219 research outputs found
The importance to generate robotically milled cavities for total hip implantation. Experimental study: Hand broaching versus robotic bone preparation
No full textWe present an experimental study to determine the effectiveness of computer assisted robotic bone preparation with regard to primary rotational stability in comparison to hand broaching. 5 different cementless stems were standardized implanted in synthetic femora and measured in a specially designed apparatus (displacement in 6 degrees of freedom). In addition the contact areas of the stems and the bone were visualized. The S-ROM- and ABG-stems were more stable in hand broached femora. The Osteolock-, G(2)- and Vision-2000-stems were more stable in the robot group. The mode of fixation of each implant could be characterized in relation to its position and its stiffness (primary rotational stability). The contact areas differed in some prosthesis in the way of preparation. The findings highlight the current difficulties in creating a perfect match of robotically milled cavity and stem geometry to achieve enhanced stability
Robotically-milled bone cavities - A comparison with hand-broaching in different types of cementless hip stems
No full textWe performed an experimental study to compare the effectiveness of robotic bone milling (Robodoc and CASPAR) with hand-broaching as regards primary rotational stability of 7 different cementless stems. Using 48 synthetic femora and a specially-designed apparatus, we compared the implant stability of proximal and distal rotational stem displacement (slip) in relation to the cortex. We also measured stem deformation (twist) and the location of torque transfer from stem to cortex (i.e., fixation pattern). S-ROM, Antega, and ABG stems were more stable in hand-broached femora. Osteolock stems showed no difference between CASPAR and hand preparation, but rotational stability was better in the Robodoc group. G(2), VerSys ET and Vision 2000 stems gave increased rotational stability in the robotic groups. When placed too laterally, Vision 2000 showed a pattern of more distal fixation. The findings emphasize the current difficulties in creating a perfect match of robotically-milled cavity and stem geometry to achieve enhanced primary rotational stability. The pattern of fixation seems to depend not only on stem design, but also on canal preparation and stem positioning
Scabbard and Blade, Honorary Military Fraternity (1929 - 1930)
No full textBack Row: Bieber, Edmund E.; Belt, John H.; Snyder, William H.; Bortner, Palmer C.; Hallock, Maynard C.; Aldinger, William W.; Gross, Harry H.; Reighter, Edward S.; Liesman, Justus H.; Billman, George L.; Front Row: Morris, Captain W. S.; Ringwald, Gustave A.; Lack, C. Lester; Kadel, G. Welty; Mc Reynolds, Captain W. R.Removed from album on May 4, 1993
Scabbard and Blade, Honorary Military Fraternity (1929 - 1930)
No full textBack Row: Bieber, Edmund E.; Belt, John H.; Snyder, William H.; Bortner, Palmer C.; Hallock, Maynard C.; Aldinger, William W.; Gross, Harry H.; Reighter, Edward S.; Liesman, Justus H.; Billman, George L.; Front Row: Morris, Captain W. S.; Ringwald, Gustave A.; Lack, C. Lester; Kadel, G. Welty; Mc Reynolds, Captain W. R.Removed from album on May 4, 1993
Reappraisal of the lower actinopterygian Birgeria stensioei Aldinger, 1931 (Osteichthyes; Birgeriidae) from the Middle Triassic of Monte San Giorgio (Switzerland) and Besano (Italy)
No full textClassic descriptions and a previous reconstruction of the Middle Triassic ray-finned fish Birgeria stensioei Aldinger, 1931 from the Besano Formation (= Grenzbitumenzone) of Monte San Giorgio (Canton Ticino, Switzerland) and Besano (Lombardy, Italy) relied either on poor material or on a single specimen only. This study of B. stensioei is based on 67 specimens from that region in the Southern Alps including the lectotype of B. stensioei. The reappraisal of B. stensioei indicates that this species differs from the other known species of the genus Birgeria in several respects, most notably in the arrangement of the pterygiophores of the dorsal fin. B. stensioei is also distinct to certain other species of Birgeria in having a largely unossified brain case. Furthermore, the palatoquadrate of B. stensioei is ossified as the autopalatine, the metapterygoid and the quadrate, which are always found separate. An ossified autopalatine and metapterygoid was not described in Birgeria so far. A dermohyal is developed in B. stensioei and this bone is probably also present in the other species of the genus Birgeria
Aldinger, Mary (Death, 1905-02-24)
No full textAddress: City Hospital 822 Whittier St.Age at death: 33 yrs.Pg 25/0601/1905/F W M/City/Dr. Otis L. Cameron/Coroner/Ben Meyer/St. Joseph OldOriginal record filed in drawer labeled'AHREN-ALEXANDER'
Aldinger, Rudolph (Death, 1876-05-03)
No full textAddress: 113 Sycamore St.Age at death: 7moPg 135/1876/80/M W S/City/Dr. W. Stark/J. Fuldner/Walnut HillsOriginal record filed in drawer labeled'AHREN-ALEXANDER'
Sceptical Chymists, College Chemistry Society (1929 - 1930)
No full textBack Row: Stark, John W.; Philson, S. R.; Slaybaugh, Carl C.; Herman, Frederick W.; Stare, Edward W.; Boone, Paul W.; Sowers, John W.; Shively, R. D.; Bentz, Clair A.; Ebbert, W. W.; Second Row: Small, Donald E.; Smith, C.; Barclay, Harry T.; Fisher, E. M.; Schildknecht, C. E.; Smith, Forrest F.; Bonsignore, Marcus R.; Heckman, M. A.; Jacobs, George W.; Johnson, C. Harold; Burkholder, Harry M.; Himes, Norman H.; Henkle, John R.; Front Row: Aldinger, William W.; Coshun, Chester W.; Swartz, Thomas H.; Slaybaugh, Earl E.; Sloat, Prof. Charles A.; Morris, Harold B.; Keslar, Leroy D.; Frisbee, Frederic J.; Reighter, Kenneth M.Removed from album on May 4, 1993
Phi Beta Kappa, National Honorary Scholastic Fraternity (1929 - 1930)
No full textBack Row: Greenholt, Professor Reginald H.; Tabor, L. Ralph; Wagner, Professor John F.; Aldinger, William W.; Sellers, Charles C.; Birx, Charles; Morris, Harold B.; Front Row: Davies, William V. H.; Herman, Stewart W.; Yost, Merrill C.; Valentine, Dr. Milton Henry; Stahley, Dr. George D.; Saby, Dr. Rasmus S.; Richards, Melba L.; Stallsmith, Helen K.; Mason, Dr. Francis C.Removed from album on May 4, 1993. 1931 Spectrum
Aldinger, Henry E. (Birth, 1891-07-17)
No full textAddress: 60 Dennis St.4822/Pg. 135/1891/M W/Cinti O./Cinti. O./Mrs. Mary Zeltner - midwifeOriginal record filed in drawer labeled'AHREN-ALEXANDER'
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