TY - JOUR
T1 - Waterjet drilling in porcine bone
T2 - The effect of the nozzle diameter and bone architecture on the hole dimensions
AU - den Dunnen, Steven
AU - Mulder, Lars
AU - Kerkhoffs, Gino M.M.J.
AU - Dankelman, Jenny
AU - Tuijthof, Gabrielle J.M.
N1 - Funding Information:
This research is supported by the Marti-Keuning Eckhart Stichting and the Dutch Technology Foundation STW (Grant number 10851 ), which is part of the Netherlands Organisation for Scientific Research (NWO), and which is partly funded by Ministry of Economic Affairs . The sponsor had no involvement in the study design, analysis or interpretation of the data. We are grateful to Myrth Kwast and Chris Wierikx for their help in preparing and performing the experiment. We would like to thank Dr. ir. B. van Rietbergen from the Eindhoven University of Technology and Drs. I.N. Sierevelt from the Academic Medical Center for their help in the experiment design and statistical analyses.
PY - 2013/11
Y1 - 2013/11
N2 - Using waterjets instead of rigid drill bits for bone drilling can be beneficial due to the absence of thermal damage and a consequent sharp cut. Additionally, waterjet technology allows the development of flexible instruments that facilitate maneuvering through complex joint spaces. Controlling the drilling depth is of utmost importance to ensure clinical safety, but is challenging given the local variations in structural properties of the bone. The goal of this study was to deduce a descriptive mathematical equation able to predict the hole depth and diameter based on the local structural properties of the bone at given waterjet diameters.210 holes were drilled in porcine femora and tali with waterjet diameters (Dnozzle) of 0.3, 0.4, 0.5 and 0.6mm at a pressure of 700bar and a 5s jet time. Hole depths (Lhole), diameters (Dhole) and bone architectural properties were determined using microCT scans. The most important bone architectural property is the bone volume fraction (BV/TV), resulting in the significant predictive equations: Lhole=34.3 * Dnozzle2-17.6 * BV/TV+10.7 (R2=0.90, p<0.001), and hole Dhole=3.1* Dnozzle-0.45*BV/TV+0.54 (R2=0.58, p=0.02), with Lhole, Dhole and Dnozzle in mm.Drilling to a specific depth in bone tissue with a known BV/TV is possible, thereby contributing to the safe application of waterjet technology in orthopedic surgery.
AB - Using waterjets instead of rigid drill bits for bone drilling can be beneficial due to the absence of thermal damage and a consequent sharp cut. Additionally, waterjet technology allows the development of flexible instruments that facilitate maneuvering through complex joint spaces. Controlling the drilling depth is of utmost importance to ensure clinical safety, but is challenging given the local variations in structural properties of the bone. The goal of this study was to deduce a descriptive mathematical equation able to predict the hole depth and diameter based on the local structural properties of the bone at given waterjet diameters.210 holes were drilled in porcine femora and tali with waterjet diameters (Dnozzle) of 0.3, 0.4, 0.5 and 0.6mm at a pressure of 700bar and a 5s jet time. Hole depths (Lhole), diameters (Dhole) and bone architectural properties were determined using microCT scans. The most important bone architectural property is the bone volume fraction (BV/TV), resulting in the significant predictive equations: Lhole=34.3 * Dnozzle2-17.6 * BV/TV+10.7 (R2=0.90, p<0.001), and hole Dhole=3.1* Dnozzle-0.45*BV/TV+0.54 (R2=0.58, p=0.02), with Lhole, Dhole and Dnozzle in mm.Drilling to a specific depth in bone tissue with a known BV/TV is possible, thereby contributing to the safe application of waterjet technology in orthopedic surgery.
KW - Bone architecture
KW - Bone drilling
KW - Hole geometry
KW - Orthopedic surgery
KW - Waterjet diameter
KW - Waterjet drilling
KW - n/a OA procedure
UR - https://www.scopus.com/pages/publications/84884281440
U2 - 10.1016/j.jmbbm.2013.06.012
DO - 10.1016/j.jmbbm.2013.06.012
M3 - Article
C2 - 23910955
AN - SCOPUS:84884281440
SN - 1751-6161
VL - 27
SP - 84
EP - 93
JO - Journal of the mechanical behavior of biomedical materials
JF - Journal of the mechanical behavior of biomedical materials
ER -