Biomedical subjects
Publications and source records attributed to Thomas-Marc Markwalder.
Experience indicates that stand-alone cages may lack the necessary stability to secure highly unstable motion segments at the lumbosacral junction. The authors have designed a special carbon fiber composite interbody cage that allows additional screw placement in anterior lumbar interbody fusion procedures performed at the lumbosacral junction.
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Only recently, vertebroplasty (VP) and kyphoplasty (KP) were introduced in the treatment of lesions of the vertebral body (VB). Most frequently, osteoporotic fractures (VP, KP) and metastases (VP) are treated in highly selected patients. These methods consist of polymethylmethacrylat (PMMA) injection into the VB usually through transpedicular canulas. In KP a coaxial balloon creates a cavity within the vertebral body, thus restoring some of the original VB height before cement injection. Consistently, these methods result in favourable outcomes. However, because of possible cement leakage and subsequent neurocompression with permanent damage, we advocate our surgical approach with prophylactic interlaminar fenestration prior to VP.