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Midterm Exam
Skel Rad 2
| Question | Answer |
|---|---|
| Ossification center of Dens doesn't fuse with body of the Dens | Ossiculum Terminale Persistens |
| So mites fail to segment resulting in fusion of vertebrae | Block Vertebrae |
| Lack of union between Odontoid and body of C2 | Os Odontoideum |
| Partial to complete lack of Odontoid Process | Hypoplastic and Agenetic Odontoid Process |
| Short, webbed neck, low hairline, reduced ROM | Kippel-Feil Syndrome |
| Failure of Scapula to descend | Sprengel's Deformity |
| Cartilage or fiber band running from C5/6 SP to Superior Angle of Scapula | Omovertebral Bone |
| Two nerve roots exit from one large Foramen | Absent Pedicle |
| Results from a cleft in the posterior arch | Cervical Spondylolisthesis |
| Developmental narrowing of spinal space due to elongated, flat vertebral bodies | Platyspondyly |
| Costal process articulating with C7 | Cervical Rib |
| Often leads to Dysphagia, feeling of fullness in throat, face pain | Stylohyoid Ligament Ossification |
| Associated with a rudimentary form of congenital non-segmentation | Elongated Anterior Tubercle with Accessory Joint |
| Saggital cleft in a vertebral body | Butterfly Vertebra |
| Portion of vertebra does not ossify, triangular shaped segmentation | Hemivertebra |
| Endplates of adjacent vertebra alter and conform to Hemivertebra | Incarcerated Hemivertebra |
| Hemivertiebra is fused to the adjacent segment without an intervertebral disc | Non-segmented Hemivertebra |
| Adjacent endplates are straight and will more likely cause Scoliosis | Non-incarcerated Hemivertebra |
| Fibrous, cartilagenous, or bony bar divides the spinal cord or Cauda Equina and fixes it to the midline | Diastematomyelia |
| Herniation of disc material into vertebral body | Schmorl's Nodes |
| Persistent Notochord, Cupid's bow (look like Schmorl's Nodes) | Nuclear Impression |
| Neural Arch does not ossify and pedicle is absent or semi-absent | Agenesis of Lumbar Pedicle |
| Multiple levels of Schmorl's Nodes with anterior vertebral body wedging | Scheuermann's Disease |
| Non-union between the two halves of the Post Arch | Spina Bifida Occulta |
| Wide, bony defect in Post Arch with protrusion of spinal cord contents | Spina Bifida Vera |
| Disc material herniation through Growth Center of the Ring Apophysis | Limbus Bone |
| Vertebra with lumbar and sacral characteristics | Lumbosacral Transitional Vertebra |
| Appearance of Lumbar vertebra on one side and Sacral base on the other | Unilateral Transitional Segment |
| Assymetrical facets | Facet Tropism |
| Lack of an Articular Process | Agenesis of Articular Process |
| Secondary growth centers of the Articular process do not unite | Oppenheimer's Ossicle |
| Combination of Spina Bifida Occulta of the S1 and elongated SP of L1 | Clasp Knife Syndrome |
| Hahn's Cleft | |
| Flattening of the Base of Skull | Platybasia |
| Upper Cervicals in a superior position when related to the Skull | Basilar Impression |
| Ow lying Cerebellar Tonsils, triangular shaped Cerebellar Tonsils, kinked 4th Ventricle | Arnold-Chiari Malformation |
| Congenital Atlanto-occipital fusion | Occipitalization of the Atlas |
| Inferior somite of the Occiput fails to unite and remains as an extra ossicle | Occipital Vertebra |
| Bridge from Anterior Foramen Magnum to apex of the Odontoid Process/Ant Arch | Third Condyle |
| Congenital, bony bar bridge C1 TP to the Occiput | Epitransverse Process |
| Congenital, bony bar bridge originates medial and anterior to the Paramastoid Process And connects to atlas TP | Paracondylar Process |
| Congenital, bony bar bridge originates from the Jugular Process of the Occiput to atlas TP | Paramastoid Process |
| Bony ossicles in the Atlanto-occipital space | Atlanto-Occipital Ossicles |
| Posterior arch cleft, unilateral agenesis, or complete agenesis of Post Arch | Agenesis of Posterior Arch of Atlas |
| No midline ossification of Neural Arch of C1 | Posterior Spina Bifida Occulta of Atlas |
| Vertical lucency over Odontoid Process on APOM View | Anterior Spina Bifida Occulta of Atlas |
| Oblique ossification of Atlanto-occipital membrane | Pont Ponticle of Atlas |