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OBJECTIVE To assess the reliability of force direction dependent EMG parameters in shoulder muscles for future clinical research. DESIGN EMG measurements of shoulder muscles including the rotator cuff were performed during isometrical external loading in various directions covering 360 degrees in a plane perpendicular to the humeral axis. BACKGROUND(More)
OBJECTIVE To study the effect of botulinum toxin A in the subscapular muscle on shoulder pain and humerus external rotation. METHODS 22 stroke patients with spastic hemiplegia, substantial shoulder pain and reduced external rotation of the humerus participated in a randomised, double blind, placebo controlled effect study. Injections of either botulinum(More)
OBJECTIVE: The objective of this study is to verify the assumption that the three-dimensional (3-D) shoulder motions can be described by means of an interpolation of statically recorded postures and thus, support the application of non-invasive but static techniques for motion analysis of the shoulder. BACKGROUND: During shoulder motions the scapula moves(More)
In a static force task the electromyographic level of 14 shoulder muscles including 3 rotator cuff muscles was related to force direction. Surface and wire electrodes were used. The force direction of maximal electromyography (principal action) was identified for every muscle. The principal action expresses the function of a muscle in a special situation.(More)
OBJECTIVE To present an isometric method for validation of a shoulder model simulation by means of experimentally obtained electromyography and addressing all muscles active around the shoulder joints. BACKGROUND Analysis of muscle force distribution in the shoulder by means of electromyography during motion tasks is hampered by artificial and non-linear(More)
To investigate the origin of fractures at the distal locking site of the Gamma nail, we loaded ten paired human cadaver femora fixed with a Gamma nail in torsion until they fractured. When an awl was hammered in to start the hole for distal locking a fissure appeared in the lateral cortex of all the femora, and the mean torsional load to create a fracture(More)
Purpose To describe factors associated with RTW in patients 2–5 years after stroke. Methods Cross sectional study, including patients 2–5 years after hospitalization for a first-ever stroke, who were <65 years and had been gainfully employed before stroke. Patients completed a set of questionnaires on working status and educational level, physical(More)
BACKGROUND This study aims to contribute to the knowledge of the influence of comorbidity in OA. The objectives of the study were (i) to describe the prevalence of comorbidity and (ii) to describe the relationship between comorbidity (morbidity count, severity and the presence of specific diseases) and limitations in activities and pain in elderly patients(More)
Goal of the study was to investigate the effect of muscle length and load on EMG of shoulder muscles. Surface EMG's were taken of seven subjects during isometric abduction. One maximal and three submaximal tasks were performed. The force was always at right angles to the arm. Arm and electrode position were carefully standardized. EMG's for most muscles(More)
This study identified which residual-limb quality factors are related to functional mobility 1 year after transtibial (TT) amputation. A group of 28 TT amputees were evaluated with respect to their functional mobility (Prosthesis Evaluation Questionnaire [PEQ], Locomotor Index, Timed Up and Go test). The general (Chakrabarty score) and bony (tibial length,(More)