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A universal joint (also called a universal coupling or U-joint) is a joint or coupling connecting rigid shafts whose axes are inclined to each other. It is commonly used in shafts that transmit rotary motion .
With the encouragement of his instructor, Dean Robert H. Thurston, Spicer applied for and received a patent for a practical automotive universal joint on May 19, 1903. Thurston died on October 25, 1903, and without a mentor, Spicer decided to leave Cornell during his last semester of school and start the manufacture of his universal joint ...
Principle I: When the spine is in neutral, sidebending to one side will be accompanied by horizontal rotation to the opposite side. [2] This law is observed in type I somatic dysfunction, where more than one vertebra is out of alignment and cannot be returned to neutral by flexion or extension of the vertebrae. The involved group of vertebrae ...
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A functional spinal unit (FSU), or motion segment, is the smallest physiological motion unit of the spine to exhibit biomechanical [1] characteristics similar to those of the entire spine. [2] A FSU consists of two adjacent vertebrae, the intervertebral disc and all adjoining ligaments between them and excludes other connecting tissues such as ...
A new opioid-free pain medication was approved by the U.S. Food and Drug Administration (FDA) on Thursday, marking a non-addictive alternative for patients. Journavx (suzetrigine), made by Vertex ...
The Bad Ragaz Ring Method (BRRM) is a type of aquatic therapy used for physical rehabilitation based on proprioceptive neuromuscular facilitation (PNF).BRRM is a water-based technique in which therapist-assisted strengthening and mobilizing exercises are performed while the patient lies horizontally in the water, with support provided by rings or floats around the neck, arms, pelvis, and legs.
They allow for flexion and extension and limit lateral flexion in the cervical spine. Pathological processes that can occur in these joints include degenerative changes or hypertrophic arthritis, resulting in foraminal stenosis and nerve compression. Foraminal stenosis at this joint is the most common cause of cervical nerve root pressure.