Thermo-Mechanical Analysis of Sequential Bone Drilling with Applications to Osteoarthritis Treatment
Poster Number
02B
Format
Poster Presentation
Faculty Mentor Name
JuEun Lee
Faculty Mentor Department
Mechanical Engineering
Abstract/Artist Statement
Current research has highlighted the thermal damages associated with surgical bone drilling. Such dangers include bone death, which can limit repair of tissues in the direct vicinity of the bored hole. This research project’s purpose was to investigate the benefits of various spindle speeds, feed rates, and drill-bit diameters to find favorable conditions that minimize temperature elevation in bone. In this experiment, bovine tibia was drilled, which has strikingly similar mechanical properties to human bone. Furthermore, these drilling tests were performed in cancellous bone, a lesser known bone tissue that is found in long bones, such as the tibia and femur. The drilling tests were performed on a computer numerically controlled (CNC) machine, and thrust force and surface temperature were simultaneously recorded as functions of time. The results of this experiment observe that smaller diameter drill bits result in lower temperature elevations on the surface of cancellous bone, and lower thrust forces overall. Moreover, lowering spindle speed also proves favorable. Lastly, faster feed rates did slightly lower force and surface temperature in this experiment. While the results provide evidence of lowering thermal damage to the bone region, additional testing on cancellous bone should be performed to improve upon current drilling techniques and to characterize the complex, undocumented behavior of this area. Few studies exist presently on cancellous bone, despite its direct vicinity to the bone surface in the knee and hip. With future studies, drilling procedures for the treatment of osteoarthritis, osteoporosis, and cartilage issues may prove more effective.
Location
DeRosa University Center Ballroom
Start Date
27-4-2018 12:30 PM
End Date
27-4-2018 2:30 PM
Thermo-Mechanical Analysis of Sequential Bone Drilling with Applications to Osteoarthritis Treatment
DeRosa University Center Ballroom
Current research has highlighted the thermal damages associated with surgical bone drilling. Such dangers include bone death, which can limit repair of tissues in the direct vicinity of the bored hole. This research project’s purpose was to investigate the benefits of various spindle speeds, feed rates, and drill-bit diameters to find favorable conditions that minimize temperature elevation in bone. In this experiment, bovine tibia was drilled, which has strikingly similar mechanical properties to human bone. Furthermore, these drilling tests were performed in cancellous bone, a lesser known bone tissue that is found in long bones, such as the tibia and femur. The drilling tests were performed on a computer numerically controlled (CNC) machine, and thrust force and surface temperature were simultaneously recorded as functions of time. The results of this experiment observe that smaller diameter drill bits result in lower temperature elevations on the surface of cancellous bone, and lower thrust forces overall. Moreover, lowering spindle speed also proves favorable. Lastly, faster feed rates did slightly lower force and surface temperature in this experiment. While the results provide evidence of lowering thermal damage to the bone region, additional testing on cancellous bone should be performed to improve upon current drilling techniques and to characterize the complex, undocumented behavior of this area. Few studies exist presently on cancellous bone, despite its direct vicinity to the bone surface in the knee and hip. With future studies, drilling procedures for the treatment of osteoarthritis, osteoporosis, and cartilage issues may prove more effective.