Thesis (M.Orth.)--University of Hong Kong. / Includes bibliographical references (leaves 108-133, 174-177). Also available in print.

Thesis (doctoral)--Lund University, 1994. / Added t.p. with thesis statement inserted.

Thesis (Ph. D.)--University of Hong Kong, 2005. / Title proper from title frame. Also available in printed format.

No description available.

by Leung Kwok-sui. / Thesis (M.D.)--Chinese University of Hong Kong, 1991. / Bibliography: leaves 112-121. / ACKNOWLEDGEMENTS --- p.iii / ABSTRACT --- p.v / LIST OF FIGURES --- p.xi / LIST OF TABLES --- p.xvii / CHAPTER / Chapter I --- Introduction --- p.1 / Chapter II --- The Evolution of the Fixation Devices for Peritrochanteric Fractures --- p.13 / Chapter II.1 --- Patho-anatomy and Biomechanics of Peritrochanteric Fractures --- p.14 / Chapter II.2 --- A Review of the Implants Available for Peritrochanteric Fractures --- p.19 / Chapter III --- Methodology --- p.39 / Chapter III.1 --- Biomechanical Analysis of the Gamma Nail and the Dynamic Hip Screw --- p.40 / Chapter III. 1.1 --- The Testing Machine and Equipments --- p.40 / Chapter III. 1.2 --- The Design of the Testing Jig --- p.41 / Chapter III. 1.3 --- The Test of the Sliding Characteristics of the Gamma Lag Screw --- p.43 / Chapter III. 1.4 --- The Biomechanical Behaviour of Gamma Nail Fixation and the Dynamic Hip Screw Fixation in Cadaveric Femora --- p.47 / Chapter III.2 --- Randomized Prospective Trial of Gamma Nail and Dynamic Hip Screw in the Treatment of Peritrochanteric Fractures Among Geriatric Patients --- p.51 / Chapter III.3 --- Anthropometric Study of Chinese Femora with Respect to the Design of the Gamma Nail and the Application of the Anthropometric Data for the Modification of the Gamma Nail --- p.55 / Chapter III.4 --- Method of Statistical Analysis --- p.61 / Chapter IV --- Results --- p.62 / Chapter IV. 1 --- The Biomechanical Analysis of the Gamma Nail and the Dynamic Hip Screws --- p.63 / Chapter IV. 1.1 --- The Sliding Characteristics of Gamma Lag Screw --- p.63 / Chapter IV. 1.2 --- The Biomechanical Behaviours of Gamma Nail and the Dynamic Hip Screw --- p.65 / Chapter IV.2 --- Clinical Studies --- p.70 / Chapter IV.2.1 --- Randomised Prospective Trial of Gamma Nail and Dynamic Hip Screw in the Treatment of Peritrochanteric Fractures --- p.70 / Chapter IV.2.2 --- Comparisons between the Clinical Use of Standard and Modified Gamma Nails --- p.75 / Chapter IV.3 --- The Anthropometric Study of the Proximal Chinese Femora and the Application of Anthropometric Data on the Modification of Gamma Nails --- p.78 / Chapter V --- Discussion --- p.85 / Chapter VI --- Conclusion --- p.109 / REFERENCES --- p.112 / APPENDICES --- p.122 / Chapter Appendix 1 --- Data Record Sheet of Retrospective Analysis of Geriatric Fractures Treated in the Prince of Wales Hospital --- p.123 / Chapter Appendix 2 --- Calibration Curve of the Linear Variable Differential Transformer (LVDT) --- p.125 / Chapter Appendix 3 --- Data Record Sheets for the Randomized Prospective Trial of Gamma Nail and Dynamic Hip Screw --- p.126 / Chapter Appendix 4 --- Operative Procedure of Dynamic Hip Screw and Gamma Nail - A Summary and Modifications --- p.132 / Chapter Appendix 5 --- Methodology for the Measurement of the Sliding of the Lag Screw of Gamma Nail on Serial X-ray Films --- p.138 / Chapter Appendix 6 --- Results of X-ray Measurement and Bone Densitometry Measurement of Cadaveric Femora --- p.142 / Chapter Appendix 7 --- Extra Data from the Results of the Randomized Prospective Trial of Gamma Nail and Dynamic Hip Screw --- p.144 / Chapter Appendix 8 --- Results of Anthropometric Study of 30 Chinese Femora --- p.145

published_or_final_version / Dentistry / Master / Master of Dental Surgery

No description available.

Thesis (M.D.S.)--University of Hong Kong, 1995. / Includes bibliographical references (leaves 53-74) Also available in print.

Thesis (Ph.D.)--University of Delaware, 2007. / Principal faculty advisor: Robert Gilbert, Dept. of Mathematical Sciences. Includes bibliographical references.

Cancellous, or spongy, bone accounts for nearly 80% of the human skeleton’s internal surface area, despite comprising only 20% of its mass. It is made up of a network of struts and plates that provide lightweight internal support to mammalian bones. In addition, it often serves as the main interface between the skeletal system and implanted devices such as artificial hips, knees, and fracture fixation devices. However, hip arthroplasties can succumb to loosening of the implant due to bone resorption, which is thought to be caused by a mismatch in both apparent and real stiffness between the device and the surrounding bone. Many studies have attempted to determine the Young’s modulus of cancellous bone tissue, but the results are far from being in agreement. Reported values range from less than 1 to nearly 20 GPa. In addition, the small size of trabeculae has made dissection and testing a challenge. In this thesis, whole individual trabeculae from a bovine lumbar spine were tested in three-point bending to determine their Young’s modulus using custom-made equipment to fit a miniature single-axis testing device. The device itself was validated by testing materials with moduli ranging from 1 to 200 GPa. The structure of the cancellous bone and the morphology of the individual struts were determined using micro x-ray computed tomography (µXCT). Individual struts were manually isolated from slices made using a low-speed saw under constant lubrication and measured under a stereomicroscope. Samples exhibiting no machined surfaces (and thus deemed to be whole, or “uncut”) were compared to struts that had been cut by the saw during sectioning. Validation showed that the system was capable of determining the modulus of materials that were approximately five times stiffer than the expected cancellous modulus (copper, at 115 GPa) to within 10% of published values. This gave confidence in the results for bone. The modulus of the “uncut” specimens was found to be 15.28 ± 2.26 GPa, while the “cut” specimens had a significantly lower modulus (p = 1.665 × 10-6) at 2.63 ± 2.65 GPa. The lower modulus for “uncut” specimens may be due to microdamage that occurred during machining and dissection. / Thesis (Master, Mechanical and Materials Engineering) -- Queen's University, 2010-08-26 00:03:49.732