During sustained maximal voluntary contractions (MVCs), most fatigue occurs within the muscle, but some occurs because voluntary activation of the muscle declines (central fatigue), and some of this reflects suboptimal output from the motor cortex (supraspinal fatigue). This study examines whether supraspinal fatigue occurs during a sustained submaximal contraction of 5% MVC. Eight subjects sus...

Figure – Lateral epicondylitis, or tennis elbow, occurs most frequently in the extensor carpi radialis brevis tendon. The high incidence of lateral epicondylitis in patients with cervical radiculopathy suggests a correlation between C6 and C7 radiculopathy and the onset of lateral epicondylitis. Background A diagnosis of lateral epicondylitis, described as a condition causing pain in the latera...

This study aimed to explore the clinical effect of the coronoid process fractures with anteromedial approach. 18 cases of coronoid process fractures treated with the anteromedial approach were enrolled. Causes of injury included traffic injuries in 3 cases and fall on the ground in 15 cases. There were 6 cases of type I, 10 cases of type II, and 2 cases of type III according to the O’Driscoll c...

We report the results of performing a pronating osteotomy of the radius, coupled with other soft-tissue procedures, as part of an upper limb functional surgery programme in tetraplegic patients with supination contractures. In total 12 patients were reviewed with a mean follow-up period of 60 months (12 to 109). Pre-operatively, passive movement ranged from a mean of 19.2 degrees pronation (-70...

BACKGROUND Adaptation to constant stimulation has often been used to investigate the mechanisms of perceptual coding, but the adaptive processes within the proprioceptive channels that encode body movement have not been well described. We investigated them using vibration as a stimulus because vibration of muscle tendons results in a powerful illusion of movement. METHODOLOGY/PRINCIPAL FINDIN...

Figure – Lateral epicondylitis, or tennis elbow, occurs most frequently in the extensor carpi radialis brevis tendon. The high incidence of lateral epicondylitis in patients with cervical radiculopathy suggests a correlation between C6 and C7 radiculopathy and the onset of lateral epicondylitis. Background A diagnosis of lateral epicondylitis, described as a condition causing pain in the latera...

PURPOSE To characterize and evaluate the repeatability of ultrasound recorded blood flow in the axillary artery during one-arm dynamic elbow flexion. METHOD 11 healthy women (23 +/- 0.9 yr, 168 +/- 1.7 cm, 63 +/- 1.1 kg) performed 90 degrees elbow flexion in supine position. Mean maximum blood velocity was recorded by ultrasound during and after two submaximal loads, representing 16 and 24% o...

Neural coupling of proximal and distal upper limb segments may have functional implications in the recovery of hemiparesis after stroke. The goal of the present study was to investigate whether the stretch reflex response magnitude of spastic finger flexor muscles poststroke is influenced by sensory input from the shoulder and the elbow and whether reflex coupling of muscles throughout the uppe...