In this study we investigated whether the spatial distribution of surface electromyographic (EMG) amplitude can be used to describe the activation of muscle portions with different biomechanical actions. Ten healthy subjects performed isometric contractions aimed to selectively activate a number of forearm muscles or muscle subportions. Monopolar electromyographic signals were collected with an...

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...

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...

OBJECTIVE To offer the basic data about the causes and distribution of hand tingling, symptoms and physical findings, and pressure pain threshold in desk workers. METHODS Five physiatrists participated in the screening test composed of history and physical examination. A total of 876 desk workers were evaluated and of them 37 subjects with hand tingling were selected. For further analyzing, d...

Disrupted triphasic electromyography (EMG) patterns of agonist and antagonist muscle pairs during fast goal-directed movements have been found in patients with hypermetria. Since peripheral electrical stimulation (ES) and motor training may modulate motor cortical excitability through plasticity mechanisms, we aimed to investigate whether temporal ES-assisted movement training could influence p...

Lateral epicondylitis refractory to conservative care can be effectively treated by arthroscopic release of the extensor carpi radialis brevis origin. Advantages to the technique include the ability to address other intra-articular sources of pain (capsular tears, radiocapitellar plica, etc.), a potentially faster return to work and sports, and a smaller incision. This article provides step-by-...

This study explored the effect of vibration of the forearm extensors on motor cortical excitability and the influence of stimulus duration. Sixteen healthy volunteers between 23 and 42 years old participated in one or two studies. We applied 15 or 30 min of 100 Hz, 0.5 mm-amplitude vibration to the extensor carpi radialis longus (ECRL) muscle. Cortical excitability was measured as the magnitude...

It has been shown in the bullfrog, Rana catesbeiana Shaw 1802, that certain forelimb muscles in males have different contractile properties when compared with females, which may result from adaptation for amplexus. We extended this study to a distantly related species, Bufo marinus Linnaeus 1758, by testing the isometric contractile properties of three muscles, abductor indicus longus (AIL), an...

OBJECTIVES To study the impact of tendon transfer surgery for ulnar claw hand correction in children with leprosy. SUBJECTS AND METHODS All the children who underwent reconstructive surgery for ulnar nerve paralysis during the period 2007 to 2012 were included in the study. Unassisted angle, grasp contact, pinch contact and functional assessment were the main outcome measures. All the surgica...