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Animation of a cycloidal drive. A cycloidal drive or cycloidal speed reducer is a mechanism for reducing the speed of an input shaft by a certain ratio. Cycloidal speed reducers are capable of relatively high ratios in compact sizes with very low backlash. [1] The input shaft drives an eccentric bearing that in turn drives the cycloidal disc in ...
PPIVM assessments test the movement available at a specific spinal level through the application of a passive physiological movement. [ 1 ] [ 2 ] Cervical PPIVMs can be performed in cervical lateral flexion or rotation, with the therapist restricting movement beyond a certain cervical level by blocking with the hand; this allows the ...
Harmonic Drive SE strain wave gear set consisting of wave generator bearing (top left), flexspline cup (top right) and circular spline ring (bottom). Strain wave gearing (also known as harmonic gearing ) is a type of mechanical gear system that uses a flexible spline with external teeth, which is deformed by a rotating elliptical plug to engage ...
Nabtesco (ナブテスコ株式会社, Nabutesuko Kabushiki-gaisha) is a Japanese engineering company that specializes in gearboxes, rotors, motors and robotics. History [ edit ]
There are many recognized spinal diseases, some more common than others. Spinal disease also includes cervical spine diseases, which are diseases in the vertebrae of the neck. A lot of flexibility exists within the cervical spine and because of that, it is common for an individual to damage that area, especially over a long period of time.
In 1977, Dyck and Doyle reported on the bicycle test, a simple procedure in which the patient is asked to pedal on a stationary bicycle. If the symptoms are caused by peripheral artery disease , the patient will experience claudication, a sensation of not getting enough blood to the legs; if the symptoms are caused by lumbar stenosis, symptoms ...
The most significant impact of magnetic resonance neurography is on the evaluation of the large proximal nerve elements such as the brachial plexus (the nerves between the cervical spine and the underarm that innervate shoulder, arm and hand), [9] the lumbosacral plexus (nerves between the lumbosacral spine and legs), the sciatic nerve in the pelvis, [10] as well as other nerves such as the ...
However, because the severity of symptoms does not correlate well with the degree of stenosis and nerve root compression, a clear understanding of the specific pathogenesis remains challenging. [ 7 ] It is currently unknown which exact cellular mechanisms within the body causes the pain of NC as a response to the compression of spinal nerves.