– Discussion: – highest percentage of missed injuries occur in this region; – Exam: – Torticollis: – Radiographs: – Atlanto-occipital Disassociation – C1-C2 interspinous space should not be greater than 10 mm; – occipital condyles should articulate w/ lateral … Read more
– See: Pillar View – Discussion: – demonstrates primarily neural foramina, pedicles, articular masses, apophyseal joints, & relative relationship at lamina; – oblique views show the pedicle in profile, and also allows assesment of the intervertebral foramina (and osteophytes encroaching along their margins); – Technique: – routine oblique … Read more
– origin: the apex of the spine process of the axis; – insertion: the inferior and dorsal part of the transverse process of the atlas; – action: rotates the atlas, turning the face toward the same side; – nerve supply: a branch of the dorsal primary division of the suboccipital nerve; – synergists: Longissimus Capitis, Rectus Capitis Posterior … Read more
– origin: the superior surface of the transverse process of the atlas; – insertion: the occipital bone, between the superior and inferior nuchal lines, lateral of the Semispinalis capitis ; – action: extension and lateral flexion of the head at the neck; – nerve supply: branch of the dorsal primary division of the suboccipital nerve; … Read more
– See: – Erb’s Palsy – Lower Root Injury: (Klumpke) – Shoulder in brachial plexus injuries: – Traumatic Brachial Plexus Palsy in Children – Discussion: – incidence of brachial plexus birth palsy is approx two / 1,000 births; – … Read more
1) Because WRIGHTLOCK rods have a smaller diameter than other systems, the rods will seem flexible. However, a fully assembled WRIGHTLOCK construct will create rigidity comparable to a large rod system. The OCS instrumentation helps ensure a maximum correction by allowing the surgeon to plan the strains in the rods. With a large rod system, … Read more
– Discussion: – nucleus pulposus consists of a network of delicate collagenous fibers in a mucoprotein gel rich in polysaccharide; – contains type II collagen; – nucleus has a high water content, apparently the result of imbibition by the gel; – it functions to resist compressive loads; … Read more
– Discussion: – various stages of Fusion of the the basiocciput may be seen; – ranging from partial fusion, either anterior or posterior, to complete occipitalatlantal fusion; – atlantal-axial fusion anomalies are seen w/ equal frequency; – aplasia / Hypoplasia may involve any portion of the ring of … Read more
– Discussion: – most crucial measurement is degree of continuity of posterior facet, which is best determined by CT scan; – all frx are initially treated by strict bed rest, elevation, until acute swelling has subsided; – nondisplaced frx w/ mild or moderate decrease in Bohler’s < are initially … Read more
– See: Neuro Exam – Discussion: – mechanism of injury: – direct neural injury from sacral frx; – indirect neural injury from traction accompanying pelvic displacement; – injury to lumbrosacral plexus is most common w/ L-5 & S-1 roots being at greatest … Read more