Foot structure is significantly associated to subtalar joint kinetics and mechanical energetics

Maharaj, Jayishni N.; Cresswell, Adrian Ben; Lichtwark, Glen A.

doi:10.1016/j.gaitpost.2017.07.108

Cited by 11 publications

(9 citation statements)

References 31 publications

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“…The marker set consisted of a four-marker cluster on the thigh and shank segments and anatomical markers placed over the right and left anterior-superior iliac spines; right and left posterior-superior iliac spines; medial and lateral femoral epicondyles; medial and lateral malleoli. For the feet, a multi-segment marker set was used to track the motion of the rear-, mid-and fore-foot segments using 8 anatomical marker locations previously detailed (Leardini et al, 2007;Maharaj et al, 2017b).…”

Section: Experimental Protocolmentioning

confidence: 99%

“…The STJ generally functions to maintain frontal plane stability as it absorbs energy during pronation following heel strike and generates power for STJ supination at push-off (Piazza, 2005), with the tibialis posterior (TP) muscle and tendon considered a key muscle in recycling energy across the stance phase (Maharaj et al, 2016). Numerous factors influence the dynamics of the STJ during walking, including the properties of the TP tendinous tissue (Maharaj et al, 2017a), footwear (Maharaj et al, 2018), foot structure (Maharaj et al, 2017b) and gait parameters (Maharaj et al, 2017b;. Deviations in step width may alter frontal plane mechanics and hence the function of its constituting structures such as the STJ.…”

Section: Introductionmentioning

confidence: 99%

“…Deviations in step width may alter frontal plane mechanics and hence the function of its constituting structures such as the STJ. We recently undertook an observational study which demonstrated a moderate linear relationship between step width and STJ moments, with wider step widths being associated with lower STJ moments (Maharaj et al, 2017b). Coupled with the finding that a narrow step width is linked to an increase in TP muscle activation (Maharaj et al, 2018), it is likely that step width may reduce the required TP muscle force generation and subsequent stresses and strains imposed on its tendon.…”

Section: Introductionmentioning

confidence: 99%

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Increasing step width reduces the requirements for subtalar joint moments and powers

Maharaj

Murry

Cresswell

et al. 2019

Journal of Biomechanics

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Section: Experimental Protocolmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Increasing step width reduces the requirements for subtalar joint moments and powers

Maharaj

Murry

Cresswell

et al. 2019

Journal of Biomechanics

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“…The deficits in gait and running after an Achilles tendon rupture are for sure due to both changes in muscle strength, ankle range of motion and endurance, but not much is known about what happens to foot posture and foot structure after this injury. It has been reported that different types of foot structure may have an impact on developing overuse injuries in the lower limb in some individuals (10)(11)(12)(13). The medial longitudinal arch in the foot has been described to be low, normal or high and depending on the height, it could cause malalignment such as pes cavus or pes planus (14).…”

Section: Introductionmentioning

confidence: 99%

The Injured Limb Presents Lower Values in Foot Structure Measurements 6 Years After an Achilles Tendon Rupture

Brorsson

Jónsdóttir

Nygren

et al. 2021

Muscle Ligaments and Tendons J

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Background. It is not known if foot structure may change after an Achilles tendon rupture and if a possible change may have an impact on lower limb function. The primary aim of the study was to explore the difference in foot structure between injured and healthy limb and between two treatment groups, at mean 6 years after an Achilles tendon rupture. A secondary aim was to explore if the differences in foot structure correlated with functional and clinical outcome. Methods. Ninety patients (15 women) with the mean (SD) age of 49 (9) years were evaluated. They had all been randomized to be treated with (n = 45) or without (n = 45) surgery. Foot structure was evaluated with Navicular Drop (Ndrop) and Drift (Ndrift), Longitudinal Arch Angle (LAA) and standing Dorsiflexion with knee straight and bent (DFstraight) and (DFbent). Calf muscle performance was evaluated with Single-leg standing heel-rise test and tendon length with ultrasound. For Patient-reported outcome measurements, Achilles tendon Total Rupture Score (ATRS) and Physical Activity Scale (PAS) were used. Both limbs were evaluated and the limb symmetry index (LSI (%) = injured/healthy × 100) was calculated. Results. In all patients, the injured limb demonstrated lower values (injured/healthy) in Ndrift (6.0/6.7 mm, p = 0.034), Ndrop (6.6/7.4 mm, p = 0.32) and DFbent (44/46°, p < 0.001). In the group treated with surgery, there was significant difference between limbs in DFbent (44/46°, p = 0.002). In the non-surgically treated group, the injured limb demonstrated significantly lower values in Ndrift (6.0/7.4 mm, p = 0.005), Ndrop (6.9/8.2 mm, p = 0.005) and DFbent (44/46°, p = 0.008). There was no difference between treatment groups in LSI-values.Conclusions. An Achilles tendon rupture seems to have an impact on foot structure long time after the injury. There is a need to clarify if the injury influences both feet and if there is a difference between treatment groups.

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“…On the other hand, an excessive weight-bearing response of hindfoot valgus may apply mechanical stimulation to posterior tendons and cause further microtrauma [7]. Previous studies have reported that an abnormal total weight-bearing response of the navicular and talus bones, such as increased mobility or changes in the ratios of vertical to medial displacement, are likely associated with injuries [8].…”

Section: Introductionmentioning

confidence: 99%

The Effects of a Medial Heel Wedge on the Weight-Bearing Response of Hindfoot Valgus and the Total Weight-Bearing Responses of the Navicular and Talus Bones

et al. 2021

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OBJECTIVES Medial heel wedges are commonly prescribed to manage the weight-bearing response of hindfoot valgus and the total weight-bearing responses of the navicular and talus bones. Previous studies have reported that a medial heel wedge is effective in the management of musculoskeletal injuries. However, it remains unclear the effect of a medial heel wedge on the weight-bearing responses of footarch bones in vivo. To clarify the effects of a medial heel wedge on the weight-bearing response of hindfoot valgus and the total weight-bearing responses of the navicular and talus bones is necessary to understand how best to treat musculoskeletal injuries clinically. The purpose of our study was to clarify the effects of a medial heel wedge on the weight-bearing response of hindfoot valgus and the total weight-bearing responses of the navicular and talus bones.METHODS Twenty-five healthy males were analyzed. We obtained MRI scanning of the right foot under non-loading (NL) and full weight-bearing (FW) conditions. Participants wore two insole types, a flat insole and a medial heel wedge. To evaluate the weight-bearing response in hindfoot valgus, the hindfoot alignment view (HAV) was measured. We also measured navicular and talus bone positions and calculated the total positional changes of the navicular and talus bones (ΔTPCN, ΔTPCT) from the vertical and medial displacements using the Pythagorean theorem.RESULTS Significant interactions were observed with the HAV. Under both NL and FW conditions, the HAV was smaller on the medial heel wedge than on the flat insole. In addition, the ΔTPCN was significantly smaller on the medial heel wedge than on the flat insole. However, no significant differences were observed for ΔTPCT.CONCLUSIONS Our results suggest that use of a medial heel wedge decreases hindfoot valgus values under both NL and FW conditions and stabilizes the total weight-bearing response of the navicular bone.

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Foot structure is significantly associated to subtalar joint kinetics and mechanical energetics

Abstract: Please cite this article as: Maharaj Jayishni N, Cresswell Andrew G, Lichtwark Glen A.Foot structure is significantly associated to subtalar joint kinetics and mechanical energetics.Gait and Posture http://dx

Cited by 11 publications

References 31 publications

Increasing step width reduces the requirements for subtalar joint moments and powers

Increasing step width reduces the requirements for subtalar joint moments and powers

The Injured Limb Presents Lower Values in Foot Structure Measurements 6 Years After an Achilles Tendon Rupture

The Effects of a Medial Heel Wedge on the Weight-Bearing Response of Hindfoot Valgus and the Total Weight-Bearing Responses of the Navicular and Talus Bones

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