TY - JOUR
T1 - Bone remodelling around the tibia due to total ankle replacement
T2 - effects of implant material and implant–bone interfacial conditions
AU - Mondal, Subrata
AU - Ghosh, Rajesh
PY - 2019/9/9
Y1 - 2019/9/9
N2 - One of the major causes of implant loosening is due to excessive bone resorption surroundingthe implant due to bone remodelling. The objective of the study is to investigate the effects ofimplant material and implant–bone interface conditions on bone remodelling around tibia bonedue to total ankle replacement. Finite element models of intact and implanted ankles weredeveloped using CT scan data sets. Bone remodelling algorithm was used in combination withFE analysis to predict the bone density changes around the ankle joint. Dorsiflexion, neutral,and plantar flexion positions were considered, along with muscle force and ligaments.Implant–bone interfacial conditions were assumed as debonded and bonded to represent non-osseointegration and fully osseointegration at the porous coated surface of the implant. Toinvestigate the effect of implant material, three finite element models having different materialcombinations of the implant were developed. For model 1, tibial and talar components weremade of Co–Cr–Mo, and meniscal bearing was made of UHMWPE. For model 2, tibial and talarcomponents were made of ceramic and meniscal bearing was made of UHMWPE. For model 3,tibial and talar components were made of ceramic and meniscal bearing was made of CFR-PEEK. Changes in implant material showed no significant changes in bone density due to boneremodelling. Therefore, ceramic appears to be a viable alternative to metal and CFR-PEEK canbe used in place of UHMWPE. This study also indicates that proper bonding between implantand bone is essential for long-term survival of the prosthetic components.
AB - One of the major causes of implant loosening is due to excessive bone resorption surroundingthe implant due to bone remodelling. The objective of the study is to investigate the effects ofimplant material and implant–bone interface conditions on bone remodelling around tibia bonedue to total ankle replacement. Finite element models of intact and implanted ankles weredeveloped using CT scan data sets. Bone remodelling algorithm was used in combination withFE analysis to predict the bone density changes around the ankle joint. Dorsiflexion, neutral,and plantar flexion positions were considered, along with muscle force and ligaments.Implant–bone interfacial conditions were assumed as debonded and bonded to represent non-osseointegration and fully osseointegration at the porous coated surface of the implant. Toinvestigate the effect of implant material, three finite element models having different materialcombinations of the implant were developed. For model 1, tibial and talar components weremade of Co–Cr–Mo, and meniscal bearing was made of UHMWPE. For model 2, tibial and talarcomponents were made of ceramic and meniscal bearing was made of UHMWPE. For model 3,tibial and talar components were made of ceramic and meniscal bearing was made of CFR-PEEK. Changes in implant material showed no significant changes in bone density due to boneremodelling. Therefore, ceramic appears to be a viable alternative to metal and CFR-PEEK canbe used in place of UHMWPE. This study also indicates that proper bonding between implantand bone is essential for long-term survival of the prosthetic components.
KW - Ankle joint
KW - tibia
KW - total ankle replacement
KW - finite element method
KW - bone remodelling
KW - interface failure
UR - https://www.tandfonline.com/doi/full/10.1080/10255842.2019.1661385
U2 - 10.1080/10255842.2019.1661385
DO - 10.1080/10255842.2019.1661385
M3 - Article
SN - 1476-8259
VL - 22
SP - 1247
EP - 1257
JO - COMPUTER METHODS IN BIOMECHANICS AND BIOMEDICAL ENGINEERING
JF - COMPUTER METHODS IN BIOMECHANICS AND BIOMEDICAL ENGINEERING
IS - 16
ER -