Zero Rotation Views
– Discussion: – used to show ulnar variance; – technique: – shoulder is abducted 90 deg, the elbow flexed 90 deg, and forearm is held in neutral rotation; – AP View: – patient places the forearm flat on … Read more
– Discussion: – used to show ulnar variance; – technique: – shoulder is abducted 90 deg, the elbow flexed 90 deg, and forearm is held in neutral rotation; – AP View: – patient places the forearm flat on … Read more
– See: – FDP Avulsion – FDP Lacerations – tendon pull thru technique – Anatomy: – in zone 1, FDP has emerged from between & beneath decussating FDS and travels to its insertion in the distal phalanx; – zone 1 contains: A4, C3, … Read more
– See: Zyvox Commercial Web Site – Discussion: – for MRSA and staph epi infections; – dose: 600 mg PO bid; – in standard dosing, the plasma and tissue levels will be between 10-11 mcg/ml (about 4 mcg/ml in bone); – mao inhibitors – linezolid is a reversible, nonselective inhibitor of monoamine oxidase; – linezolid … Read more
– Discussion: – used for rigid or mobile lumbar or thoracolumbar Scoliosis with lordosis Posterior transpedicular Zielke instrumentation of the lumbar spine. Anterior Zielke instrumentation for spinal deformity in adults.
– Discussion: – used to better visualized the acromio-clavicular joint by eliminating overlying structures; – Technique: – AP view w/ beam is directed at the a-c joint with 10 deg cephalic tilt; – use 1/3 to 1/2 the voltage used for the AP shoulder view (soft tissue technique)
– Discussion: – slope of “stress/strain” curve (below yield point) denotes material’s stiffness; – steeper the curve, the stiffer material, gradient is known as modulus of elasticity or Young’s modulus; – in the elastic range of the stress strain curve it is the slope
– See: – PreOp Planning: – TKR Menu – Lateral View: – note if AP size of lateral femoral condyle > medial condyle; – w/ large discrepancy of small degree of Internal Rotation may be necessary to prevent undercutting anterior cortex; – careful preoperative planning, using templates & … Read more
– Discussion: – w/ Young-Burgess system, stability or lack of stability can be judged fracture pattern, direction of the force of injury, and by knowledge of pelvic ligamentous anatomy; – in Lateral Compression frx, force of injury is from side & is assoc w/ horizontally oriented pubic frx; – Lateral Compression Classification: … Read more
– Discussion: – stress beyond the elastic limit that results in permanent bending, deflection, or deformation (i.e., the metal goes from pure elastic behavior to a combination of elastic/plastic elongation); – metals ranked according to yeild strength (highest to lowest); – cast cobalt chrome > titanium > wrought cobalt chrome, stainless … Read more