Tibiofemoral joint contact forces and knee kinematics during squatting

Smith, Samuel O.; Cockburn, Robert A.; Hemmerich, Andrea; Li, Rebecca M.; Wyss, Urs P.

doi:10.1016/j.gaitpost.2007.05.004

Cited by 58 publications

(55 citation statements)

References 18 publications

(38 reference statements)

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“…In case we would have considered heels-up squatting, which is probably more common in Western countries, the force generated by mainly the gastrocnemius muscle would have an increasing effect on the general knee load. Overall, the joint force trends as described in this study are comparable to other studies (Smith et al, 2008) and most likely thigh-calf contact has a similar effect during other deep squatting postures regardless the exact joint force magnitude.…”

Section: Discussionsupporting

confidence: 89%

“…The maximal compressive knee force computed for squatting in this study corresponds to values reported earlier which range between 2 and 7 Â BW (Dahlkvist et al, 1982;Escamilla et al, 1998;Komistek et al, 2005;Nagura et al, 2006). However, recent studies focusing only on heels-down squatting report lower values of 2 to 3 Â BW (Toutoungi et al, 2000;Thambyah, 2008;Smith et al, 2008). One major assumption we made in this study was heels-down squatting during which the ground reaction force was assumed to act through the ankle joint.…”

Section: Discussionsupporting

confidence: 77%

See 1 more Smart Citation

Thigh–calf contact: Does it affect the loading of the knee in the high-flexion range?

Zelle¹,

Barink²,

Malefijt³

et al. 2009

Journal of Biomechanics

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Section: Discussionsupporting

confidence: 89%

Section: Discussionsupporting

confidence: 77%

Thigh–calf contact: Does it affect the loading of the knee in the high-flexion range?

Zelle¹,

Barink²,

Malefijt³

et al. 2009

Journal of Biomechanics

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“…Previous studies reporting TF force (Nagura et al 2006;Smith et al 2008) have obtained a range from 3.73 to 6.2 BW. Bergmann group (Kutzner et al 2010) has reported in vivo measurements in the range 2 -3.5 BW, depending on the analysed movement.…”

Section: Computer Methods In Biomechanics and Biomedical Engineeringmentioning

confidence: 99%

A dynamic multibody model of the physiological knee to predict internal loads during movement in gravitational field

Bersini

Sansone

Frigo

2015

Computer Methods in Biomechanics and Biomedical Engineering

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Obtaining tibio-femoral (TF) contact forces, ligament deformations and loads during daily life motor tasks would be useful to better understand the aetiopathogenesis of knee joint diseases or the effects of ligament reconstruction and knee arthroplasty. However, methods to obtain this information are either too simplified or too computationally demanding to be used for clinical application. A multibody dynamic model of the lower limb reproducing knee joint contact surfaces and ligaments was developed on the basis of magnetic resonance imaging. Several clinically relevant conditions were simulated, including resistance to hyperextension, varus-valgus stability, anterior -posterior drawer, loaded squat movement. Quadriceps force, ligament deformations and loads, and TF contact forces were computed. During anterior drawer test the anterior cruciate ligament (ACL) was maximally loaded when the knee was extended (392 N) while the posterior cruciate ligament (PCL) was much more stressed during posterior drawer when the knee was flexed (319 N). The simulated loaded squat revealed that the anterior fibres of ACL become inactive after 608 of flexion in conjunction with PCL anterior bundle activation, while most components of the collateral ligaments exhibit limited length changes. Maximum quadriceps and TF forces achieved 3.2 and 4.2 body weight, respectively. The possibility to easily manage model parameters and the low computational cost of each simulation represent key points of the present project. The obtained results are consistent with in vivo measurements, suggesting that the model can be used to simulate complex and clinically relevant exercises.

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“…Past studies have found movements with large knee flexion angles, such as squatting and kneeling, generate a large knee extension moment and knee joint force 17) . In the present study, knee extension moments M1 and M2 were greater for movements with a large knee flexion angle, showing similar results to our previous study 10) .…”

Section: Discussionmentioning

confidence: 98%

Study on the Effects of Different Stair-Descending Methods on Knee Angle, Joint Moment and Joint Force

2010

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Abstract. [Purpose] In general, people with bilateral osteoarthritis descend stairs sideways or backwards as compensatory movements. However, to the best of our knowledge, no studies have investigated these movements. The objective of the present study was to ascertain the effects of descending forwards and descending backwards on kinetic changes in the knee joint, to ascertain the optimal stair descending method for minimizing stress on the knee joint.[Subjects] Subjects were 30 adult women with no orthopedic or neurological disorders.[Methods] With step heights (riser heights) of 10, 15, 20 and 25 cm, changes in knee flexion angle, extension moment and joint force were measured when descending forwards and descending backwards using a three dimensional motion analysis system. [Results] Peak knee flexion angle, peak knee extension moment and peak knee joint forces observed in descending stairs backwards were smaller than those in the descending forwards action.[Conclusion] The present results suggest that descending stairs backwards for osteoarthritis patients is effective in protecting the knees, alleviating pain and acquiring compensatory movements.

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Tibiofemoral joint contact forces and knee kinematics during squatting

Cited by 58 publications

References 18 publications

Thigh–calf contact: Does it affect the loading of the knee in the high-flexion range?

Thigh–calf contact: Does it affect the loading of the knee in the high-flexion range?

A dynamic multibody model of the physiological knee to predict internal loads during movement in gravitational field

Study on the Effects of Different Stair-Descending Methods on Knee Angle, Joint Moment and Joint Force

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