- 1237 N (P < 0.05). CONCLUSION: In the setting of a vertically oriented fracture in a medial tibial plateau without comminution, the medial buttress plate provides significantly greater stability in static loading, and a trend toward improved stability with cyclic loading. Clinical correlation is necessary to substantiate these findings.
OBJECTIVE: To compare the mechanical stability of a medial tibial plateau fracture model secured with a lateral locking periarticular plate versus a medial buttress plate in cyclic testing and load to failure. METHODS: Medial tibial plateau fractures were created in 6 matched pairs of fresh cadaveric tibias. In each pair of tibias, 1 side was randomly selected to be fixed with a lateral locking plate on 1 side and the contralateral limb to be fixed with a medial buttress plate. The fixated tibias then underwent cyclic testing followed by single-cycle failure compressive loading. Displacement of the medial tibial plateau was measured in both cyclic and failure testing. RESULTS: Statistical analyses revealed relevant trends in fixation strength during cyclic testing, but neither the mean maximum displacement during nor mean residual displacement after cyclic testing were statistically different between the 2 fixation techniques. Statistically significant differences were observed for the mean forces to failure however. The medial buttress plate construct provided greater fixation strength with its failure force of 4136 +/- 1469 N compared with the lateral locking plate mean failure force of 2895 +/- 1237 N (P < 0.05). CONCLUSION: In the setting of a vertically oriented fracture in a medial tibial plateau without comminution, the medial buttress plate provides significantly greater stability in static loading, and a trend toward improved stability with cyclic loading. Clinical correlation is necessary to substantiate these findings.
Authors: Matthieu Ehlinger; Benjamin Adamczewski; Michel Rahmé; Philippe Adam; Francois Bonnomet Journal: Int Orthop Date: 2015-03-08 Impact factor: 3.075
Authors: Ion Carrera; Pablo Eduardo Gelber; Gaetan Chary; Miguel A González-Ballester; Juan Carlos Monllau; Jerome Noailly Journal: Int Orthop Date: 2016-01-16 Impact factor: 3.075
Authors: Vassilios S Nikolaou; Hiang Boon Tan; George Haidukewych; Nikolaos Kanakaris; Peter V Giannoudis Journal: Int Orthop Date: 2010-11-25 Impact factor: 3.075