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Secondary Reconstruction (secondary + reconstruction)

Distribution by Scientific Domains

Medical Sciences	50%

Selected Abstracts

LYSTROSAURUS MURRAYI (THERAPSIDA, DICYNODONTIA): BONE HISTOLOGY, GROWTH AND LIFESTYLE ADAPTATIONS

PALAEONTOLOGY, Issue 6 2005
SANGHAMITRA RAY
Abstract:, Examination of the bone microstructure of Lystrosaurus murrayi from India and South Africa reveals a predominance of fibrolamellar bone tissue, which suggests rapid periosteal osteogenesis and an overall fast growth. Four distinct ontogenetic stages have been identified based on tissue type, organization of the primary osteons, incidence of growth rings, secondary reconstruction and endosteal bone deposition. An indeterminate growth strategy is proposed for Lystrosaurus. Inter-elemental histovariability suggests differential growth rate of the skeletal elements within the same individual, and among different individuals. The high cortical thickness of the dorsal ribs, an extensive secondary reconstruction in the cortical region of different skeletal elements that resulted in erosionally enlarged channels from the perimedullary to the midcortical region, and trabecular infilling of the medullary region even in the diaphyseal sections of the limb bones suggest at least a semi-aquatic lifestyle for L. murrayi. [source]

Selection of recipient vessels in microsurgical free tissue reconstruction of head and neck defects

MICROSURGERY, Issue 7 2007
Sukru Yazar M.D.
The development of microsurgical techniques has facilitated proper management of extensive head and neck defects and deformities. Bone or soft tissue can be selected to permit reconstruction with functional and aesthetic results. However, for free tissue transfer to be successful, proper selection of receipient vessels is as essential as the many other factors that affect the final result. In this article selection strategies for recipient vessels for osteocutaneous free flaps, soft tissue free flaps, previously dissected and irradiated areas, recurrent and subsequent secondary reconstructions, simultaneous double free flap transfers in reconstruction of extensive composite head and neck defects, and the selection of recipient veins are reviewed in order to provide an algorithm for the selection of recipient vessels for head and neck reconstruction. © 2007 Wiley-Liss, Inc. Microsurgery, 2007. [source]

Computer-assisted therapy in orbital and mid-facial reconstructions

THE INTERNATIONAL JOURNAL OF MEDICAL ROBOTICS AND COMPUTER ASSISTED SURGERY, Issue 2 2009
A. Schramm
Abstract Background Management of orbital and mid-facial fractures requires a thorough ophthalmic evaluation and precise imaging. A principle goal of therapy is to anatomically reduce fracture segments and to restore a normal orbital volume as soon as possible. Diagnostic advances such as new surgical and imaging techniques have dramatically improved both the functional and aesthetic outcome of reconstructions. Methods Orbital reconstruction is performed using computer-assisted navigation. This technique makes preoperative simulation by mirroring the unaffected side onto the affected side. Results Results from computer-assisted navigation application to both primary and secondary orbital and mid-facial reconstruction are shown. Conclusion Navigation technique it offers significant advantages in both primary and secondary reconstructions. Navigation facilitates reconstruction in unilateral defects through mirroring techniques, and in bilateral defects by importing virtual models from standard CT datasets improving the software tool to fulfil the need for maxillofacial surgery reconstruction. Copyright © 2009 John Wiley & Sons, Ltd. [source]