veículo de difusão de informações em análise de marcha, reabilitação e biomecânica, captura de movimento para produções industriais
clinical gait analysis, rehabilitation and biomechanics, industrial "motion capture" (MoCap)

Papers: Upper Limbs

  • A framework for the definition of standardized protocols
  • A framework for the definition of standardized protocols for measuring upper-extremity kinematics
    Increasing interest in upper extremity biomechanics has led to closer investigations of both segment movements and detailed joint motion. Unfortunately, conceptual and practical differences in the motion analysis protocols used up to date reduce compatibility for post data and cross validation analysis and so weaken the body of knowledge. This difficulty highlights a need for standardised protocols, each addressing a set of questions of comparable content. The aim of this work is therefore to open a discussion and propose a flexible framework to support: (1) the definition of standardised protocols, (2) a standardised description of these protocols, and (3) the formulation of general recommendations.
  • Precision of shoulder anatomical landmark calibration by two approaches
  • Precision of shoulder anatomical landmark calibration by two approaches: A CAST-like protocol and a new anatomical palpator method
    The objective of the study was to compare the precision of shoulder anatomical landmark palpation using a CAST-like method and a newly developed anatomical palpator device (called A-Palp) using the forefinger pulp directly. The repeated-measures experimental design included four examiners that twice repeated measurements on eleven scapula and humerus anatomical landmarks during two sessions. Inter-session and inter-examiner precision was determined on volunteers. A-Palp accuracy was obtained from in vitro measurements and using virtual palpation on 3D bone models. Error propagation on the motion representation was also analyzed for a continuous motion of abduction movement performed in the shoulder joint.
  • Synergic analysis of upper limb target-reaching movements
  • The topological invariance and synergies of human movements are discussed through the analysis and comparison of upper-limb target-reaching tasks. Five subjects were asked to perform different target-reaching tasks with different indices of difficulty, and the movements were captured using a Vicon 3D motion analysis system.
  • The Influence of Dynamic Polyelectromyography
  • The Influence of Dynamic Polyelectromyography in Formulating a Surgical Plan in Treatment of Spastic Elbow Flexion Deformity
    Objective: To determine the influence of motor-control analysis with dynamic electromyography on surgical planning in patients with spastic elbow flexion deformity.

Tronco - Trunk:

  • Measurement of lumbar lordosis as a component of clinical gait analysis
  • A new method is described for the measurement, during clinical gait analysis, of the angle of lumbar lordosis, defined as the difference in the sagittal plane angle between the two ends of the lumbar curve. The use of additional markers mounted directly on the skin of the back was found to be unsatisfactory. The use of skin-mounted rigs, at the two ends of the lumbar curve, was sufficiently accurate and convenient for routine adoption in a clinical gait analysis setting. Reliability studies showed good testretest agreement for both static and dynamic measurements of lumbar lordosis.
  • Relationships between the movements of the pelvis and lumbar spine
  • Three-dimensional relationships between the movements of the pelvis and lumbar spine during normal gait
    The three-dimensional motions of the pelvis and lumbar spine in walking were measured, in 20 normal adult males, using “Vicon” optoelectronic system, with reflective targets attached to lightweight rigs over the thoracolumbar junction and upper sacrum.
  • The effects of pelvic movement on lumbar lordosis in the standing position
  • The purpose of this study was to investigate whether the maneuver of altering the angle of pelvic tilt when standing is effective in changing the angle of lumbar lordosis. The importance of the study was to establish a scientific basis for a common clinical assumption.