BACKGROUND Tai chi is a form of exercise derived from the martial art folk traditions of China. The force used in tai chi includes different principles of mechanical advantage. No studies on the kinematic features of tai chi exercise have been published. OBJECTIVE To analyse the kinematics and electromyographic characteristics of tai chi. METHODS An experienced tai chi master was asked to p...

AIMS To compare the postoperative surgical outcomes and the changes in deviation achieved per millimetre of recession in patients treated by graded unilateral medial rectus (UMR) or bilateral medial rectus (BMR) recession for small to large angle esotropia with a minimum follow-up of 6 months. METHODS In a retrospective, consecutive and interventional case series, 102 patients underwent UMR r...

PURPOSE To evaluate the extraocular muscle enlargement in dysthyroid opthalmopathy. METHOD Extraocular muscle enlargement was assessed by orbital computed tomography (CT) in 573 patients with dysthyroid ophthalmopathy in order to investigate the frequency and exact location of extraocular muscle enlargement and the clinical features of related ocular symptoms in patients with dysthyroid ophth...

249 words; text 6,646 words; 8 figures. Articles in PresS. J Neurophysiol (July 20, 2005). doi:10.1152/jn.01157.2004 Copyright © 2005 by the American Physiological Society. Demer and Clark Extraocular Muscle MRI During Ocular Counter-rolling JN-01157-2004.R2, page 2 Abstract The rectus extraocular muscle (EOM) pulleys constrain EOM paths. During visual fixation with head immobile, actively-cont...

PURPOSE This study presents a detailed anatomic analysis of the undisturbed connective tissues that surround the horizontal extraocular muscles (EOMs) of humans. Emphasis is placed on those EOM orbital side tissues that, in previous MRI studies, were assumed to couple the muscle to the pulley. METHODS Serial 5-mum sections were prepared from paraffin-embedded blocks of the lateral and medial ...

We evaluate the surgical outcomes and surgical responses of medial rectus muscle (MR) recession patients with thyroid eye disease (TED)-related esotropia (ET). The surgical dose-response curves 1 week postoperatively and at the final visit were analyzed. Univariable and multivariable linear regression analyses were applied to investigate factors influencing surgical dose-response. A total of 43...

PURPOSE It has been proposed that the lateral rectus (LR), like many skeletal and craniofacial muscles, comprises multiple neuromuscular compartments subserving different physiological functions. To explore the anatomic potential of compartmentalization in all four rectus extraocular muscles (EOMs), evidence was sought of possible regional selectivity in intramuscular innervation of all rectus ...

For a given position of the eye in the orbit, most abducens motoneurons (LRMNs) fire at higher rates in converged gaze than when convergence is relaxed, implying that lateral rectus (LR) muscle force will be higher for a given eye position in convergence. If medial rectus (MR) muscle force balances LR force, it too would be higher in convergence, that is, LRMN recording studies predict horizont...