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Accuracy of conventional motion capture in measuring hip joint center location and hip rotations during gait, squat, and step-up activities.
Lopez, Sarah; Johnson, Camille; Frankston, Naomi; Ruh, Ethan; McClincy, Michael; Anderst, William.
Afiliación
  • Lopez S; University of Pittsburgh, Department of Orthopaedic Surgery, United States.
  • Johnson C; University of Pittsburgh, Department of Orthopaedic Surgery, United States.
  • Frankston N; University of Pittsburgh, Department of Orthopaedic Surgery, United States.
  • Ruh E; University of Pittsburgh, Department of Orthopaedic Surgery, United States.
  • McClincy M; University of Pittsburgh, Department of Orthopaedic Surgery, United States.
  • Anderst W; University of Pittsburgh, Department of Orthopaedic Surgery, United States. Electronic address: anderst@pitt.edu.
J Biomech ; 167: 112079, 2024 Apr.
Article en En | MEDLINE | ID: mdl-38599019
ABSTRACT
Accurate measurements of hip joint kinematics are essential for improving our understanding of the effects of injury, disease, and surgical intervention on long-term hip joint health. This study assessed the accuracy of conventional motion capture (MoCap) for measuring hip joint center (HJC) location and hip joint angles during gait, squat, and step-up activities while using dynamic biplane radiography (DBR) as the reference standard. Twenty-four young adults performed six trials of treadmill walking, six body-weight squats, and six step-ups within a biplane radiography system. Synchronized biplane radiographs were collected at 50 images per second and MoCap was collected simultaneously at 100 images per second. Bone motion during each activity was determined by matching digitally reconstructed radiographs, created from subject-specific CT-based bone models, to the biplane radiographs using a validated registration process. Errors in estimating HJC location and hip angles using MoCap were quantified by the root mean squared error (RMSE) across all frames of available data. The MoCap error in estimating HJC location was larger during step-up (up to 89.3 mm) than during gait (up to 16.6 mm) or squat (up to 31.4 mm) in all three anatomic directions (all p < 0.001). RMSE in hip joint flexion (7.2°) and abduction (4.3°) during gait was less than during squat (23.8° and 8.9°) and step-up (20.1° and 10.6°) (all p < 0.01). Clinical analysis and computational models that rely on skin-mounted markers to estimate hip kinematics should be interpreted with caution, especially during activities that involve deeper hip flexion.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Organotiofosfatos / Captura de Movimiento / Articulación de la Rodilla Límite: Adult / Humans Idioma: En Revista: J Biomech Año: 2024 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Organotiofosfatos / Captura de Movimiento / Articulación de la Rodilla Límite: Adult / Humans Idioma: En Revista: J Biomech Año: 2024 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos