The Experts below are selected from a list of 207 Experts worldwide ranked by ideXlab platform

Qingping Xie - One of the best experts on this subject based on the ideXlab platform.

Shunhong Gao - One of the best experts on this subject based on the ideXlab platform.

  • Pressing fixation of mallet Finger Fractures with the end of a K-wire (a new fixation technique for mallet Fractures).
    Injury, 2015
    Co-Authors: Wenlong Zhang, Xu Zhang, Gang Zhao, Shunhong Gao
    Abstract:

    Abstract Aim The aim of this study was to describe and evaluate a surgical technique for the treatment of mallet Finger Fractures using a K-wire stabilization of the distal interphalangeal (DIP) joint and another K-wire pressing the bone fragment. Methods Between June 2007 and March 2014, 41 patients (28 men, 13 women) with isolated closed mallet Finger Fracture were treated using two K-wires. In the cohort, the mean joint surface involvement was 44.3% (range: 28–62%). With a mean period of 23.6 months, patient follow-up lasted 13–34 months. The Fingers were evaluated for loss of extension and flexion of the (DIP) joints. The results were graded using Crawford's criteria. Results Union of all Fractures took place at an average of 5.5 weeks after the surgical procedure. Average extension lag was 4°, and active flexion 71°. According to the Crawford rating scale, 35 Fingers were excellent, four were good, one was fair, and one was poor. Conclusions Pressing fixation of the bone fragment with the end of a K-wire was a useful technique in the treatment of mallet Finger Fractures. Type of study/level of evidence Therapeutic IV.

Jorge Subirá - One of the best experts on this subject based on the ideXlab platform.

  • Research and development of a new RF-assisted device for bloodless rapid transection of the liver: computational modeling and in vivo experiments.
    Biomedical engineering online, 2009
    Co-Authors: Fernando Burdío, Enrique Berjano, Ana Navarro, Jose M. Burdio, Luis Grande, Ana González, Ignacio Cruz, Antonio Güemes, Ramón Sousa, Jorge Subirá
    Abstract:

    Background Efficient and safe transection of biological tissue in liver surgery is strongly dependent on the ability to address both parenchymal division and hemostasis simultaneously. In addition to the conventional clamp crushing or Finger Fracture methods other techniques based on radiofrequency (RF) currents have been extensively employed to reduce intraoperative blood loss. In this paper we present our broad research plan for a new RF-assisted device for bloodless, rapid resection of the liver.

  • Research and development of a new RF-assisted device for bloodless rapid transection of the liver: Computational modeling and in vivo experiments
    BioMedical Engineering OnLine, 2009
    Co-Authors: Fernando Burdío, Enrique Berjano, Ana Navarro, Jose M. Burdio, Luis Grande, Ana González, Ignacio Cruz, Antonio Güemes, Ramón Sousa, Jorge Subirá
    Abstract:

    Background Efficient and safe transection of biological tissue in liver surgery is strongly dependent on the ability to address both parenchymal division and hemostasis simultaneously. In addition to the conventional clamp crushing or Finger Fracture methods other techniques based on radiofrequency (RF) currents have been extensively employed to reduce intraoperative blood loss. In this paper we present our broad research plan for a new RF-assisted device for bloodless, rapid resection of the liver. Methods Our research plan includes computer modeling and in vivo studies. Computer modeling was based on the Finite Element Method (FEM) and allowed us to estimate the distribution of electrical power deposited in the tissue, along with assessing the effect of the characteristics of the device on the temperature profiles. Studies based on in vivo pig liver models provided a comparison of the performance of the new device with other techniques (saline-linked technology) currently employed in clinical practice. Finally, the plan includes a pilot clinical trial, in which both the new device and the accessory equipment are seen to comply with all safety requirements. Results The FEM results showed a high electrical gradient around the tip of the blade, responsible for the maximal increase of temperature at that point, where temperature reached 100°C in only 3.85 s. Other hot points with lower temperatures were located at the proximal edge of the device. Additional simulations with an electrically insulated blade produced more uniform and larger lesions (assessed as the 55°C isotherm) than the electrically conducting blade. The in vivo study, in turn, showed greater transection speed (3 ± 0 and 3 ± 1 cm^2/min for the new device in the open and laparoscopic approaches respectively) and also lower blood loss (70 ± 74 and 26 ± 34 mL) during transection of the liver, as compared to saline-linked technology (2 ± 1 cm^2/min with P = 0.002, and 527 ± 273 mL with P = 0.001). Conclusion A new RF-assisted device for bloodless, rapid liver resection was designed, built and tested. The results demonstrate the potential advantages of this device over others currently employed.

Ray Vanderby - One of the best experts on this subject based on the ideXlab platform.

  • Biomechanical analysis of mallet Finger Fracture fixation techniques. Commentary
    Journal of Hand Surgery (European Volume), 1993
    Co-Authors: Timothy A. Damron, William D. Engber, Richard H. Lange, Ron Mccabe, L. A. Damron, Mark J. Ulm, Ray Vanderby, L. H. Schneider
    Abstract:

    A biomechanical study was conducted to determine the best fixation technique for mallet Finger Fracture among four commonly used methods. Considerations were technical complications, biomechanical properties, and maintenance of reduction. Techniques tested included Kirschner wire, figure-of-eight wire, tension band wire, and tension band suture. Technical complications were frequent with both the Kirschner wire and tension band wire techniques. Biomechanical testing yielded significantly greater energy absorbed to failure and a trend toward greater peak loads to failure for both the figure-of-eight wire and tension band suture techniques

  • Biomechanical analysis of mallet Finger Fracture fixation techniques.
    The Journal of hand surgery, 1993
    Co-Authors: Timothy A. Damron, William D. Engber, Richard H. Lange, Ron Mccabe, L. A. Damron, Mark J. Ulm, Ray Vanderby
    Abstract:

    Abstract A biomechanical study was conducted to determine the best fixation technique for mallet Finger Fracture among four commonly used methods. Considerations were technical complications, biomechanical properties, and maintenance of reduction. Techniques tested included Kirschner wire, figure-of-eight wire, tension band wire, and tension band suture. Technical complications were frequent with both the Kirschner wire and tension band wire techniques. Biomechanical testing yielded significantly greater energy absorbed to failure and a trend toward greater peak loads to failure for both the figure-of-eight wire and tension band suture techniques. Irreversible loss of reduction during testing occurred in all of the Kirschner wire-fixed Fractures, in 60% of the tension band wire-fixed Fractures, and in 50% of the figure-of-eight wire-fixed Fractures. No irreversible failure occurred in the tension band suture group.

Qiang Chen - One of the best experts on this subject based on the ideXlab platform.