Method of measuring the amount of dislocation of cervical verteb

Details Method of measuring the amount of dislocation of cervical verteb Method of measuring the amount of dislocation of cervical verteb

1997-12-30

1999-08-31

Lateef, Marvin M.

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

382132, 382128, A61B 600

Patent

active

059446641

ABSTRACT:
A method of measuring the amount of dislocation of the cervical vertebrae of the patient includes a step of defining, on the base posterior view, an end point on a line connecting a point representing the front end of the nasal septum and a point being equidistant from a pair of ocular orbits; a step of determining, on each side of the base posterior view, a point of intersection (or contact) of the "profile of a foramen magnum of a skull" and the region where a condyle of the skull is joined to, or in close proximity to, a superior articular pit of atlas; and a step of defining, on the base posterior view, a bisector of the angle which a line connecting the front end point to one of the points of origin forms with respect to another line connecting the front end point to the other of the points of origin. The amount of dislocation of the cervical vertebrae is determined by means of the bisector. In the case of the atlas, points of foramen transversariums representing points of the substantial center of the foramen transversariums of the atlas are defined on the image of the base posterior view. The amount of dislocation of the atlas is calculated by measuring the distance between one point of foramen transversarium and the bisector and the distance between the other point of foramen transversarium and the same.

REFERENCES:
patent: 4899761 (1990-02-01), Brown et al.
patent: 5582186 (1996-12-01), Wiegard
patent: 5602935 (1997-02-01), Yoshida et al.

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