Torque forces of expandable titanium vertebral body replacement cages during expansion and subsidence in the osteoporotic lumbar spine

The use of expandable titanium-cages for vertebral body replacement seems to be a primarily safe procedure even within the osteoporotic spine as torque forces required for subsidence of cages are nearly three times higher than those needed for fixation. Most of the expansion load is absorbed by straining of the dorsal instrumentation. Rod materials other than titanium may alter the torque forces found in this study.

Source: Clinical Biomechanics - April 8, 2024 Category: Orthopaedics Authors: Krishnan Sircar, Maximilian Weber, Sebastian G. Walter, Nadine Ott, Andreas Prescher, Peer Eysel, Nikolaus Kernich Source Type: research