Purpose: To develop a musculo-skeletal dynamic model for simulating hand grasp by means of FES in paretic hand. Methods: The skeletal model, which consisted of humerus, radius, ulna and bones of hand, was developed from CT data of. The muscle model, which had been designed by Hase, was developed about flexor carpi ulnaris, felxor carpi radialis, extensor carpi ulnaris, extensor carpi radialis l...

Transfer of the flexor carpi ulnaris (FCU) to replace the power of the paralysed extensor digitorum communis and extensor pollicies longus has been described in the literature. However the use of FCU for strengthening flexor digitorum superficialis (FDS) is relatively not widely known. In this report the use of the technique is dicussed to successfully restore the strength of the fingers of a l...

The interaction among the motor units of the extensor carpi radialis longus (ECRL) and the extensor carpi ulnaris (ECU) muscles in man was studied during wrist extensions in which the two muscles acted as synergists. Intramuscular recordings were obtained using special quadrifilar needle electrodes. Isometric wrist extensions at 20-30% of the maximal effort were studied. The electromyographic (...

We asked human subjects to make accurate step-tracking movements of the wrist to targets that required 5 degrees-30 degrees of radial or ulnar deviation. Speed instructions were given prior to each trial. Muscle activity was recorded from extensor carpi radialis longus (ECRL) and extensor carpi ulnaris (ECU) using surface electrodes. The agonist muscle initiated each movement with a brief burst...

We present a group of 20 patients who underwent transposition of the extensor carpi radialis longus to the extensor pollicis longus between April 2003 and September 2007. The group was divided into ten patients with an early dynamic splint and ten patients with a static plaster cast following the standard rehabilitation protocols. We compared these two rehabilitation protocols. The post-rehabil...

The intersection syndrome, described since the 19th century, is an uncommon disorder associated with the abductor pollicis longus and extensor pollicis brevis bellies (first dorsal compartment) rubbing against the extensor carpi radialis longus and brevis tendons (second dorsal compartment). Overuse occurred in occupational setting was barely described although it could lead to compensation by ...

Summary The intersection syndrome, described since the 19 century, is an uncommon disorder associated with the abductor pollicis longus and th extensor pollicis brevis bellies (first dorsal compartment) rubbing against the extensor carpi radialis longus and brevis tendons (second dorsal compartment). Overuse occurred in occupational setting was barely described although it could lead to compens...

We report the case of a 40-year-old woman with pseudoachondroplasia (PSACH), with a heterozygous mutation (c.806A > G, p.Asp269Gly) located in the Type 3 repeats domain of the cartilage oligomeric matrix protein gene, who complained of the unusual symptom of painful locking of the wrist. Her condition was caused by a non-traumatic enlargement of the extensor carpi radialis longus (ECRL) and bre...