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Reliability of Visual Classification of Sagittal Gait Patterns in Patients with Bilateral Spastic Cerebral Palsy

 Dong Jin Kim ; Eun Sook Park ; Dong-wook Rha ; Young Uhk Kim ; Ki Jung Kim ; Eun Geol Sim 
 Annals of Rehabilitation Medicine, Vol.35(3) : 354~360, 2011 
Journal Title
 Annals of Rehabilitation Medicine 
Issue Date
Objective To investigate the reliability of inspection-based classifi cation of sagittal gait patterns in children with bilateral spastic cerebral palsy (CP). Method Video clip recordings of gait patterns and sagittal kinematic data obtained by a computerized motion analysis system from 91 patients with bilateral spastic CP were reviewed. The abnormal gait patterns were classifi ed into 4 groups using the method described by Rodda et al. Visual observation-based classifi cation (visual classifi cation) was compared with classifi cation by 3D analysis-based methods (3D classifi cation). Th e reliabilities of visual classifi cations made by an experienced physician and a trainee physician were analyzed.Results Th e consistency of inspection-based gait classifi cation using kinematic data analysis was demonstrated by an experienced physician (Kappa coeffi cient (k)=0.67, p<0.001). However, the consistency was low for the trainee physician (k=0.37, p<0.001). Group III (apparent equinus) was commonly confused with group IV (crouch gait) by the trainee physician, resulting in lower agreement for those two evaluation groups than for other patterns. Video observation showed low reliability in comparisons made between the experienced and the trainee physician (k= 0.37, p<0.001).Conclusion Th ere was substantial agreement of gait classifi cation between video observation and kinematic data analysis by the experienced physician, but not by the trainee physician. Low reliability was also demonstrated for inspection-based gait classifi cation
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