interspace of lumbar vertebrae
5.In order to maintain the stability of lumbar vertebrae and minimize the postopera tive adhesion. We have treated 54 cases of stenosis of lumbar vertebral canal using method of opening-door plasty,of which 38 cases are male and 16 female. The ages range from 32 to 63 years old averaging 48. All the 54 cases underwent X ray, CT or CTM examination before operation.
6.In OVX rats,not only bone mineral density (BMD) of lumbar vertebrae in vivo and vitro,but also BMD of femora (except for R3 region) and proximal metaphysis(R1 region) in vitro decreased obviously (P<0.01)，whose bone loss rates of L5 and L6 were the highest and achieved 13%; the trabeculae of OVX rats were few，fine, and discontinued and there were lacunae on the surface;in OVX rats,both compressive strength of vertebral bodies and the mechanical properties of femora decreased;the falling degree of the former was greater;the maximal compressive power of lumbar vertebrae decreased with 33.32%.
10.The main structure of the lumbar vertebrae could not be visualized clearly even not at all in the control radiographs. The main, structure of 15-S1 was visualized clearly in the dorsovential radiographs of the lumbosacral region made by means of intrarectal cassette. Grades of well defined(1)and evid-ent(2) were given to 89.24%(15/17)of them.
