Anatomical vascular variations are rare causes of carpal tunnel syndrome. An aberrant medial artery is the most common vascular variation, while an aberrant radial artery causing carpal tunnel syndrome is even more rare, with an incidence ranging less than 3%. This article reports a patient with compression of the median nerve at the carpal tunnel by an aberrant superficial branch of the radi...

PURPOSE Radial tunnel syndrome refers to pain on the lateral aspect of the forearm as a result of compression of the posterior interosseous nerve within a tunnel with specific anatomical boundaries. Diagnosis of the condition is difficult because of its close association with lateral epicondylitis, which warrants different methods of treatment. Based on a cadaveric study, a new clinical test, t...

Diagnosis The classic history is of the patient who begins his or her symptoms by awakening at night with numbness and pain in the median nerve distribution of his or her hand(s). This progresses to daytime symptoms that are often aggravated by activities.1,2 The occurrence of “dropping objects” in carpal tunnel syndrome patients is an index of elevated disease severity.3 Carpal tunnel symptoms...

Diagnosis The classic history is of the patient who begins his or her symptoms by awakening at night with numbness and pain in the median nerve distribution of his or her hand(s). This progresses to daytime symptoms that are often aggravated by activities.1,2 The occurrence of “dropping objects” in carpal tunnel syndrome patients is an index of elevated disease severity.3 Carpal tunnel symptoms...

The benchmark active controls technology and wind tunnel test program at NASA Langley Research Center was started with the objective to investigate the nonlinear, unsteady aerodynamics and active flutter suppression of wings in transonic flow. The paper will present the flutter suppression control law design process, numerical nonlinear simulation and wind tunnel test results for the NACA 0012 ...

Full-scale/model test comparison studies to validate the traditional atmospheric boundary layer (ABL) wind tunnel simulation technique are reviewed. According to the literature review, notable discrepancies between full-scale measurement results and model test results were observed by most performed comparison studies, but the causes of the observed discrepancies were not revealed in a scientif...

The e ect of initial nonequilibrium dissociated air constituents on the combustion of hydrogen in highspeed ows for a simulated Mach 17 ight condition was investigated by analyzing the results of comparative combustion experiments performed in a re ected shock tunnel test gas and in a shock expansion tunnel test gas. The results were analyzed and interpreted with a one-dimensional quasi-three-s...

Centrospazio has recently developed a small archeated wind tunnel (High Enthalpy Arc-heated Tunnel, HEAT) whose flexible configuration is particularly suited for cost-effective experimentation and research on a wide variety of aerothermodynamic phenomena occurring in high speed flows. The design and operation of the HEAT has involved a number of critical aspects, ranging from the feasibility an...

The treatment of nerve disorders of the upper extremity has become a highly specialized area. There has been an evolution in the electrodiagnostic approach for evaluating patients with these disorders. Portable automated nerve conduction testing systems are becoming popular for limited nerve conduction testing in the office. Differential latency testing can aid in the diagnosis of dynamic nerve...

High speed wind tunnels are widely used in the study of fluid flow behavior around various objects. The air flow in the starting step of supersonic wind tunnels is transient including strong shock waves caused by the interaction of the tunnel main stream and the boundary layer at walls. To arrive in running step, the tunnel must be designed so as these waves leave immediately the test section. ...