Newly designed anterolateral and posterolateral locking anatomic plates for lateral tibial plateau fractures: a finite element study.
J Orthop Surg Res
; 12(1): 35, 2017 Feb 23.
Article
in En
| MEDLINE
| ID: mdl-28231839
ABSTRACT
BACKGROUND:
Lateral column tibial plateau fracture fixation with a locking screw plate has higher mechanical stability than other fixation methods. The objectives of the present study were to introduce two newly designed locking anatomic plates for lateral tibial plateau fracture and to demonstrate their characteristics of the fixation complexes under the axial loads.METHODS:
Three different 3D finite element models of the lateral tibial plateau fracture with the bone plates were created. Various axial forces (100, 500, 1000, and 1500 N) were applied to simulate the axial compressive load on an adult knee during daily life. The equivalent maps of displacement and stress were output, and relative displacement was calculated along the fracture lines.RESULTS:
The displacement and stresses in the fixation complexes increased with the axial force. The equivalent displacement or stress map of each fixation under different axial forces showed similar distributing characteristics. The motion characteristics of the three models differed, and the max-shear stress of trabecula increased with the axial load.CONCLUSIONS:
These two novel plates could fix lateral tibial plateau fractures involving anterolateral and posterolateral fragments. Motions after open reduction and stable internal fixation should be advised to decrease the risk of trabecular microfracture. The relative displacement of the posterolateral fragments is different when using anterolateral plate and posterolateral plate, which should be considered in choosing the implants for different posterolateral plateau fractures.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Tibial Fractures
/
Bone Plates
/
Fracture Fixation, Internal
Type of study:
Prognostic_studies
Limits:
Adult
/
Humans
/
Male
Language:
En
Journal:
J Orthop Surg Res
Year:
2017
Document type:
Article
Affiliation country:
China