Stress Distribution at Hip Joint During Level Walking

Sakamoto, Kazuhiko; Hara, Yoshinobu; Shimazu, Akira; Hirohashi, Kenji

doi:10.1007/978-4-431-68237-0_2

Cited by 2 publications

(6 citation statements)

References 7 publications

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“…Single‐peak loading profiles have previously been reported using instrumented hip prostheses during level over‐ground walking, 9 stair climbing, 11 and from computational estimates of joint loading, 10 indicating that this finding is not unique to this study and perhaps more importantly, it is not a product of modeling assumptions. The peak instantaneous force and the total force were not significantly different between individuals with a single‐peak or double‐peak profile, indicating that the different loading profiles had no significant bearing on joint loading.…”

Section: Discussionmentioning

confidence: 54%

“…This provides credence to the strata presented by De Pieri et al 12 and can be used to identify patients who are more likely to show a flattening or absence of a valley between the peaks. Since earlier reports of single‐peak profiles, 9‐11 no study has corroborated this same finding in a larger cohort of patients with OA or following THA, until now. A likely explanation for this is the higher functioning patients from other studies, where typically the participants consist of unilateral, single joint arthritis 6,12 .…”

Section: Discussionmentioning

confidence: 92%

“…This is particularly relevant given the normal double‐peak profile is not always seen in patients with hip OA or following THA. Single‐peak profiles have been reported using instrumented hip prostheses during level walking 9,10 and stair climbing 11 indicating that this pattern is physiologically possible, rather than errors due to modeling assumptions. However, the small sample size in these studies (n < 6) have limited the authors to report the observation of single‐peak profiles alone without exploring possible reasons to explain the atypical profiles 10,12 …”

Section: Introductionmentioning

confidence: 99%

“…However, the small sample size in these studies (n < 6) have limited the authors to report the observation of single-peak profiles alone without exploring possible reasons to explain the atypical profiles. 10,12 Musculoskeletal models are valuable for estimating internal joint loads that are difficult to measure in vivo, though the level of model complexity required to achieve reliable estimates of joint loading have remained contentious. 7,13 Typically, the bone dimensions of a generic musculoskeletal model are linearly scaled to conform to those of the patient using reflective markers placed on a participants' skin during motion capture experiments.…”

mentioning

confidence: 99%

“…15,16 Using a musculoskeletal model with personalized CT-derived HJC locations, this study aimed to identify individuals who display atypical loading patterns following THA, similar in characteristic to the single-peak observations previously reported using instrumented hip prostheses. [9][10][11] Second, we aimed to identify if the magnitude of hip joint forces differed between single-and doublepeak observations. Third, we aimed to identify if commonly reported spatiotemporal and kinematic gait variables were associated with atypical single-peak loading profiles.…”

mentioning

confidence: 99%

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Lower functioning patients demonstrate atypical hip joint loading before and following total hip arthroplasty for osteoarthritis

Bahl

Arnold

Taylor

et al. 2020

Journal Orthopaedic Research

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Previous studies have established that up to 1 year post total hip arthroplasty (THA), patients do not recover normal function and the magnitude of hip joint loading remains reduced compared to healthy individuals. However, the temporal nature of the loading profile has not been considered to identify individuals who are at a greater risk of poor functional outcomes following THA. This study aimed to determine changes to the profile and magnitude of the resultant hip joint reaction force before and up to 6 months post‐primary THA, and factors associated with atypical loading profiles. Hip joint loading was computed using a personalized lower‐limb musculoskeletal model in 43 participants awaiting primary THA for osteoarthritis (mean age: SD = 65, 14 years; body mass index: SD = 30, 5 kg/m2) before and up to 6 months after THA. Atypical, single‐peak loading profiles were observed for 11 patients before surgery, where four showed a single peak at 6 months. Patients displaying a single‐peak profile walked slower (mean difference: −0.4 m/s) compared to individuals displaying double‐peak profile (P = <.001) and had significantly reduced sagittal plane hip range of motion during gait (mean difference −9.6°, P = <.001). Self‐reported pain, function, and stiffness did not differentiate between patients with a single or double‐peak loading profile. Individuals with a single‐peak force profile did not meet the minimal clinically important hip range of motion during gait and would be classified as low‐functioning THA patients. Clinical Relevance: The temporal nature of the force profile may help to identify individuals who are at the greatest risk of poor functional outcomes after THA.

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Section: Discussionmentioning

confidence: 54%

Section: Discussionmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Lower functioning patients demonstrate atypical hip joint loading before and following total hip arthroplasty for osteoarthritis

Bahl

Arnold

Taylor

et al. 2020

Journal Orthopaedic Research

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Finite element analysis on femur subjected to knee joint forces during incline-decline walking

2022

IJATEE

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Walking is one of the activities that produces a significant magnitude to joint reaction forces and stresses of human bone. Walking on different ground surfaces contribute to the different loads and stresses particularly on femur bone. Other than uneven surfaces, walking on certain slope surfaces could also affect the magnitude of joint forces. Therefore, finite element analysis (FEA) was employed in this study to simulate the effect of walking on different slope angles for both incline-decline towards stress and strain responses of femur bone. A three dimensional (3D) geometrical model of femur was developed and converted to 3D finite element model. The loading conditions and constraints that reflect to walking on different sloped surfaces were applied on femoral head and patellar surface. Failure risk, stress-strain distribution and maximum stress-strain on femur were obtained from the simulation. The results show that the increase of sloped angles contribute to the increase of von Mises stress and strain as well as maximum principal stress and strain. The study provides an additional insight on the risk of injury due to incline-decline walking for certain angle of slopes.

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Stress Distribution at Hip Joint During Level Walking

Cited by 2 publications

References 7 publications

Lower functioning patients demonstrate atypical hip joint loading before and following total hip arthroplasty for osteoarthritis

Lower functioning patients demonstrate atypical hip joint loading before and following total hip arthroplasty for osteoarthritis

Finite element analysis on femur subjected to knee joint forces during incline-decline walking

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