Knee Kinematics of High-Flexion Activities of Daily Living Performed by Male Muslims in the Middle East

Acker, Stacey M.; Cockburn, Robert A.; Krevolin, Janet; Li, Rebecca M.; Tarabichi, Samih; Wyss, Urs P.

doi:10.1016/j.arth.2010.08.003

Cited by 49 publications

(30 citation statements)

References 10 publications

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“…While many studies have reported data to support the medial-pivoting feature of the knee motion (Hill et al, 2000; Jensen, 2005; Johal et al, 2005; Tanifuji et al, 2011), there are studies that reported knee flexion in a lateral-pivoting pattern during gait (Hoshino and Tashman, 2012; Koo and Andriacchi, 2008; Kozanek et al, 2009). Recently, several studies also have reported various motion patterns of the knee, implying that the motion characters are activity (or loading) dependent (Acker et al, 2011; Amin et al, 2008; Hoshino and Tashman, 2012; Johal et al, 2005; Palmer, 2012). …”

Section: Introductionmentioning

confidence: 99%

In vivo kinematics of the knee during weight bearing high flexion

Hosseini

Tsai

et al. 2013

Journal of Biomechanics

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Achieving high flexion is an objective of contemporary total knee arthoplasty, however little is known on the knee biomechanics at high flexion under weight-bearing conditions. This study is to investigate the 6DOF kinematics and tibiofemoral cartilage contact biomechanics of the knee during weight-bearing flexion from full extension to maximal flexion. Eight knees from seven healthy subjects with no history of injuries or chronic pain were recruited. The knees were MRI scanned to create 3D models of the tibia and femur, including their articular cartilage surfaces. The subjects were then imaged using a dual fluoroscopic image system while performing a weight-bearing quasi-static single-legged lunge from full extension to maximal flexion. The 6DOF kinematics and the articular cartilage contact locations were measured along the flexion path of the knee. The result indicated that the internal tibial rotation increased sharply at low flexion angles (full extension to 30°), maintained a small variation in the middle range of flexion (30° to 120°), and then sharply increased again at high flexion angles (120° to maximal flexion). The contact point moved similarly in the medial and lateral compartments before 120° of flexion, but less on the medial compartment at high flexion angles. The results indicated that the knee motion couldn’t be described using one character in the entire range of flexion, especially in high flexion. The knee kinematic data in the entire range of flexion of the knee could be instrumental for designing new knee prostheses to achieve physical high flexion and improving rehabilitation protocols after knee injuries.

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Section: Introductionmentioning

confidence: 99%

In vivo kinematics of the knee during weight bearing high flexion

Hosseini

Tsai

et al. 2013

Journal of Biomechanics

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“…Moreover, such motions might be seen all over the world as taking a bath, putting socks on and off, gardening or resting with flexing a knee deeply. Responding to the needs for the new prosthesis, the research about the kinematics of deep knee flexion has been activated recently (Hemmerich et al, 2006;Hanson et al, 2007;Thambyah, 2008;Acker et al, 2011;Hofer et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Estimation of thigh-calf contact force during deep knee flexion, using both anthropometric and motion measurements

Fukunaga

Ayaka

Ito

et al. 2016

JBSE

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The objective of this study was to develop a method to estimate thigh-calf contact force during heel-rise squatting posture, which is important for analyzing the kinetics of the lower limb during deep knee flexion; however, the measured forces varied widely among test subjects. We also considered joint angles, rather than only individual anthropometric, such as height, body weight (BW), or body mass index (BMI). We created estimation equations by a linear combination of both physical and posture parameters, and then performed the measurement experiment with 10 healthy males. Test subjects were asked to take a squatting posture, and to bend their upper bodies forward and backward. We measured thigh-calf contact force by placing a pressure distribution sensor sheet between the thigh and calf. At the same time, the joint angles were measured as estimation parameters. Coefficients of the estimating equations were determined to minimize the root mean square error of the estimated and measured values. We compared four estimation equations, using physical and posture parameters, as well as those selected from all parameters, which are easily measurable. As a result, the estimation accuracy improved by using both physical and posture parameters. The average magnitude of the thigh-calf contact force was 0.92±0.24BW, and the average error of estimation was 0.06BW. The error was 0.11BW by using only physical parameters, and was 0.15BW by using only posture parameters. Despite this, even the estimation error using selected parameters was 0.07BW, while the maximum error was 0.25BW. We confirmed that there was little posture change adversely affecting thigh-calf contact force. Individual anthropometric parameters were important for estimation, although we used similar subjects for gender, age, and physical size. In the future, we will be recruiting more test subjects and discussing the effect of physical parameters, not only anthropometric values.

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“…High-flexion often refers to movements that require over 120° of knee flexion, which are particularly common in Asian cultures [3–6], squatting, sitting cross-legged, kneeling, and prayer. High-flexion (HF) knee prostheses have been developed for this purpose and have been proven to accommodate such movements.…”

Section: Introductionmentioning

confidence: 99%

“…However, whether such HF prostheses are clinically more effective than conventional knee replacements is debatable, with most studies showing either no significant improvement or mild improvements over conventional TKA [7–10]. Even for studies that do report significantly greater flexion with HF designs, bias in patient selection, experimental errors, or shortcomings in measurement methods may greatly influence the results [3–5]. Therefore, whether HF knee prostheses are practically useful to patients requires further research using clearly defined measurement and testing methods to make studies comparable.…”

Section: Introductionmentioning

confidence: 99%

Biomechanical Considerations in the Design of High-Flexion Total Knee Replacements

Cheng

McClean²,

Lai³

et al. 2014

The Scientific World Journal

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Typically, joint arthroplasty is performed to relieve pain and improve functionality in a diseased or damaged joint. Total knee arthroplasty (TKA) involves replacing the entire knee joint, both femoral and tibial surfaces, with anatomically shaped artificial components in the hope of regaining normal joint function and permitting a full range of knee flexion. In spite of the design of the prosthesis itself, the degree of flexion attainable following TKA depends on a variety of factors, such as the joint's preoperative condition/flexion, muscle strength, and surgical technique. High-flexion knee prostheses have been developed to accommodate movements that require greater flexion than typically achievable with conventional TKA; such high flexion is especially prevalent in Asian cultures. Recently, computational techniques have been widely used for evaluating the functionality of knee prostheses and for improving biomechanical performance. To offer a better understanding of the development and evaluation techniques currently available, this paper aims to review some of the latest trends in the simulation of high-flexion knee prostheses.

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Knee Kinematics of High-Flexion Activities of Daily Living Performed by Male Muslims in the Middle East

Cited by 49 publications

References 10 publications

In vivo kinematics of the knee during weight bearing high flexion

In vivo kinematics of the knee during weight bearing high flexion

Estimation of thigh-calf contact force during deep knee flexion, using both anthropometric and motion measurements

Biomechanical Considerations in the Design of High-Flexion Total Knee Replacements

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