Spirometry:

A great deal can be learned about the mechanical properties of the lungs from measurements of forced maximal expiration and inspiration.  Spirometry is the term applied to the assessment of breathing.  Over the years it has become obvious that the spirometer and peak flow meter used to measure ventilatory function are as deserving of a place in the diagnostic workup as the blood pressure cuff (sphygmomanometer) for those individuals with respiratory symptoms.

It is important to appreciate that the clinical value of spirometric measurements is critically dependent on the correct operation and accuracy of the spirometer, performance of correct breathing maneuvers and use of relevant predicted normal values.

Spirometry can be used to assess neurological function, particularly the integrity of the upper part of the cervical spinal cord.  The phrenic nerve carries nerve impulses from the spinal cord to the large muscles of breathing referred to as the diaphragm which lies within he upper abdomen at the base of the lungs.  Spirometry is also used to assess the movement of the rib cage.  The rib cage must contract and expand with each breath.  Certain disease processes and pain syndromes including spine pain syndromes can restrict the excursion of the chest.

Videoflouroscopy:

Videoflouroscopy is a specialized from of X-ray used to record motion. This type of test has also been called cineradiography or dynamic motion x-ray. This procedure can be used to assess the spine when abnormal movement patterns are suspected that cannot be adequately evaluated with conventional X-ray studies.  It can be valuable detecting and recording of mechanical problems of the spine associated with surgical spinal fusion, trauma and segmental dysfunction.  Videoflouroscopy provides imaging at relatively low radiation levels as compared to CT Scan.