– See: – Cross Table Lateral – Spondylosis – Discussion: – risk of spinal cord injury with damage to cervical vertebrae is greater in individuals who have narrow spinal-canal diameters; – narrow mid-sagittal spinal-canal diameter increases risk of severe neurological injury from spinal frx or … Read more
– See: Burst Frx: – Discussion: – this fracture involves loss of vertebral body height anteriorly; – posterior wall remains intact, & upper vertebra rotates downward about two facet joints; – posterior ligaments become taut when anterior ht loss is approx 25%; – compression of > 50% with … Read more
– See: Fracture Dislocations of the Spine: Flexion Distraction Injuries: – Discussion: – Chance frx & posterior ligament rupture (variant of flexion distraction injury pattern) maypresent w/ minor anterior vertebral compression; – in Chance frx, the anterior column fails in tension (along w/ the middle … Read more
– Management of the Spine Injured Patient: – Physical Exam of the Cervical Spine: – Radiology of the Cervical Spine: (Clearance of the CSpine in Trauma Patients) – Spine Menu: – Anesthesia in the Spinal Cord Injured Patient: – AP … Read more
– See: – Radiographic Changes of Cervical Spine in JRA: – Rheumatoid Arthritis: – Transverse Ligament Rupture: – Discussion: – cerival spine involvement is common in RA (up to 90%) & is more common w/ long standing disease and multiple joint involvement; … Read more
– Discussion: – pattern of hip deformity in cerebral palsy depends on type and extent of neurologic impairment; – non progressive neuromuscular disorder w/ onset before 2 yr resulting from injury to the immature brain; – etiology includes: perinatal infections (TORCH), prematurity (most common), anoxic injuries, … Read more
– Discussion: – central stenosis produces compression of the thecal sac in contrast to lateral stenosis which involves compression of individual nerve roots; – may be congenital (idiopathic or developmental in achondroplastic dwarfs) or acquired; – acquired stenosis: – due to degenerative hypertrophic facets … Read more
– Discussion: – most common incomplete cord lesion – frequently associated w/ extension injury to osteoarthritic spine (cervical spondylosis) in middle aged person who sustains hyperextension injury; – cord is injured in central gray matter, & results in proportionally greater loss of motor function to upper extremities than lower extremities w/ variable sensory sparing; – Anatomy: – fibers responsible … Read more
– See: Addition of Antibiotics to Cement – Discussion: – full discussion of technique for cementing femoral stems – mixing under vacuum reduces retained air & incr cement strength; – typically 2 bags are needed; – slower mixing of cement over a shorter time decreases air voids within cement and … Read more
– Discussion: – once femoral and acetabular components have been removed, residual cement can be removed from the femoral canal; – it is better to move onto to the acetabular revision prior to cement removal since the cement will prevent blood loss from the canal; – … Read more