A rigorous description of the magnitude and direction of the 3D force vector each thumb muscle produces at the thumb-tip is necessary to understand the biomechanical consequences to pinch of a variety of paralyses and surgical procedures (such as tendon transfers). In this study, we characterized the 3D force vector each muscle produces at the thumb-tip, and investigated if these thumb-tip forc...

QUESTION What is the lifetime and current prevalence of thumb problems in Australian physiotherapists and what are the factors associated with thumb problems? DESIGN Survey of a random cross-section of physiotherapists. PARTICIPANTS 1562(approximately 10% of the total) registered Australian physiotherapists. OUTCOME MEASURES General questions covered demographic information, area of pract...

38 Objective: The purpose of this study was to investigate altered finger-thumb coupling in 39 individuals with chronic hemiparesis post-stroke. 40 Methods: First, an external device stretched finger flexor muscles by passively rotating the 41 metacarpophalangeal (MCP) joints. Subjects then performed isometric finger or thumb force 42 generation. Forces/torques and electromyographic (EMG) signa...

BACKGROUND Tracheal hypoplasia is a congenital condition described in mainly brachycephalic breeds and is one component of the brachycephalic obstructive airway syndrome (BOAS). Two radiographic methods have been described to evaluate the dimensions of the tracheal diameter in dogs and to distinguish between hypoplastic and non-hypoplastic tracheas: the tracheal lumen diameter to thoracic inlet...

Amelogenesis imperfecta (AI) remains a poorly understood group of hereditary enamel defects characterized by a wide array of clinical presentations. Although numerous reports have described the histological features of AI, knowledge concerning the biochemical composition of the affected enamel remains minimal. The purpose of this investigation was to examine the protein of smooth hypoplastic AI...

This case report presents a case of Fanconi's Anemia with an unusual thumb polydactyly in a 2-year-old boy. The extra thumb had no nail, nail bed and distal phalanx. The extra thumb had no active motion. The duplication of the thumb occurred at the carpometacarpal joint but its morphology did not match with any classification described for thumb polydactyly. Although his thumb polydactyly was a...

Hypoplastic left heart syndrome is a congenital disease which accounts for 8% of all defects. Twin pregnancies have significantly higher risk structural than singleton ones, however the concordance rate has been found to be relatively low, even in monochorionic pregnancies. We describe here favorable evolution monochorionic, diamniotic, twin pregnancy both fetuses were diagnosed with hypoplasti...

A higher frequency of hypoplastic vertebral artery (VA) in patients with migraine with aura than in normal controls has been documented. However, the role of a hypoplastic VA in a migraine attack remains unclear. The aim of our work was to measure the net VA flow volume and related spectral parameters in patients with migraine with aura and a hypoplastic VA. From January 2005 to October 2005 we...

The purpose of this study was to investigate altered finger-thumb coupling in individuals with chronic hemiparesis poststroke. First, an external device stretched finger flexor muscles by passively rotating the metacarpophalangeal (MCP) joints. Subjects then performed isometric finger or thumb force generation. Forces/torques and electromyographic signals were recorded for both the thumb and fi...