The present study examined neural activity in the shoulder/elbow region of primary motor cortex (M1) during a whole-limb postural task. By selectively imposing torques at the shoulder, elbow, or both joints we addressed how neurons represent changes in torque at a single joint, multiple joints, and their interrelation. We observed that similar proportions of neurons reflected changes in torque ...

When arm movements are perturbed by a load, how does the nervous system adjust control signals to reduce error? While it has been shown that the nervous system is capable of compensating for the effects of limb dynamics and external forces, the strategies used to adapt to novel loads are not well understood. We used a robotic exoskeleton [kinesiological instrument for normal and altered reachin...

Joint injection of the elbow is a useful diagnostic and therapeutic tool for the family physician. In this article, the injection procedures for the elbow joint, medial and lateral epicondylitis, and olecranon bursitis are reviewed. Persistent pain related to inflammatory conditions responds well to injection in the region. Indications for elbow joint injection include osteoarthritis and rheuma...

Elbow fractures are not uncommon in children, and some are associated with neurovascular injuries. Having a nerve injury in an elbow fracture without dislocation is rare and was not described in the literature. Here, we have reported probably the first case of an ulnar nerve injury in an elbow fracture without dislocation. A 9-year-old female presented to the emergency department after falling ...

An unusual elbow injury occurring as a result of a poorly executed breakfall in judo is recorded. The treatment, possible mechanism and outcome are described. The poor prognosis of severe lesions is emphasised with reference to current literature.

Congenital radial head dislocation is a rare condition which is, however, the most common of all congenital pathologies of the elbow joint. This paper is a case report on a patient presenting with moderate pain and discomfort in one of his elbow joints, both of which were found to be affected by this condition. He was treated by surgery which consisted of resection of the proximal radius and pa...

Parkinsonian rigidity has been thought to be constant through a full range of joint angle. The aim of this study was to perform a detailed investigation of joint angle dependency of rigidity. We first measured muscle tone at the elbow joint in 20 healthy subjects and demonstrated that an angle of approximately 60° of flexion marks the division of two different angle-torque characteristics. Then...