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Kinetics of compensatory gait in persons with myelomeningocele
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- Gutierrez, Elena M, 1973- (author)
- Karolinska Institutet, Dept. of Surgical Sciences, Orthopedics Section
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- Bartonek, Åsa (author)
- Karolinska Institutet
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- Haglund-Åkerlind, Yvonne (author)
- Karolinska Institutet
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- Gutierrez, EA (author)
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- Karolinska Institutet Karolinska Institutet, Dept of Surgical Sciences, Orthopedics Section (creator_code:org_t)
- Elsevier BV, 2005
- 2005
- English.
- In: Gait & Posture. - : Elsevier BV. - 0966-6362 .- 1879-2219. ; 21:1, s. 12-23
- Journal article (peer-reviewed)
Abstract
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- This study investigated the kinetic strategy and compensatory mechanisms during self-ambulatory gait in children with lumbo-sacral myelomeningocele. Thirty-one children with mid-lumbar to low-sacral myelomeningocele who walked without aids and 21 control children were evaluated by three-dimensional gait analysis. Joint moments in all planes at the hip and knee and sagittal moments at the ankle, as well as joint power and work done at all three joints, were analyzed. Joint moment capacity lost due to plantarflexor and dorsiflexor weakness was provided instead by orthotic support, but other joints were loaded more to compensate for the weakness at the ankles and restricted ankle motion. Subjects with total plantarflexor and dorsiflexor paresis and strength in the hip abductors had more knee extensor loading due to plantarflexor weakness and dorsiflexion angle of the orthotic, ankle joint. The subjects with orthoses also generated more power at the hip to supplement the power generation lost to plantarflexor weakness and fixed ankles. The most determinant muscle whose paresis changes gait kinetics was the hip abductor. Hip abductor weakness resulted in a characteristic pattern where the hips displayed an eccentric adduction moment, mediating energy transfer into the lower limbs, and the hips replaced the knees as power absorbers in early stance. Joint moment, power and work analyses complement a kinematic analysis to provide a complete picture of how children who have muscle paresis recruit stronger muscle groups to compensate for weaker ones.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Ortopedi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Orthopaedics (hsv//eng)
Keyword
- motion analysis
- spina bifida
- joint moments
- biomechanics pathological gait
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- ref (subject category)
- art (subject category)
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- Royal Institute of Technology
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