The authors report the case of a 39-year-old woman with pain in the right dominant hand after initiating a crafts course. Clinical examination revealed tenderness on the volar side of the thumb and wrist. Simultaneous flexion of the distal interphalangeal joint of the index finger with flexion of the interphalangeal joint of the thumb was observed. Operative procedure confirmed the presumed dia...

Anatomical landmark of A1 pulley is important especially in minimal invasive surgery. The lengths and landmarks of A1 pulleys were evaluated in 510 preserved cadaver digits. The cadavers were 25 females and 26 males aged at the time of death ranged from 48 to 89 years. Measurements of A1 pulley lengths were made and used to predict the landmarks of the proximal pulley margins, which are related...

OBJECTIVE To assess the separate effects of thumb and finger extension/flexion on median nerve position and cross-sectional area. METHODS Ultrasonography was used to assess median nerve transverse position and cross-sectional area within the carpal tunnel at rest and its movement during volitional flexion of the individual digits of the hand. Both wrists of 165 normal subjects (11 men, 4 wome...

Background: One of the most important principles that govern life is inheritance of genes. There are over 200 traits that are transmitted from generation to generation in humans. When one of the two parents expresses the trait, there is 25-50% likelihood of passing it to any of the children; but if both parents have it, the probability doubles (50-100%). There are three main types of bent littl...

OBJECTIVE Know the results of percutaneous release of trigger digits by using full handle knife 15 degrees. MATERIAL AND METHOD The author identified 510 cadaveric digits to find the anatomical landmark of Al pulley that relates to the knuckle and measurements of A1 pulley lengths. The proximal margin of the Al pulleys on the perpendicular line from the knuckle to the palm was in the same lin...

There is rare studies with regard to sesamoid bone variations of the hand in addition to its prevalence and distribution. This study aims to assess both the prevalence and variation of sesamoid bones of the hand. A retrospective review of posteroanterior (PA) and oblique radiographs of 436 left and 414 right hands of 850 adult patients obtained from four hospitals was performed. All X-ray films...

This paper proposes H, an anthropomorphic prosthesis hand with 5 fingers and human hand size. It consists of the combination of direct actuated and underactuated system for a dexterous grip. The H also has modularized 2 DOF of MCP mechanism in a thumb for power grip. The adduction-abduction and antepositon-retroposition movements are generated by this structure of thumb which is the function of...

The comorbidity of 'core characteristics' and sensorimotor abnormalities in autism implies abnormalities in brain development of a general and pervasive nature and atypical organization of sensory cortex. By using magnetoencephalography, we examined the cortical response to passive tactile stimulation of the thumb and index finger of the dominant hand and lip of the individuals with autism spec...