We describe the case of a 13-year-old patient with a left wrist physeal fracture of the ulna and radius. X-Ray showed a Salter-Harris type II injury of the radius, and CT and MRI identified the following: type II epiphysiolysis of the radius with a metaphyseal wedge and type IV fracture of the ulna, with interposition in the focus of the fracture of the extensor carpi ulnaris tendon, as well as...

The purpose was to investigate the influence of muscle pain on work performance during computer work with digitizer and puck. Muscle pain was induced by infusion of hypertonic saline in the trapezius and the extensor carpi ulnaris (ECU) muscles on two separate days. Twelve healthy subjects participated. A computer task was performed in three 6 min sessions: baseline, pain, after pain. The compu...

Giant cell tumor (GCT) involving distal ulna being rare with reported rate of 0.45-3% of all GCT cases; the literature has only sporadic cases reported. Various treatment options have been proposed, and dilemma exist whether to do resection alone or resection combined with stabilization or reconstruction. Also, there is no conclusive evidence regarding the method of stabilization or reconstruct...

Myoelectric artificial limbs can significantly advance the state of the art in prosthetics, since they can be used to control mechatronic devices through muscular activity in a way that mimics how the subjects used to activate their muscles before limb loss. However, surveys indicate that dissatisfaction with the functionality of terminal devices underlies the widespread abandonment of prosthes...

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...

background lesions in peripheral nerves are highly prevalent in the upper extremity. the present study compares different tendon transfer surgeries in patients with radial nerve palsy. methods fifty patients with radial nerve palsy were randomly selected among patients who referred to tehran 15th khordad hospital during 2006-2011. they were divided into two groups of 17 and 33 subjects. single ...

Inability to actively supinate the forearm makes common activities of daily living and certain vocational activities awkward or impossible to perform. A total of 11 patients with deficient supination of the arm underwent transfer of the tendon of flexor carpi ulnaris to the split tendon of brachioradialis with its bony insertion into the radial styloid left intact. Active supination beyond neut...