TY - CHAP A1 - Monkman, Gareth J. A1 - Dragoi, Daniel A1 - Egersdörfer, Stefan A1 - Füchtmeier, Bernd A1 - Nerlich, Michael T1 - Der Roboter als Hilfsmittel in der Chirurgie // International Mechatronik Forum, Linz, October 2006 T2 - International Mechatronik Forum, Linz Y1 - 2006 ER - TY - GEN A1 - Füchtmeier, Bernd A1 - Nerlich, Michael A1 - Monkman, Gareth J. A1 - Egersdörfer, Stefan A1 - Raja, Kashif T1 - Development of a Robotic Navigation and Fracture Fixation System - 7th Intl. Conf. Medical Aspects of Telemedicine, 23 September 2002 T2 - European Journal of Medical Research; Abstracts Y1 - 2002 SN - 2047-783X SP - 28 EP - 29 PB - Biomed Central CY - London ER - TY - GEN A1 - Füchtmeier, Bernd A1 - Egersdörfer, Stefan A1 - Monkman, Gareth J. A1 - Nerlich, Michael T1 - Entwicklung eines Systems zur navigierten und robotergestützten Frakturfixation T2 - Zweite Jahrestagung der Deutschen Gesellschaft für Computer- und Roboterassistierte Chirurgie : 4.-7. November 2003, Nürnberg, Germany; CURAC 2003; Abstract CD-ROM Y1 - 2003 CY - Erlangen-Nürnberg ER - TY - CHAP A1 - Nerlich, Michael A1 - Monkman, Gareth J. A1 - Füchtmeier, Bernd A1 - Egersdörfer, Stefan T1 - Development of a Robotic Navigation and Fracture Fixation System T2 - 1. Jahrestagung der Deutschen Gesellschaft für Computer- und Roboterassistierte Chirurgie (CURAC), Leipzig, 2002 Y1 - 2002 ER - TY - JOUR A1 - Füchtmeier, Bernd A1 - Egersdoerfer, Stefan A1 - Mai, Ronny A1 - Hente, Rainer A1 - Dragoi, Daniel A1 - Monkman, Gareth J. A1 - Nerlich, Michael T1 - Reduction of femoral shaft fractures in vitro by a new developed reduction robot system "RepoRobo" JF - Injury N2 - Closed reduction of the long bones is associated with the use of considerable force. This force must be maintained for the reduction maneuver and fixation process. At present, apart from the extension table or the large AO distractor, only rather inadequate reduction aids are available. A solution to this problem is being sought in the form of a robotic system with which precision can be improved and the holding effort reduced. In the research project presented here, a synthetic femur with integrated tensioned mainspring and a 32-A3 type fracture served as a bone reduction model. The fracture was stabilized with a standard AO fixator. A Stäubli robot (model RX130) was converted by appropriate modification so that it could be used for the reduction of femoral shaft fractures in vitro. The robot was equipped with a pneumatic 2-fingered gripper, on which the fingers have been modified so that they can grip the AO fixator clamp. A Force-Feedback-Sensor was inserted between the gripper and the robot to obtain online recordings of the forces and moments in all three axes. With this setup it is possible to achieve precise reduction of the fracture in all planes under visual control. KW - Fracture reduction KW - reduction robot KW - RepoRobo Y1 - 2004 U6 - https://doi.org/10.1016/j.injury.2004.05.019 SN - 1879-0267 SN - 0020-1383 VL - 35 IS - 1, Supplement SP - 113 EP - 119 PB - Elsevier ER - TY - JOUR A1 - Egersdoerfer, Stefan A1 - Dragoi, Daniel A1 - Monkman, Gareth J. A1 - Füchtmeier, Bernd A1 - Nerlich, Michael T1 - Heavy duty robotic precision fracture repositioning JF - Industrial Robot N2 - The application of robotics in manufacturing industry is increasingly spreading to other fields such as service, security and medical, and more recently into orthopedic surgery. Most research projects to date have concentrated on the lighter side of non‐invasive surgery, camera, laser guidance, light cutting and milling through bone. Just as in industrial production and processing applications, the choice of robot and its accompanying control and programming system is absolutely paramount. This simple fact has been justified in recent research dealing with the heavier forms of fracture repositioning robotics in accident surgery. This paper discusses the development of the complete system including robot, end‐effector and sensors. Y1 - 2004 U6 - https://doi.org/10.1108/01439910410566344 SN - 0143-991X VL - 31 IS - 6 SP - 488 EP - 492 PB - Emerald ER - TY - CHAP A1 - Füchtmeier, Bernd A1 - Egersdörfer, Stefan A1 - Tuma, G. A1 - Monkman, Gareth J. A1 - Nerlich, Michael ED - Nerlich, Michael ED - Schächinger, Ulrich T1 - Development of a Robotic Navigation and Fracture Fixation System T2 - Integration of Health Telematics into Medical Practice Y1 - 2003 SP - 43 EP - 49 PB - IOS Press ER - TY - JOUR A1 - Lenich, Andreas A1 - Bachmeier, S. A1 - Dendorfer, Sebastian A1 - Mayr, E. A1 - Nerlich, Michael A1 - Füchtmeier, Bernd T1 - Development of a test system to analyze different hip fracture osteosyntheses under simulated walking JF - Biomedizinische Technik. Biomedical engineering N2 - The mechanical complications of osteosyntheses after hip fractures are previously investigated by mostly static or dynamic uniaxial loading test systems. However, the physiologic loading of the hip joint during a normal gait is a multiplanar, dynamic movement. Therefore, we constructed a system to test osteosyntheses for hip fractures under physiologic multiplanar loading representative of normal gait. To evaluate the testing system, 12 femora pairs were tested under 25,000 cycles with two standard osteosyntheses (Proximal Femoral Nail Antirotation/Gamma3 Nail). For angular movement, the varus collapse to cut out (∝CO) (∝CO=4.8°±2.1° for blade and ∝CO=7.8°±3.8° for screw) was the dominant failure mode, and only slight rotational angle shifts (∝Rot) (∝Rot=1.7°±0.4° for blade and ∝Rot=2.4°±0.3° for screw) of the femoral head around the implant axis were observed. Angular displacements in varus direction and rotation were higher in specimens reinforced with screws. Hence, the cut out model and the migration directions showed a distinction between helical blade and hip screw. However, there were no significant differences between the different implants. The new setup is able to create clinical failures and allows to give evidence about the anchorage stability of different implant types under dynamic gait motion pattern. KW - biomechanical implant test KW - dynamic multiplanar loading KW - hip fractureg KW - implant migration KW - patient specific loading KW - Hüftgelenk KW - Knochenbruch KW - Osteosynthese KW - Bewegungsanalyse KW - Simulation Y1 - 2012 U6 - https://doi.org/10.1515/bmt-2011-0999 VL - 57 IS - 2 SP - 113 EP - 119 ER -