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Selected Publication:
SHR Neuro Cancer Cardio Lipid Metab Microb
Zwick, EB; Svehlik, M; Steinwender, G; Saraph, V; Linhart, WE.
Genu recurvatum in cerebral palsy--part B: hamstrings are abnormally long in children with cerebral palsy showing knee recurvatum.
J PEDIATR ORTHOPAED PART B. 2010; 19(4): 373-378.
Doi: 10.1097/BPB.0b013e32833822d5
Web of Science
PubMed
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- Leading authors Med Uni Graz
- Svehlik Martin
- Zwick Bernhard-Ernst
- Co-authors Med Uni Graz
- Linhart Wolfgang
- Saraph Vinay
- Steinwender Gerhardt
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- Abstract:
- Hyperextension of the knee in stance (knee recurvatum) is a common disorder in patients with spastic cerebral palsy (CP). A group 35 children with CP (47 lower limbs) was divided into two subgroups according to the timing of maximum knee extension during the stance phase of gait. Gait analysis and musculoskeletal modelling data were compared with a control group of 12 normally developing children. We observed no difference in kinematics between the CP groups who showed an equinus position of the foot at initial contact. Both groups showed increased external extensor moments across the knee. The muscle-tendon lengths of the hamstrings were abnormally long at initial contact, and in both recurvatum groups, contracted faster compared with the control group. Surface electromyography revealed prolonged activity of the hamstrings in stance and early activation in swing. Abnormally long hamstrings at initial contact together with equinus position of the foot are the main causes of genu recurvatum in children with CP.
- Find related publications in this database (using NLM MeSH Indexing)
- Biomechanics -
- Cerebral Palsy - complications Cerebral Palsy - pathology Cerebral Palsy - physiopathology
- Child -
- Electromyography -
- Equinus Deformity - etiology Equinus Deformity - pathology Equinus Deformity - physiopathology
- Female -
- Gait - physiology
- Humans -
- Joint Instability -
- Knee Joint -
- Male -
- Muscle, Skeletal - pathology Muscle, Skeletal - physiopathology
- Tendons - pathology Tendons - physiopathology
- Find related publications in this database (Keywords)
- cerebral palsy
- electromyography
- gait analysis
- hamstrings
- knee hyperextension
- musculoskeletal modelling