J C Dimnet

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A prospective analysis of the sagittal profile of 100 healthy young adult volunteers was carried out in order to evaluate the relationship between the shape of the pelvis and lumbar lordosis and to create a databank of the morphologic and positional parameters of the pelvis and spine in a normal healthy population. Inclusion criteria were as follows: no(More)
In order to establish a sagittal plane curve reference table for standing subjects examined laterally, we determined an easily reproducible standard posture. A sample of 100 healthy subjects from 20 to 29 years of age, was chosen (43 women, 57 men). The reciprocal angulations of each vertebral body in relation to the others were fed into a digitalizer and(More)
The kinematic function of the cervical spine has been examined previously by means of cineradiography or a sequence of lateral X-rays, usually of a flexion-extension range of motion. Interpretation of these studies, however, presents difficulties. One of the major problems is how to extract information from the X-ray images which is not only explicit,(More)
PURPOSE OF THE STUDY The main objective of this study was to describe the morphology and the mechanism underlying the organization of lumbar lordosis in terms of position and shape of the pelvis. A classification of lumbar lordosis was proposed based on the orientation of the sacral plane. MATERIAL AND METHODS One hundred sixty asymptomatic young adult(More)
  • L Chkze, C Gutierrez, R San, Marcelino, J Dimnet
  • 2003
Motion biomechanics in living subjects is very often obtained from data provided by optoelectronic systems. They describe 3-dimensional trajectories of either emitting or reflective markers fixed upon subject body segments. Is it possible to use these trajectories to define the 3-dimensional kinematics of articular groups while carrying out a task? In this(More)
The purpose of this study was to determine in vitro the centers of rotation of thoracic functional spinal units in the sagittal plane. The center of rotation is a convenient concept and part of a precise method of documenting the kinematics of a joint moving in a plane. Fresh cadaver functional spinal units from the thoracic region were utilized. Six load(More)
A loading or "balance" point was sought that could serve as a functional reference for mechanically testing spinal motion segments. This point is located above the in-vitro motion segment where, when an axial compressive load is applied, the segment exhibits minimal coupled rotation. The balance point is a reliable indicator of the mechanical(More)
The proposed study consists in moving several bones such as pelvis, femur and tibia in conditions as similar as possible to those obtained in a walking subject, to evidence the functioning of this hip and knee joints. The analysis is performed during the stance phase when the joints are loaded. This study is the first phase of a research consisting in: (i)(More)
Dynamometric studies of grip strength are widely used in clinics. We present a clinic dynamometer that can be used to measure pronation and supination moments while the subject being tested is holding a cylindrical handle in neutral pronosupination. One hundred volunteers without any previous history of upper extremity injury were tested in pronation and(More)