Resumen de Formación de hueso esponjoso con esferas microcompartimentales
M.E. Draenert, Y. Draenert, K. Draenert, Tim Pohlemann, M. Erler
Objectives The question has been raised whether benign bone defects in patients can be treated with bone forming osteoconductive ceramics achieving primarily a cancellous bone scaffold, which is under load from the beginning.
Materials and methods Ten reconstructions were performed in 9 patients (6 women and 3 male), with a mean age of 49 (25�65) years, suffering a high variety of epi- and metaphyseal defects, four tibial fractures, two calcaneal fractures, one pathological phalangeal fracture, one chondroma of the distal femur and two open-wedge osteotomies were filled with micro-chambered ceramic beads of 4 and 6 mm in diameter. The mean follow-up was 22 (7�8) months. X-rays and CT-scans formed the basis for the evaluation of the reconstruction of the cancellous bone scaffolds.
Results All cancellous structures were rebuilt, if completely filled with bone-forming elements. If the filling was incomplete, no physiological cancellous bone scaffold resulted. The ß-TCP micro-chambered beads were completely reabsorbed or sandwich-like incorporated at the time of evaluation. The HA micro-chambered beads revealed a contrast enhancement and were integrated in the osseous construction of the bone scaffold.
Conclusion Primary cancellous bone formation can be achieved with osteoconductive ceramic micro-chambered beads and can be combined with any osteosynthesis for stable fixation.
