PURPOSE Metacarpal fractures are common in hand surgery. Metacarpal shortening ranging from 2 mm to as much as 10 mm has been deemed acceptable in the literature. We examined the effect of metacarpal shortening on interosseous muscle architecture and predicted force production capacity based on the standard muscle length-tension curve (commonly known as the Blix curve). METHODS The dorsal int...

A 58-year-old gentleman presented with gradually progressive left hand weakness for one year. Left leg dragging and dysarthria developed 3months before visiting our neurology clinics. Neurological examination revealed muscle atrophy without fasciculation in the left first dorsal interosseous and triceps brachii muscles. Left spastic hemiparesis with exaggerated jaw jerk and flaccid dysarthria w...

Single fibre EMG has been used to study the pattern of upper limb motor involvement in syringomyelia. Biceps brachii, extensor digitorum communis (EDC) and first dorsal interosseous muscles (1stDI) representing C5/6, C7/8 and C8/T1 segments, were studied. In the biceps the fibre density was slightly increased in most patients, in EDC it was about twice the normal and in the 1stDI it was about t...

BACKGROUND: There is little information about blood supply of the carpal joint in one- humped camel, while there is extensive data about cow and equine species. In order to perform surgeries and diagnostic techniques in carpal region, information about the elements of the joint such as its arteries is necessary. OBJECTIVES: This study aims at describing the origins, arrangements, and branches o...

Pain or numbness in the neck, upper extremity, low back and/or leg is not infrequently caused by non-spinal conditions, which may be misdiagnosed as a wide variety of diseases: myelopathy, radiculopathy, discopathy, spondyloarthropathy or entrapment neuropathy. K Point syndrome is a symptom combination characterized by positive tenderness at K Point, which is located at the cranial musculotendi...

The proton transverse relaxation time (T2) of human skeletal muscles has been increasingly used in magnetic resonance imaging experiments to examine muscle physiology and neuromuscular control. However, little attention has been paid to the experimental factors affecting the accuracy or sensitivity of the T2 measurement. We have explored theoretically and experimentally the structure of several...

The adductor pollicis muscle was studied in fifty hands of Japanese adult cadavers of both sexes. The radial portion of the oblique head of the adductor pollicis muscle has carpal and metacarpal origins and an insertion into the wing tendon of the extensor apparatus. This portion was located dorsal to the palmar metacarpophalangeal articular nerve and superficial palmar metacarpal artery. Thus,...