By Prof. Dr. Jean-Francois Bonneville, Dr. Francoise Cattin (auth.)
The 1st exam of the cervical backbone is often made utilizing general radiographs and, frequently sufficient, this suffices as a foundation for prognosis. Malformations, tumours, and extra often traumas, rheumatism, or even traditional neck soreness require radiological exam of the backbone. Interpretation, besides the fact that, is tough. Take a cervical vertebra on your hand and you'll see that it really is advanced sufficient itself. In radiology the overlapping items of bone, summation phenomena and the variety of viewing angles complicate interpretation of the photographs nonetheless additional. The booklet by way of J.-F. Bonneville and F. Cattin indicates an unique approach to analyzing the radiographs, strict yet very appealing, which significantly simplifies the translation of pictures of the cervical backbone. This ebook indicates that - or threedimensional computed tomograms accompany ordinary radiographs as a very good reduction to comprehension. it's as if the reader had entry to every a part of the bony anatomy proven within the radiographs and from then on every little thing turns into effortless, superimpositions disappear, traps come into sight, anatomy triumphs, the picture lives.
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Additional info for Cervical Spine: Tricks and Traps: 60 Radiological Exercises for Students and Practitioners
Harris's ring is not a true ring but only an image corresponding to the projection of the insertion of the C2 articular processes in the lateral view. The superior pole of Harris's ring corresponds to the base of the odontoid process. Harris's ring is destroyed in C2 fractures extending below the base of the odontoid process. The visualisation of Harris's ring is not at all uniform; it depends on the form of the C2 articular processes and on the orientation of the X-ray beam. 41 21 a b 42 21 Case 21 Posterior interapophyseal degenerative changes, degenerative changes of the uncinate process with narrowing of the left C6-C7 intervertebral foramen, huge anterior osteophytes (a) ...
The visualisation of Harris's ring is not at all uniform; it depends on the form of the C2 articular processes and on the orientation of the X-ray beam. 41 21 a b 42 21 Case 21 Posterior interapophyseal degenerative changes, degenerative changes of the uncinate process with narrowing of the left C6-C7 intervertebral foramen, huge anterior osteophytes (a) ... , but what is really a cause for concern is a large lacuna at C5: what is your diagnosis? It must be noted that this lacuna at C5 is only visualised in one of the two images.
Which one? The correct response is b: this image is typical of the insertion tubercle of the semispinalis capitis: this extensor muscle of the head maintains the equilibrium of the head and also plays a role in the rotation of the head. This anatomical variant has to be distinguished from an osseous spur which is often present in cases of posterior inter apophyseal degenerative changes (a and e). c There is a fracture of the articular mass with displacement of the inferior articular process which is projected onto the safety space.