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IDENTIFICATION OF KNEE FRONTAL PLANE KINEMATIC PATTERNS IN NORMAL GAIT BY PRINCIPAL COMPONENT ANALYSIS

Laboratoire de recherche en Imagerie et Orthopédie, Centre de recherche du CHUM and École de technologie supérieure, Montréal (Qc), Canada

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ALEXANDRE FUENTES

Laboratoire de recherche en Imagerie et Orthopédie, Centre de recherche du CHUM and École de technologie supérieure, Montréal (Qc), Canada

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NATHALY GAUDREAULT

École de réadaptation, Sherbrooke University, Sherbrooke (Qc), Canada

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AMAR MITICHE

Institut National de la Recherche Scientifique, INRS-EMT, Montréal (Qc), Canada

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RACHID AISSAOUI

Laboratoire de recherche en Imagerie et Orthopédie, Centre de recherche du CHUM and École de technologie supérieure, Montréal (Qc), Canada

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NICOLA HAGMEISTER

Laboratoire de recherche en Imagerie et Orthopédie, Centre de recherche du CHUM and École de technologie supérieure, Montréal (Qc), Canada

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, and

JACQUES A. DE GUISE

Laboratoire de recherche en Imagerie et Orthopédie, Centre de recherche du CHUM and École de technologie supérieure, Montréal (Qc), Canada

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https://doi.org/10.1142/S0219519413500267Cited by:14 (Source: Crossref)

Abstract

The purpose of this study was to identify meaningful gait patterns in knee frontal plane kinematics from a large population of asymptomatic individuals. The proposed method used principal component analysis (PCA). It first reduced the data dimensionality, without loss of relevant information, by projecting the original kinematic data onto a subspace of significant principal components (PCs). This was followed by a discriminant model to separate the individuals' gait into homogeneous groups. Four descriptive gait patterns were identified and validated by clustering silhouette width and statistical hypothesis testing. The first pattern was close to neutral during the stance phase and in adduction during the swing phase (Cluster 1). The second pattern was in abduction during the stance phase and tends into adduction during the swing phase (Cluster 2). The third pattern was close to neutral during the stance phase and in abduction during the swing phase (Cluster 3) and the fourth was in abduction during both the stance and the swing phase (Cluster 4).

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