A laboratory investigation to assess the influence of cement augmentation of screw and plate fixation in a simulation of distal femoral fracture of osteoporotic and non-osteoporotic bone

• DOI: 10.1302/0301-620x.95b10.31220
• Publication Date: 2013-09-27T15:59:25Z
• Authors: D. Wähnert; J. H. Lange; M. Schulze; D. Gehweiler; C. Kösters; M. J. Raschke
• Keywords: Bone cement; Biomechanics

The augmentation of fixation with bone cement is increasingly being used in the treatment severe osteoporotic fractures. We investigated influence quality on mechanics plate a distal femoral fracture model (AO 33 A3 type). Eight and eight non-osteoporotic models were randomly assigned to either an augmented or non-augmented group. Fixation was performed using locking compression plate. In group additionally 1 ml injected into screw hole before insertion screw. Biomechanical testing axial sinusoidal loading. Augmentation significantly reduced cut-out distance by about 67% (non-augmented mean 0.30 mm (sd 0.08) vs 0.13 0.06); p = 0.017). There no statistical reduction this following 0.15 0.02) 0.07); 0.915). models, increased stability (p