Background. Postoperative C5 motor palsy is known as a common complication not only after cervical laminectomy but also after anterior discectomy. There is no consensus to verify any of the proposed mechanisms of C5 palsy following posterior cervical decompression. The authors of this article have found that C5 palsy is more common among patients with smaller C5 root exit foramen area. The purp...

Study Design Retrospective case series. Objectives The kinematics of the cervical spine has been investigated by many researchers. However, the occupancy of the disk bulges, spinal cord, ligamentum flavum, and the rest of the canal as well as the changes of these structures with motion have not yet been investigated. The goal of this study is to investigate these dynamic changes. Methods The ki...

The human hepatoma-derived cell line, HepG2, synthesized and secreted functional complement proteins C1r, C1s, C2, C3, C4, C5, factor B, C1 inhibitor, C3b inactivator, a small amount of C6, and trace amounts of C8; but failed to produce detectable C1q, C7, or C9. Immunochemically, C2, C3, C4, C5, and B were isolated from culture medium as proteins with molecular sizes and subunit structures ide...

OBJECTIVE The purpose of this study was to elucidate the pathological characteristics of C3-C4 cervical spondylotic myelopathy (CSM) from the radiological study. MATERIALS AND METHODS A total of 31 patients with single level anterior cervical discectomy and fusion (ACDF) at C3-C4 and 46 patients with single level ACDF at C5-C6 were included in this study. We selected C5-C6 level as a represen...

two bonding models i.e cumullenic and acetylenic models have been proposed to account for thebonding patterns in linear carbon clusters while the bonding patterns in cyclic and 3d geometries of theseclusters have remained ambiguous.this work presents the bonding patterns in various c4 and c5 pure clusters at mp2/aug-cc-pvtz level oftheory. this subject is studied in the light of modern bonding ...

A phylogenetic analysis of DNA sequences from the C3/C4/C5 complement-component family of vertebrates supported the hypothesis that the C5 gene diverged first from the common ancestor of C3 and C4 and that C3 and C4 diverged later. The close relationship of C3 and C4 was further supported by the fact that a hagfish complement-component gene showed evidence of being more closely related to both ...