Kinematics of the Pelvis, Torso, and Lower Limb During Obstacle Negotiation While Under Temporal Constraints

Christensen, Jesse C.; Wilson, Christopher R.; Foreman, K. Bo

doi:10.1002/ar.23554

Cited by 6 publications

(2 citation statements)

References 26 publications

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“…Another possibility is that it is not a conscious strategy but simply a result of biomechanical constraints (e.g. reduced hip range of motion) [25][26][27][28].…”

Section: Discussionmentioning

confidence: 99%

Do older women with a fall history cross obstacles differently than older women with no fall history?

Guadagnin

Rocha

Bobbert³

et al. 2020

Hum Mov.

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Purpose. Many falls in older people occur after tripping or slipping, mainly due to unsuccessful vertical clearances or horizontal distances. A first fall may be explained by several factors related to aging and can be a trigger to subsequent falls. It is unclear if a history of fall changes the kinematics of obstacle crossing, increasing the risk of trips. Here, we determined whether older women reporting a fall history showed different spatial-temporal kinematic parameters during obstacle crossing than non-fallers. In addition, we investigated the presence of asymmetries between the preferred and non-preferred lower limb during obstacle crossing in fallers and non-fallers. Methods. This cross-sectional study recruited older women with a history of fall (n = 10) and without falls (n = 10). They had their kinematic parameters evaluated when walking at self-selected speed along an 8-m walkway, crossing an obstacle positioned in the middle of the walkway, with both preferred and non-preferred limb as the lead limb. The groups were compared, and effects of lower limb preference were also determined in both groups. Results. No main effects of group were observed regarding the kinematic variables. An effect of leg preference was found for post-obstacle horizontal distance, which was greater for the preferred limb in both groups. Conclusions. In conclusion, the kinematics of gait with obstacle crossing does not differentiate between older women with or without a history of recent fall.

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“…Another possibility is that it is not a conscious strategy but simply a result of biomechanical constraints (e.g. reduced hip range of motion) [25][26][27][28].…”

Section: Discussionmentioning

confidence: 99%

Do older women with a fall history cross obstacles differently than older women with no fall history?

Guadagnin

Rocha

Bobbert³

et al. 2020

Hum Mov.

View full text Add to dashboard Cite

show abstract

“…The final four papers of the issue examine the role of the pelvis during bipedal walking in humans. Jesse Christensen, a physical therapist at the University of Utah, and colleagues (Christensen et al, , this issue) used gait analysis to characterize pelvic motion during obstacle avoidance in a mobile group of individuals ( n = 10). These findings—that posterior pelvic tilt and ipsilateral pelvic hike are critically important for normal obstacle negotiation—will be an important baseline for clinicians working with populations prone to falling.…”

mentioning

confidence: 99%

Anatomy, Development, and Function of the Human Pelvis

DeSilva

Rosenberg

2017

The Anatomical Record

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The pelvis is an anatomically complex and functionally informative bone that contributes directly to both human locomotion and obstetrics. Because of the pelvis' important role in obstetrics, it is one of the most sexually dimorphic bony elements of the human body. The complex intersection of pelvic dimorphism, locomotion, and obstetrics has been reenergized by exciting new research, and many papers in this special issue of the pelvis help provide clarity on the relationship between pelvic form (especially female) and locomotor function. Compared to the pelvis of our ape relatives, the human pelvis is uniquely shaped; it is superoinferiorly short and stout, and mediolaterally wide-critical adaptations for bipedalism that are already present in some form very early in the history of the hominin lineage. In this issue, 13 original research papers address the anatomy, development, variation, and function of the modern human pelvis, with implications for understanding the selection pressures that shaped and continue to shape this bone. This rich collection of scholarship moves our understanding of the pelvis forward, while raising dozens of new questions that we hope will serve as inspiration for colleagues and students (both current and future) puzzled by this fascinatingly complex bone. Anat Rec, 300:628-632,

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Online visual cues can compensate for deficits in cutaneous feedback from the dorsal ankle joint for the trailing limb but not the leading limb during obstacle crossing

2018

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Precise control of the ankle is required to safely clear the ground during walking. Skin input contributes to proprioception about the ankle joint, during both passive movements and level walking. How skin might contribute to proprioceptive control of the ankle during a more complex functional task such as obstacle avoidance is unknown. The purpose of this study was to investigate skin contribution from the dorsum of the ankle joint to safely cross an obstacle, and examine the interaction between vision and skin. It was hypothesized that the lead and trail limbs would be influenced primarily by visual information and skin cues, respectively. Eleven healthy adults crossed an obstacle with either (1) intact sensory input (control) (2) reduced skin input using a topical anesthetic (anesthesia), (3) reduced visual input of the lower half of the visual field (partial vision) or (4) simultaneous reduction of skin and vision (paired). Kinematic measures of phase-dependent changes during these conditions were examined while subjects crossed the obstacle with their anesthetised foot as either the leading or trailing limb. Interestingly, lead limb toe trajectory was significantly affected both by deficits in visual and skin input, although the joint angle strategies differed across these sensory conditions. Subjects increased lead hip flexion with partial vision but increased hip roll with skin anesthesia relative to control. In contrast, trail limb toe trajectory was affected only by visual sensory loss. Overall visual feedback and skin input from the ankle dorsum differentially affect lead and trail limb kinematics to successfully cross an obstacle. Interestingly, it appears vision is not entirely able to compensate for reduced skin input during obstacle crossing.

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Kinematics of the Pelvis, Torso, and Lower Limb During Obstacle Negotiation While Under Temporal Constraints

Cited by 6 publications

References 26 publications

Do older women with a fall history cross obstacles differently than older women with no fall history?

Do older women with a fall history cross obstacles differently than older women with no fall history?

Anatomy, Development, and Function of the Human Pelvis

Online visual cues can compensate for deficits in cutaneous feedback from the dorsal ankle joint for the trailing limb but not the leading limb during obstacle crossing

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