– See: Radiology of the Acetabulum – Discussion: – instability = cephalic displacement of posterior sacroiliac complex of at least 5-15 mm on inlet and outlet views; – look for gap (rather than impaction) posteriorly, & frx of 5th lumbar transverse process or avulsion of sacrospinous ligament; – Pertinent Radiographs: – AP … Read more
– Lateral View: – key element is whether there is anterolithesis, since this will dramatically narrow the SAC w/ any degree of rotation; – ADI: – it may be difficult to measure the ADI due to lateral mass rotation; – in children … Read more
– MRI of Shoulder – 30 deg Caudal Tilt AP View – Acromioclavicular Joint Stresses Views – Axillary View – AP of the Shoulder – Arthrography: – Garth View (Apical Oblique) – Lateral: of Shoulder – Scapular Outlet View – Serendipity View – Stryker … Read more
– See: Radiology of Hip – Pre Reduction Evaluation: – frx-dislocation usually confirmed by a single AP x-ray; – rule out: assoc acetabular, femoral head, or femoral neck frx; – these must be recognized prior to reduction; – femoral head: for assoc frx; … Read more
– Discussion: – may occur from frx (Galeazzi fracture or Colles frx), from radial head frx (as a part of an Essex Lopresti injury) or as an islated injury; – injury to the TFCC is a necessary part of this injury; – dorsal subluxation: … Read more
– Discussion: – indicated for comminuted radial head frx which occur w/ concomitant MCL injury, dislocation, or RU joint disruption (Essex Lopresti Fracture); – will serve as spacer & will prevents proximal migration of radius; – w/ RU joint disruption, radial head spacer alone does not restore satisfactory axial stability w/o pinning the distal radioulnar … Read more
– See: – Adult Radial Neck Frx / Pediatric Radial Head Frx – Discussion: – radial head frx is most common type of elbow fracture in adults; – frx of the radial head occurs primarily in adults, whereas fractures of the radial neck are more common in children; – frx of the radial head and … Read more
– See: Cardiac Contussion: – primary complication is comprimised oxygenation; – due to intersitial hemorrhage with alveolar collapse and alveolar flooding – shunting, results in hypoxia that is relatively refractory to enhanced inspiratory oxygen concentration; – pulmonary contusions are usually quite localized; – Management: – PEEP and continuous positive airway pressure – over-agressive diuresis or … Read more
– Discussion: – pediatric pseudosubluxation refers to normal mobility of C-2 on C-3 in flexion which may be so pronounced as to be mistaken for pathologic motion; (is normal in children < 8 years old); – prevalence: … Read more
– Discussion: – coverts a complex link joint to a simple hinge by creating a radiocarpal articulation; – motion between the radius and capitate is both translational and rotational, which has the effect of dissipating forces on the radius; – expect 60-80% of contralateral motion (w/ about an 80% flexion-extension arc); – expect preservation of … Read more