FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2920119086> ?p ?o ?g. }

• W2920119086 abstract "Knee osteoarthritis (OA) is a common type of musculoskeletal disability, particularly among the elderly population. Excessive contact forces on the joint, or on specific parts of it (e.g. medial compartment), or shifting the contact forces to the regions that are not adapted to loading are the mechanical factors which can trigger OA. Therefore, it is crucial to understand the differences of these mechanical parameters in OA subjects with respect to the healthy ones. The aim of this study was to the compare the tibiofemoral contact point locations and the contact forces in OA and healthy subjects and examine if the contact point locations influence the contact force sharing in both groups.The tibiofemoral contact point locations in 10 healthy and 9 osteoarthritic (OA) subjects during a weight-bearing squat was measured using stand-alone biplane X-ray images. A manual multiple view 3D reconstruction/registration method was used to reconstruct the bones in different squat postures from the biplane radiographs and a weighted center of bone-to-bone proximity was applied to estimate the contact point locations. Results showed that the contact point locations of the OA subjects on the medial and lateral compartments were shifted medially compared to the healthy group. In both groups, contact points showed a posterior excursion on the medial compartment and posterior and lateral excursions on the lateral compartment, where the excursion on the lateral compartment was smaller in OA subjects.To estimate the tibiofemoral contact forces, a custom musculoskeletal model of the lower limb with the integration of personalized contact points was provided to estimate contact forces at subject-specific contact points during gait. The tibiofemoral joint model was reformulated so that the constraints of the joint were formed by the superimposition of the personalized tibial and femoral contact points. The suggested constraints are adaptable to the contact points derived from the classical joint models or those experimentally measured from the 3D imaging techniques. The estimated contact forces estimated using the personalized contact points were compared to those estimated from the classical knee joint models in 10 healthy subjects. Results showed that the impact of personalization of contact points on the contact forces is very variable among the subjects and the shifts of the contact points alone cannot predict the distribution of contact forces in the medial and lateral compartments.To evaluate the contribution of contact point locations to the contact force distribution the musculoskeletal model of the lower limb with the personalized contact point trajectories were used to estimate the medial and lateral contact forces of 10 healthy and 12 OA subjects. The contact forces in healthy subjects were slightly higher compared to the OA subjects. However, no statistically significant difference was noted in the peaks of medial, lateral or total contact forces. The regression analysis results showed that the knee adduction moment and knee flexion moment were the main contributors to the medial-to-total contact force ratio (MR) in both groups. From the components of the contact point location, the medial contact point location in medial/lateral direction had a significant contribution to the MR in OA subjects. This study showed that the mechanism of load distribution was different in OA joints where contrary to the healthy ones the contact point location was a significant contributor to MR. In addition, the knee flexion moment had a higher contribution to MR than the knee adduction moment whereas in healthy subjects the knee adduction moment was the most significant contributor to the MR." @default.
• W2920119086 created "2019-03-11" @default.
• W2920119086 creator A5015859388 @default.
• W2920119086 date "2018-06-27" @default.
• W2920119086 modified "2023-09-24" @default.
• W2920119086 title "Tibiofemoral contact areas and contact forces in healthy and osteoarthritic subjects" @default.
• W2920119086 cites W1202899116 @default.
• W2920119086 cites W1543651006 @default.
• W2920119086 cites W1558886965 @default.
• W2920119086 cites W1598234728 @default.
• W2920119086 cites W1731894860 @default.
• W2920119086 cites W1872032003 @default.
• W2920119086 cites W1963501825 @default.
• W2920119086 cites W1963918431 @default.
• W2920119086 cites W1964204436 @default.
• W2920119086 cites W1970407444 @default.
• W2920119086 cites W1972575299 @default.
• W2920119086 cites W1973937375 @default.
• W2920119086 cites W1976469795 @default.
• W2920119086 cites W1980912454 @default.
• W2920119086 cites W1982513459 @default.
• W2920119086 cites W1983624537 @default.
• W2920119086 cites W1984033828 @default.
• W2920119086 cites W1986512672 @default.
• W2920119086 cites W1986885059 @default.
• W2920119086 cites W1987988714 @default.
• W2920119086 cites W1991351924 @default.
• W2920119086 cites W1991406901 @default.
• W2920119086 cites W1991626252 @default.
• W2920119086 cites W1994185771 @default.
• W2920119086 cites W1994888218 @default.
• W2920119086 cites W1996090319 @default.
• W2920119086 cites W2003786620 @default.
• W2920119086 cites W2004875269 @default.
• W2920119086 cites W2005817228 @default.
• W2920119086 cites W2007094678 @default.
• W2920119086 cites W2010505273 @default.
• W2920119086 cites W2010711594 @default.
• W2920119086 cites W2011038175 @default.
• W2920119086 cites W2013056443 @default.
• W2920119086 cites W2014053597 @default.
• W2920119086 cites W2014950253 @default.
• W2920119086 cites W2017388083 @default.
• W2920119086 cites W2017481821 @default.
• W2920119086 cites W2020787308 @default.
• W2920119086 cites W2027404394 @default.
• W2920119086 cites W2028580836 @default.
• W2920119086 cites W2029057845 @default.
• W2920119086 cites W2031805060 @default.
• W2920119086 cites W2031820365 @default.
• W2920119086 cites W2033967593 @default.
• W2920119086 cites W2034406530 @default.
• W2920119086 cites W2034581899 @default.
• W2920119086 cites W2035472360 @default.
• W2920119086 cites W2036269831 @default.
• W2920119086 cites W2041571426 @default.
• W2920119086 cites W2044929399 @default.
• W2920119086 cites W2045607856 @default.
• W2920119086 cites W2046637991 @default.
• W2920119086 cites W2048360860 @default.
• W2920119086 cites W2049347569 @default.
• W2920119086 cites W2050707247 @default.
• W2920119086 cites W2052539597 @default.
• W2920119086 cites W2054632094 @default.
• W2920119086 cites W2060436321 @default.
• W2920119086 cites W2060777874 @default.
• W2920119086 cites W2063324672 @default.
• W2920119086 cites W2063815157 @default.
• W2920119086 cites W2064496123 @default.
• W2920119086 cites W2065585431 @default.
• W2920119086 cites W2066131368 @default.
• W2920119086 cites W2067373051 @default.
• W2920119086 cites W2069275527 @default.
• W2920119086 cites W2072619434 @default.
• W2920119086 cites W2077285668 @default.
• W2920119086 cites W2078124583 @default.
• W2920119086 cites W2078722969 @default.
• W2920119086 cites W2078936766 @default.
• W2920119086 cites W2079404623 @default.
• W2920119086 cites W2084045174 @default.
• W2920119086 cites W2085312487 @default.
• W2920119086 cites W2085552355 @default.
• W2920119086 cites W2087526920 @default.
• W2920119086 cites W2090623340 @default.
• W2920119086 cites W2095841090 @default.
• W2920119086 cites W2096939203 @default.
• W2920119086 cites W2097928871 @default.
• W2920119086 cites W2098013710 @default.
• W2920119086 cites W2100194686 @default.
• W2920119086 cites W2109045640 @default.
• W2920119086 cites W2114282899 @default.
• W2920119086 cites W2115455197 @default.
• W2920119086 cites W2120152816 @default.
• W2920119086 cites W2120362239 @default.
• W2920119086 cites W2122262939 @default.
• W2920119086 cites W2122650518 @default.
• W2920119086 cites W2123789634 @default.
• W2920119086 cites W2124702357 @default.
• W2920119086 cites W2127431160 @default.
• W2920119086 cites W2131633148 @default.

• next