Because of its inherent superior soft tissue contrast and lack of ionizing radiation, magnetic resonance imaging (MRI) is highly suited to study the complex anatomy of the shoulder joint, particularly when assessing the relatively high incidence of shoulder injuries in young, athletic patients. This review aims to serve as a primer for understanding shoulder MRI in an algorithmical approach, in...

Shoulder complaints are common in the elderly and hamper daily functioning. These complaints are often caused by tears in the muscle-tendon units of the rotator cuff (RC). The four RC muscles stabilize the shoulder joint. While some RC muscles are frequently torn in shoulder complaints others remain intact. The pathological changes in RC muscles are poorly understood. We investigated changes in...

[Purpose] The aim of the present study was to identify the effects of an unstable support surface (USS) on the activities of trunk and lower extremity muscles during pulley-based shoulder exercise (PBSE). [Subjects] Twenty healthy college students were included in this study. [Methods] Surface EMG was carried out in twenty healthy adult men. The activities of trunk and lower extremity muscles p...

BACKGROUND The study objective was to assess the influence of a SLAP lesion on onset of EMG activity in shoulder muscles during a front on rugby football tackle within professional rugby players. METHODS Mixed cross-sectional study evaluating between and within group differences in EMG onset times. Testing was carried out within the physiotherapy department of a university sports medicine cli...

Scott, Stephen H. Comparison of onset time and magnitude of magnitude of motor cortical cell discharge covaried with activity for proximal arm muscles and motor cortical cells before the magnitude of muscle force (Evarts 1968), and that the reaching movements. J. Neurophysiol. 77: 1016–1022, 1997. The ensemble activity of cells could roughly predict the temporal activity of motor cortical cells...

AIMS To quantify the relative contribution of work related physical factors, psychosocial workplace factors, and individual factors and aspects of somatisation to the onset of neck/shoulder pain. METHODS Four year prospective cohort study of workers from industrial and service companies in Denmark. Participants were 3123 workers, previously enrolled in a cross sectional study, where objective...

Multijoint reflex coupling could impact the voluntary control of functional arm movements in people post stroke. The multijoint responses to active-assist, constant-velocity movements of the elbow joint were measured in 14 individuals post stroke and 9 neurologically intact controls. Resulting responses in the stroke group illustrated a change in the reflex coupling of the elbow and shoulder mu...

BACKGROUND Monomelic amyotrophy is an uncommon, benign, unilateral disorder of the lower motor neurons, affecting predominantly the hand and forearm muscles. Proximal involvement of the arm and shoulder muscles is an unusual presentation that has been rarely reported in the literature. CASE PRESENTATION A 28-year-old white man presented with insidious-onset, slowly progressive, unilateral wea...

Background. The shoulder joint has a very complex structure. Normal shoulder function is dependent on joint stability and proper neuromuscular control. Given its anatomical structure and range of movement, this joint is highly susceptible to numerous disorders and injuries. Normal stability of the shoulder guarantees physiological function, and is also the most important element of injury preve...