An optimized protocol for hip joint centre determination using the functional method

Camomilla, Valentina; Cereatti, Andrea; Vannozzi, Giuseppe; Cappozzo, Aurelio

doi:10.1016/j.jbiomech.2005.02.008

Cited by 232 publications

(199 citation statements)

References 32 publications

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“…The relative motions of the marker clusters from neighboring segments during specific reference motions (hip: ''star-arc'' 34 ; knee: flexion/extension; ankle: dorsi/plantar-flexion) were used to derive the position of joint centers 35 and joint axes 36 using an extension of a previously reported functional approach. 23 In addition, each marker was weighted to minimize the residual error of the functional joint estimation 37 and maintain the anatomical constraints of segment lengths.…”

Section: Determination Of Lower Limb Motionmentioning

confidence: 99%

Patellofemoral joint contact forces during activities with high knee flexion

Trepczynski

Kutzner

Kornaropoulos

et al. 2011

Journal Orthopaedic Research

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The patellofemoral (PF) joint plays an essential role in knee function, but little is known about the in vivo loading conditions at the joint. We hypothesized that the forces at the PF joint exceed the tibiofemoral (TF) forces during activities with high knee flexion. Motion analysis was performed in two patients with telemetric knee implants during walking, stair climbing, sit-to-stand, and squat. TF and PF forces were calculated using a musculoskeletal model, which was validated against the simultaneously measured in vivo TF forces, with mean errors of 10% and 21% for the two subjects. The in vivo peak TF forces of 2.9-3.4 bodyweight (BW) varied little across activities, while the peak PF forces showed significant variability, ranging from less than 1 BW during walking to more than 3 BW during high flexion activities, exceeding the TF forces. Together with previous in vivo measurements at the hip and knee, the PF forces determined here provide evidence that peak forces across these joints reach values of around 3 BW during high flexion activities, also suggesting that the in vivo loading conditions at the knee can only be fully understood if the forces at the TF and the PF joints are considered together. ß

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Section: Determination Of Lower Limb Motionmentioning

confidence: 99%

Patellofemoral joint contact forces during activities with high knee flexion

Trepczynski

Kutzner

Kornaropoulos

et al. 2011

Journal Orthopaedic Research

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“…In functional methods, however, the pelvic ACS does not impact on the reliability of the thigh ACS, whereas in predictive methods any errors in the definition of the pelvic ACS would propagate to the HJC, thigh ACS, and potentially reducing reliability of joint kinematics. It is currently recommended that functional calibration trials for the GSF method should be performed in a 'StarArc' movement pattern [14] with a RoM as large as possible [15,16]. The effect of number and placement of markers on the precision of the HJC estimation has been previously evaluated, although not with respect to the GSF method [17].…”

Section: Hjc Location Introductionmentioning

confidence: 99%

“…The effect of number and placement of markers on the precision of the HJC estimation has been previously evaluated, although not with respect to the GSF method [17]. The impact of the chosen functional method, movement pattern and number of markers on the accuracy of the HJC estimation has also been assessed [14,16,18,19]. To our knowledge no previous study has assessed the influence of the number of markers used on the reliability of HJC calculations.…”

Section: Hjc Location Introductionmentioning

confidence: 99%

Reliability of functional and predictive methods to estimate the hip joint centre in human motion analysis in healthy adults

Kainz

Modenese

et al. 2017

Gait & Posture

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“…Kirkwood et al [13] compared different predictive models and reported the method of Bell et al [2] places the hip center more lateral, which would underestimate varus alignment. The use of other methods, including a functional method [3], could improve the accuracy of the HKA angle, but additional investigations will have to determine the validity of other models. Siu et al [24] described the use of a standardized procedure to control foot and hip position results in better reproducible results.…”

Section: Discussionmentioning

confidence: 99%

Frontal Knee Alignment: Three-dimensional Marker Positions and Clinical Assessment

Vanwanseele

Parker

Coolican

2009

Clinical Orthopaedics &Amp; Related Research

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We assessed the validity of the hip-knee-ankle angle measured statically during three-dimensional (3-D) gait analysis and the tibial angle using an inclinometer compared with the mechanical axis on radiographs. Eleven individuals (20 knees) with radiographic knee osteoarthritis (OA) participated in this study. We determined the following: the lower-limb mechanical axis using weightbearing long-leg radiographs; hip-knee-ankle angle using the techniques of 3-D gait analysis in a static standing position; and tibial alignment using an inclinometer. The mean mechanical axis (± standard deviation) for this cohort was 0.7°± 7.2°(range, -13°-16°). The tibial alignment and hip-knee-ankle angle correlated with the mechanical axis but the correlation between the mechanical axis and the hip-knee-ankle angle was stronger. Our data suggest the inclinometer and 3-D gait analysis are valid ways to estimate mechanical alignment of the knee.

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An optimized protocol for hip joint centre determination using the functional method

Cited by 232 publications

References 32 publications

Patellofemoral joint contact forces during activities with high knee flexion

Patellofemoral joint contact forces during activities with high knee flexion

Reliability of functional and predictive methods to estimate the hip joint centre in human motion analysis in healthy adults

Frontal Knee Alignment: Three-dimensional Marker Positions and Clinical Assessment

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