The Experts below are selected from a list of 1806 Experts worldwide ranked by ideXlab platform

Jae Yoon Chung - One of the best experts on this subject based on the ideXlab platform.

Thomas Muckley - One of the best experts on this subject based on the ideXlab platform.

  • biomechanical analysis of polyaxial locking vs non locking plate fixation of unstable fractures of the Distal Fibula a cadaver study with a bone only model
    Foot and Ankle Surgery, 2017
    Co-Authors: J Hallbauer, A Grafenstein, Sascha Rausch, Matthias Knobe, Paul Simons, Thomas Muckley, G O Hofmann, Kajetan Klos
    Abstract:

    Abstract Background Open reduction and internal fixation is the current standard of treatment of displaced Distal Fibula fractures, whereupon using a lag screw often is impossible because of a multifragmantary fracturezone. This study investigates in what extend polyaxial-locking plating is superior to non-locking constructs in unstable Distal Fibula fractures. Methods Seven pairs of human cadaver Fibulae were double osteotomized in standardized fashion with a 5mm gap. This gap simulated an area of comminution, where both main fragments were no longer in direct contact. One Fibula of the pair was managed using a 3.5-mm screw in a polyaxial-locking construct and the other Fibula in a non-locking construct.

  • does a polyaxial locking system confer benefits for osteosynthesis of the Distal Fibula a cadaver study
    Orthopaedics & Traumatology-surgery & Research, 2016
    Co-Authors: J Hallbauer, A Grafenstein, Sascha Rausch, Paul Simons, Thomas Muckley, Kajetan Klos, G O Hofmann
    Abstract:

    Abstract Background In plate osteosynthesis involving the Distal Fibula, antiglide plating is superior to lateral plating in terms of the biomechanical properties. The goal of this study was to examine whether polyaxial-locking implants confer additional benefits in terms of biomechanical stability. Methods Seven pairs of human cadaveric Fibulae were subjected to osteotomy in a standardized manner to simulate an uncomplicated Weber B fracture. The generated fractures were managed with a dorsolateral antiglide plate. To this end, one Fibula of the pair was subjected to non-locking plating and the other to polyaxial-locking plating. Biomechanical tests included quantification of the primary bending and torsional stiffness. In addition, the number of cycles to failure in cyclic bending loading were determined and compared. Bone mineral density was measured in all specimens. Results Bone mineral density was comparable in both groups. Primary stability was higher in the polyaxial-locking group under torsional loading, and higher in the non-locking group under bending loading. The differences, however, were not statistically significant. All specimens except for one fixed-angle construct failed the cyclic loading test. The number of cycles to failure did not differ significantly between polyaxial-locking and non-locking fixation. Conclusion In a cadaveric Weber B fracture model, we observed no differences in biomechanical properties between polyaxial-locking and non-locking fixation using an antiglide plate. Based on the biomechanical considerations, no recommendation can be made regarding the choice of the implant. Further biomechanical and clinical studies are required. Clinical relevance Information on the behavior of polyaxial-locking plates is relevant to surgeons performing internal fixation of Distal Fibula fractures.

  • biomechanical comparison of a lateral polyaxial locking plate with a posterolateral polyaxial locking plate applied to the Distal Fibula
    Foot and Ankle Surgery, 2014
    Co-Authors: J Hallbauer, A Grafenstein, Sascha Rausch, G O Hofmann, Kajetan Klos, Felix Wipf, Claudia Beimel, Thomas Muckley
    Abstract:

    Abstract Background Polyaxial locking plates are becoming popular for the fixation of Distal Fibula fractures. This study establishes how construct stiffness and plate loosening, measured as range of motion, differs between lateral and posterolateral plate location. Methods Seven matched pairs of cadaver Fibulae were osteotomized in standardized fashion to produce a Weber type B Distal Fibula fracture. The fragments were fixated with an interfragmentary lag screw and polyaxial locking plates, with one Fibula in each pair receiving a posterolateral anti-glide-plate, and the other a lateral neutralization-plate. In a biomechanical test, the bending and torsional stiffnesses of the constructs and the ranges of motion (ROM) were measured and subjected to a paired comparison. Results The laterally plated group had a higher median (interquartile range) bending stiffness (29.2 (19.7)N/mm) and a smaller range of motion (2.06 (1.99)mm) than the posterolaterally plated group (14.6 (20.6)N/mm, and 4.11 (3.28)mm, respectively); however, the results were not statistically significant ( p bending =0.314; p ROM =0.325). Similarly, the torsional stiffness did not differ significantly between the two groups (laterally plated: 426 (259)Nmm/°; posterolaterally plated: 248 (399)Nmm/°; p torsion =0.900). The range of motion measurements between the two groups under torsional loading were also statistically insignificant (laterally plated: 8.88 (6.30)mm; posterolaterally plated: 15.34 (12.64)mm; p ROM =0.900). Conclusion In biomechanical cadaver-model tests of Weber type B fracture fixation with polyaxial locking plates, laterally plated constructs and posterolaterally plated constructs performed without significantly difference. Therefore, other considerations, such as access morbidity, associated injuries, patient anatomy, or surgeon's preference, may guide the choice of plating pattern. Further clinical studies will be needed for the establishment of definitive recommendations. Clinical relevance : Information on the behavior of polyaxial locking plates is relevant to surgeons performing internal fixation of Distal Fibula fractures.

Kajetan Klos - One of the best experts on this subject based on the ideXlab platform.

  • biomechanical analysis of polyaxial locking vs non locking plate fixation of unstable fractures of the Distal Fibula a cadaver study with a bone only model
    Foot and Ankle Surgery, 2017
    Co-Authors: J Hallbauer, A Grafenstein, Sascha Rausch, Matthias Knobe, Paul Simons, Thomas Muckley, G O Hofmann, Kajetan Klos
    Abstract:

    Abstract Background Open reduction and internal fixation is the current standard of treatment of displaced Distal Fibula fractures, whereupon using a lag screw often is impossible because of a multifragmantary fracturezone. This study investigates in what extend polyaxial-locking plating is superior to non-locking constructs in unstable Distal Fibula fractures. Methods Seven pairs of human cadaver Fibulae were double osteotomized in standardized fashion with a 5mm gap. This gap simulated an area of comminution, where both main fragments were no longer in direct contact. One Fibula of the pair was managed using a 3.5-mm screw in a polyaxial-locking construct and the other Fibula in a non-locking construct.

  • does a polyaxial locking system confer benefits for osteosynthesis of the Distal Fibula a cadaver study
    Orthopaedics & Traumatology-surgery & Research, 2016
    Co-Authors: J Hallbauer, A Grafenstein, Sascha Rausch, Paul Simons, Thomas Muckley, Kajetan Klos, G O Hofmann
    Abstract:

    Abstract Background In plate osteosynthesis involving the Distal Fibula, antiglide plating is superior to lateral plating in terms of the biomechanical properties. The goal of this study was to examine whether polyaxial-locking implants confer additional benefits in terms of biomechanical stability. Methods Seven pairs of human cadaveric Fibulae were subjected to osteotomy in a standardized manner to simulate an uncomplicated Weber B fracture. The generated fractures were managed with a dorsolateral antiglide plate. To this end, one Fibula of the pair was subjected to non-locking plating and the other to polyaxial-locking plating. Biomechanical tests included quantification of the primary bending and torsional stiffness. In addition, the number of cycles to failure in cyclic bending loading were determined and compared. Bone mineral density was measured in all specimens. Results Bone mineral density was comparable in both groups. Primary stability was higher in the polyaxial-locking group under torsional loading, and higher in the non-locking group under bending loading. The differences, however, were not statistically significant. All specimens except for one fixed-angle construct failed the cyclic loading test. The number of cycles to failure did not differ significantly between polyaxial-locking and non-locking fixation. Conclusion In a cadaveric Weber B fracture model, we observed no differences in biomechanical properties between polyaxial-locking and non-locking fixation using an antiglide plate. Based on the biomechanical considerations, no recommendation can be made regarding the choice of the implant. Further biomechanical and clinical studies are required. Clinical relevance Information on the behavior of polyaxial-locking plates is relevant to surgeons performing internal fixation of Distal Fibula fractures.

  • biomechanical comparison of a lateral polyaxial locking plate with a posterolateral polyaxial locking plate applied to the Distal Fibula
    Foot and Ankle Surgery, 2014
    Co-Authors: J Hallbauer, A Grafenstein, Sascha Rausch, G O Hofmann, Kajetan Klos, Felix Wipf, Claudia Beimel, Thomas Muckley
    Abstract:

    Abstract Background Polyaxial locking plates are becoming popular for the fixation of Distal Fibula fractures. This study establishes how construct stiffness and plate loosening, measured as range of motion, differs between lateral and posterolateral plate location. Methods Seven matched pairs of cadaver Fibulae were osteotomized in standardized fashion to produce a Weber type B Distal Fibula fracture. The fragments were fixated with an interfragmentary lag screw and polyaxial locking plates, with one Fibula in each pair receiving a posterolateral anti-glide-plate, and the other a lateral neutralization-plate. In a biomechanical test, the bending and torsional stiffnesses of the constructs and the ranges of motion (ROM) were measured and subjected to a paired comparison. Results The laterally plated group had a higher median (interquartile range) bending stiffness (29.2 (19.7)N/mm) and a smaller range of motion (2.06 (1.99)mm) than the posterolaterally plated group (14.6 (20.6)N/mm, and 4.11 (3.28)mm, respectively); however, the results were not statistically significant ( p bending =0.314; p ROM =0.325). Similarly, the torsional stiffness did not differ significantly between the two groups (laterally plated: 426 (259)Nmm/°; posterolaterally plated: 248 (399)Nmm/°; p torsion =0.900). The range of motion measurements between the two groups under torsional loading were also statistically insignificant (laterally plated: 8.88 (6.30)mm; posterolaterally plated: 15.34 (12.64)mm; p ROM =0.900). Conclusion In biomechanical cadaver-model tests of Weber type B fracture fixation with polyaxial locking plates, laterally plated constructs and posterolaterally plated constructs performed without significantly difference. Therefore, other considerations, such as access morbidity, associated injuries, patient anatomy, or surgeon's preference, may guide the choice of plating pattern. Further clinical studies will be needed for the establishment of definitive recommendations. Clinical relevance : Information on the behavior of polyaxial locking plates is relevant to surgeons performing internal fixation of Distal Fibula fractures.

J Hallbauer - One of the best experts on this subject based on the ideXlab platform.

  • biomechanical analysis of polyaxial locking vs non locking plate fixation of unstable fractures of the Distal Fibula a cadaver study with a bone only model
    Foot and Ankle Surgery, 2017
    Co-Authors: J Hallbauer, A Grafenstein, Sascha Rausch, Matthias Knobe, Paul Simons, Thomas Muckley, G O Hofmann, Kajetan Klos
    Abstract:

    Abstract Background Open reduction and internal fixation is the current standard of treatment of displaced Distal Fibula fractures, whereupon using a lag screw often is impossible because of a multifragmantary fracturezone. This study investigates in what extend polyaxial-locking plating is superior to non-locking constructs in unstable Distal Fibula fractures. Methods Seven pairs of human cadaver Fibulae were double osteotomized in standardized fashion with a 5mm gap. This gap simulated an area of comminution, where both main fragments were no longer in direct contact. One Fibula of the pair was managed using a 3.5-mm screw in a polyaxial-locking construct and the other Fibula in a non-locking construct.

  • does a polyaxial locking system confer benefits for osteosynthesis of the Distal Fibula a cadaver study
    Orthopaedics & Traumatology-surgery & Research, 2016
    Co-Authors: J Hallbauer, A Grafenstein, Sascha Rausch, Paul Simons, Thomas Muckley, Kajetan Klos, G O Hofmann
    Abstract:

    Abstract Background In plate osteosynthesis involving the Distal Fibula, antiglide plating is superior to lateral plating in terms of the biomechanical properties. The goal of this study was to examine whether polyaxial-locking implants confer additional benefits in terms of biomechanical stability. Methods Seven pairs of human cadaveric Fibulae were subjected to osteotomy in a standardized manner to simulate an uncomplicated Weber B fracture. The generated fractures were managed with a dorsolateral antiglide plate. To this end, one Fibula of the pair was subjected to non-locking plating and the other to polyaxial-locking plating. Biomechanical tests included quantification of the primary bending and torsional stiffness. In addition, the number of cycles to failure in cyclic bending loading were determined and compared. Bone mineral density was measured in all specimens. Results Bone mineral density was comparable in both groups. Primary stability was higher in the polyaxial-locking group under torsional loading, and higher in the non-locking group under bending loading. The differences, however, were not statistically significant. All specimens except for one fixed-angle construct failed the cyclic loading test. The number of cycles to failure did not differ significantly between polyaxial-locking and non-locking fixation. Conclusion In a cadaveric Weber B fracture model, we observed no differences in biomechanical properties between polyaxial-locking and non-locking fixation using an antiglide plate. Based on the biomechanical considerations, no recommendation can be made regarding the choice of the implant. Further biomechanical and clinical studies are required. Clinical relevance Information on the behavior of polyaxial-locking plates is relevant to surgeons performing internal fixation of Distal Fibula fractures.

  • biomechanical comparison of a lateral polyaxial locking plate with a posterolateral polyaxial locking plate applied to the Distal Fibula
    Foot and Ankle Surgery, 2014
    Co-Authors: J Hallbauer, A Grafenstein, Sascha Rausch, G O Hofmann, Kajetan Klos, Felix Wipf, Claudia Beimel, Thomas Muckley
    Abstract:

    Abstract Background Polyaxial locking plates are becoming popular for the fixation of Distal Fibula fractures. This study establishes how construct stiffness and plate loosening, measured as range of motion, differs between lateral and posterolateral plate location. Methods Seven matched pairs of cadaver Fibulae were osteotomized in standardized fashion to produce a Weber type B Distal Fibula fracture. The fragments were fixated with an interfragmentary lag screw and polyaxial locking plates, with one Fibula in each pair receiving a posterolateral anti-glide-plate, and the other a lateral neutralization-plate. In a biomechanical test, the bending and torsional stiffnesses of the constructs and the ranges of motion (ROM) were measured and subjected to a paired comparison. Results The laterally plated group had a higher median (interquartile range) bending stiffness (29.2 (19.7)N/mm) and a smaller range of motion (2.06 (1.99)mm) than the posterolaterally plated group (14.6 (20.6)N/mm, and 4.11 (3.28)mm, respectively); however, the results were not statistically significant ( p bending =0.314; p ROM =0.325). Similarly, the torsional stiffness did not differ significantly between the two groups (laterally plated: 426 (259)Nmm/°; posterolaterally plated: 248 (399)Nmm/°; p torsion =0.900). The range of motion measurements between the two groups under torsional loading were also statistically insignificant (laterally plated: 8.88 (6.30)mm; posterolaterally plated: 15.34 (12.64)mm; p ROM =0.900). Conclusion In biomechanical cadaver-model tests of Weber type B fracture fixation with polyaxial locking plates, laterally plated constructs and posterolaterally plated constructs performed without significantly difference. Therefore, other considerations, such as access morbidity, associated injuries, patient anatomy, or surgeon's preference, may guide the choice of plating pattern. Further clinical studies will be needed for the establishment of definitive recommendations. Clinical relevance : Information on the behavior of polyaxial locking plates is relevant to surgeons performing internal fixation of Distal Fibula fractures.

Sung Taek Jung - One of the best experts on this subject based on the ideXlab platform.