Multiple screws

We previously reported anterior release, posterior internal distraction, and subsequent spinal fusion (ARPI DF) for the correction of severe scoliosis with a satisfactory correction rate. However, surgical procedures were completed in 2–3 stages.

9p vianttinic2711 20-04-2021 9 1   Download

The design and application of assisted instrumentation for internal fixation of femoral neck fractures with multiple screws are still evolving. A novel guide based on a femoral neck section was designed to improve the accuracy of screw placement, and its efficacy was evaluated.

6p vitennessee2711 01-02-2021 11 2   Download

Femoral neck fractures are one of the problems in clinical treatment. The prognosis is uncertain. Currently, No internal fixation method is superior to other internal fixation methods in the treatment of femoral neck fractures. Therefore, the internal fixation system needs to be further explored.

9p vimariana2711 22-12-2020 6 1   Download

Power Screws 1. Introduction. 2. Types of Screw Threads used for Power Screws. 3. Multiple Threads. 4. Torque Required to Raise Load by Square Threaded Screws. 5. Torque Required to Lower Load by Square Threaded Screws. 6. Efficiency of Square Threaded Screws. 7. Maximum Efficiency of Square Threaded Screws. 8. Efficiency vs. Helix Angle. 9. Overhauling and Selflocking Screws. 10. Efficiency of Self Locking Screws. 11. Coefficient of Friction. 12. Acme or Trapezoidal Threads. 13. Stresses in Power Screws. 14. Design of Screw Jack. 15. Differential and Compound Screws. Introduction 17.

53p tieutaithan 15-11-2010 73 8   Download

CONTENTS CONTENTS 624 C H A P T E R n A Textbook of Machine Design 17 Power Screws 1. Introduction. 2. Types of Screw Threads used for Power Screws. 3. Multiple Threads. 4. Torque Required to Raise Load by Square Threaded Screws. 5. Torque Required to Lower Load by Square Threaded Screws. 6. Efficiency of Square Threaded Screws. 7. Maximum Efficiency of Square Threaded Screws. 8. Efficiency vs. Helix Angle. 9. Overhauling and Selflocking Screws. 10. Efficiency of Self Locking Screws. 11. Coefficient of Friction. 12. Acme or Trapezoidal Threads. 13. Stresses in Power Screws. 14.

53p hadalabo 29-09-2010 105 24   Download

The FL1000 two-door, wall mount boxes feature a unique design and many integrated features such as: • Multiple, configurable locking options that allow users and service providers separate access for security • Acceptance of strength member tie-off hardware • Acceptance of cable clamps at each corner Grounding screws, mounting screws, and dust caps are included with each panel. More accessories are available on page 33.

25p thuyvan 13-08-2009 123 15   Download