Background: The purpose of this study was to evaluate the significance of the Q angle with respect to the patella position. We assess the correlation between the Q angles (calculated by clinical exam) in different positions and CT indices (with more impression on TTTG) Method: A total number of 68 knee joints of 50 cases entered the study. Clinical examination was used to measure Q angle (in 3 ...

The goal of this paper is to access to pelvis position and morphology in standing posture and to determine the relative locations of their articular surfaces. This is obtained from coupling biplanar radiography and bone modeling. The technique involves different successive steps. Punctual landmarks are first reconstructed, in space, from their projected images, identified on two orthogonal stan...

In certain disease states prolongation of the QT interval has been shown to be arrhythmogenic. Whether QTc interval changes with position and thus whether certain positions are more arrhythmogenic than others is not known for different diseases that predispose to arrhythmias, and was therefore studied. Patients with left ventricular hypertrophy and heart failure, and the appropriate matched con...

BACKGROUND Previous studies of death during law enforcement restraint have focused on lying restraint positions; this study extends this work to seated restraint positions. METHODS Lung function in a standing control position was compared with lung function in seated positions using 40 volunteers. RESULTS No significant reduction in lung function was detected in an upright seated position. ...

The dose dependent responses to atropine of 11 indices of autonomic function were investigated in 10 healthy volunteers. Five subjects were given cumulative doses of atropine (0.1-2.0 mg/70 g, intravenously). The other five received equivalent volumes of water for injection. The ratio of the longest to the shortest R-R intervals in the electrocardiogram during forced expirations and deep inspir...

Objectives. The aim of the study was to assess the change of sagittal spinal curvatures in children with generalized joint hypermobility (GJH) instructed with "straighten your back" command (SYB). Methods. The study included 56 children with GJH. The control group consisted of 193 children. Sacral slope (SS), lumbar lordosis (LL), global thoracic kyphosis (TK), lower thoracic kyphosis (LK), and...

This study tested the hypotheses that all major joints along the longitudinal axis of the body are equally active during quiet standing and that their motions are coordinated to stabilize the spatial positions of the center of mass (CM) and head. Analyses of the effect of joint configuration variance on the stability of the CM and head positions were performed using the uncontrolled manifold (U...

OBJECTIVE Changes in posture are of concern because of their association with pain or impaired physical function. Previous studies that have used computer-aided video motion analysis systems to measure posture have been compromised by the use of problematic models of skin marker placement. This study aimed to quantify and compare sagittal spinal posture in standing and sitting between young and...