The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform
D Barrette - One of the best experts on this subject based on the ideXlab platform.
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Stryker frame adaptation of the hm3 lithotriptor for treatment of distal ureteral calculi
The Journal of Urology, 1994Co-Authors: R J Leveillee, August Zabbo, D BarretteAbstract:AbstractTreatment of distal ureteral stones with the Dornier HM3 lithotriptor**Dornier Medical Systems Inc., Marietta, Georgia. depends on the localization and positioning of the calculus from a transgluteal approach. We found the Stryker frame gantry modification preferable to the standard gantry for treatment of stones in the distal ureter. We report the use of this gantry adaptation in 22 cases of distal ureteral stones. The calculi were localized in 100% of the cases and were fragmented successfully with 1 treatment in 89%. In no case was the procedure aborted secondary to nonvisualization of the calculus. Failure to disintegrate the stone requiring retreatment occurred in 11% of the cases, and was attributed to stone characteristics and not due to difficulty with visualization or placement of the calculus within the F2 focus. The average fluoroscopic time was 45seconds. The Stryker frame modification to the standard Dornier HM3 lithotriptor allows for improved visualization and easier localization of...
Timothy M Wright - One of the best experts on this subject based on the ideXlab platform.
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that s why we call it biomechanics commentary on an article by h john cooper md et al adverse local tissue reaction arising from corrosion at the femoral neck body junction in a dual taper stem with a cobalt chromium modular neck
Journal of Bone and Joint Surgery American Volume, 2013Co-Authors: Douglas E Padgett, Timothy M WrightAbstract:The introduction of total hip arthroplasty, in its modern form, by Sir John Charnley has been one of the most impactful medical advances of the last century, providing patients with pain relief, improved function, and better quality of life. Since then, surgeons and engineers have sought to improve surgical techniques and prosthetic designs and materials in an attempt to make a great intervention even better. The use of modularity, particularly at the femoral stem-neck junction, was an attempt to reproduce femoral offset and version and to restore limb length apart from stem fixation and appeared attractive in concept. Initial bench testing by Viceconti et al.1 demonstrated minimal fretting and no evidence of corrosion at the taper junctions. These findings, coupled with the long-term success of a predicate modular stem, the S-ROM (DePuy, Warsaw, Indiana)2, seemed to assuage the fears of failure related to these junctions. Despite little data to support any improvement in clinical outcomes, modular hip stems were introduced into the marketplace and their use was embraced by many. This recent disturbing report by Cooper and associates represents a collaborative multicenter effort3 detailing a series of eleven patients (a total of twelve hips) who underwent primary cementless total hip arthroplasty employing a modular femoral stem design (Rejuvenate; Stryker, Mahwah, New Jersey) consisting of a titanium-molybdenum-zirconium-iron alloy body (TMZF; Stryker) mated with a modular cobalt-chromium …
R J Leveillee - One of the best experts on this subject based on the ideXlab platform.
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Stryker frame adaptation of the hm3 lithotriptor for treatment of distal ureteral calculi
The Journal of Urology, 1994Co-Authors: R J Leveillee, August Zabbo, D BarretteAbstract:AbstractTreatment of distal ureteral stones with the Dornier HM3 lithotriptor**Dornier Medical Systems Inc., Marietta, Georgia. depends on the localization and positioning of the calculus from a transgluteal approach. We found the Stryker frame gantry modification preferable to the standard gantry for treatment of stones in the distal ureter. We report the use of this gantry adaptation in 22 cases of distal ureteral stones. The calculi were localized in 100% of the cases and were fragmented successfully with 1 treatment in 89%. In no case was the procedure aborted secondary to nonvisualization of the calculus. Failure to disintegrate the stone requiring retreatment occurred in 11% of the cases, and was attributed to stone characteristics and not due to difficulty with visualization or placement of the calculus within the F2 focus. The average fluoroscopic time was 45seconds. The Stryker frame modification to the standard Dornier HM3 lithotriptor allows for improved visualization and easier localization of...
Douglas E Padgett - One of the best experts on this subject based on the ideXlab platform.
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that s why we call it biomechanics commentary on an article by h john cooper md et al adverse local tissue reaction arising from corrosion at the femoral neck body junction in a dual taper stem with a cobalt chromium modular neck
Journal of Bone and Joint Surgery American Volume, 2013Co-Authors: Douglas E Padgett, Timothy M WrightAbstract:The introduction of total hip arthroplasty, in its modern form, by Sir John Charnley has been one of the most impactful medical advances of the last century, providing patients with pain relief, improved function, and better quality of life. Since then, surgeons and engineers have sought to improve surgical techniques and prosthetic designs and materials in an attempt to make a great intervention even better. The use of modularity, particularly at the femoral stem-neck junction, was an attempt to reproduce femoral offset and version and to restore limb length apart from stem fixation and appeared attractive in concept. Initial bench testing by Viceconti et al.1 demonstrated minimal fretting and no evidence of corrosion at the taper junctions. These findings, coupled with the long-term success of a predicate modular stem, the S-ROM (DePuy, Warsaw, Indiana)2, seemed to assuage the fears of failure related to these junctions. Despite little data to support any improvement in clinical outcomes, modular hip stems were introduced into the marketplace and their use was embraced by many. This recent disturbing report by Cooper and associates represents a collaborative multicenter effort3 detailing a series of eleven patients (a total of twelve hips) who underwent primary cementless total hip arthroplasty employing a modular femoral stem design (Rejuvenate; Stryker, Mahwah, New Jersey) consisting of a titanium-molybdenum-zirconium-iron alloy body (TMZF; Stryker) mated with a modular cobalt-chromium …
George Y. Laflamme - One of the best experts on this subject based on the ideXlab platform.
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initial tension loss in cerclage cables
Journal of Arthroplasty, 2013Co-Authors: Jérémie Ménard, Maxime Émard, Fanny Canet, Vladimir Brailovski, Yvan Petit, George Y. LaflammeAbstract:Cerclage cables, frequently used in the management of fractures and osteotomies, are associated with a high failure rate and significant loosening during surgery. This study compared the capacity to maintain tension of different types of orthopaedic cable systems. Multifilament Cobalt-Chrome (CoCr) cables with four different crimp/clamp devices (DePuy, Stryker, Zimmer and Smith&Nephew) and one non-metallic Nylon (Ny) cable from Kinamed were instrumented with a load cell to measure tension during insertion. Significant tension loss was observed with crimping for all cables (P<0.05). Removing the tensioner led to an additional unexpected tension loss (CoCr-DePuy: 18%, CoCr-Stryker: 29%, CoCr-Smith&Nephew: 33%, Ny: 46%, and CoCr-Zimmer: 52%). The simple CoCr (DePuy) cable system outperformed the more sophisticated locking devices due to its significantly better ability to prevent tension loss.
