0000000000528393
AUTHOR
I Michiels
The deltoid muscle: an electromyographical analysis of its activity in arm abduction in various body postures
We have carried out an electromyographical examination of the activity of five different regions of the deltoid muscle during abduction/adduction in various body postures with different biomechanical actions of arm gravity. The results show that the deltoid action is highly differentiated in its different regions and is not restricted only to the generation of an abducting moment in the shoulder joint. There is obviously a biomechanical contribution, mainly by its spinal and clavicular regions, to the stabilization of the glenohumeral joint and to the control of the selected plane of abduction.
Kinematics of shoulder abduction in the scapular plane
In this paper the kinematics of arm abduction in the scapular plane of 38 healthy experimental subjects is reported. The ratio of the glenohumoral and the scapulothoracic components of the motion were determined and the influence of the abduction speed and of the external load on it were investigated. The investigation of the effect of abduction speed involved all 38 subjects. Each of them performed one slow and one fast abduction. Statistical analysis showed that there were large differences between individuals, but that for any one individual the abduction process is essentially reproducible. For the one individual there is a strong, linear relationship between glenohumeral and scapulotho…
Der Fixateur externe in der Stabilisation der Beckenringfrakturen
Die Behandlung der Beckenfrakturen hat in den letzten Jahren eine sturmische Entwicklung erfahren. Wo fruher kaum eine Indikation bzw. Moglichkeit zur Fixierung der Fraktur gesehen wurde, bestand die einzig mogliche Therapie in einer konservativen Behandlung durch Hangematte, ggf. kombiniert mit einer Extension [2a, 11]. Nachteile waren die langfristige Immobilisatiion mit allen ihren Folgen sowie die schwierige Nachbehandlung [5,7].
Candida arthritis: cellular immune responses of synovial fluid and peripheral blood lymphocytes to Candida albicans.
A case of septic Candida albicans arthritis of the knee in a patient with systemic candidiasis is presented. Systemic and intra-articular cellular immune responses to C albicans and various bacterial antigens were monitored for 15 weeks. It is shown that the candida induced blastogenesis of synovial fluid lymphocytes was much more stimulated than that of peripheral blood lymphocytes, and that the proportion of activated cells expressing HLA class II antigens was markedly increased in the synovial fluid. Strong cellular immune responses to Candida albicans could still be shown many weeks after the synovial fluid aspirates had become sterile. For the first time synovial fluid derived, CD4 pos…