Ortho Oracle - orthopaedic operative atlas

Arava / Leflunomide

Discussion used to retard the progression of rheumatoid arthritis; may substitute for methotrexate or sulfasalazine; liver enzymes should be monitored during treatment; loading dose: 100 mg PO qd for 3 days followed by maintenance dose of 20 mg PO qd; this medication can be given to patients recieving non steroidals and/or steroids

Arachidonic Acid

– Discussion:  – rate limiting step in prostaglandin and Thromboxane A2 biosynthesis is liberation of arachidonic acid from phospholipids, making free       fatty acid available for metabolism by cyclooxygenase;  – Prostacyclin and Thromboxane are formed from arachidonic acid

Approach to Thoracolumbar Spine

– Positioning:  – foley and appropriate IV access established;  – place patient into left lateral decubitus position (L side up)  – break table in the middle;  – Incision and Exposure:  – incision is made along 10th rib which then curves along anterior abdomen as appropriate (based on size of patient);  – 10th rib is identified, … Read more

Approach to Distal 1/3 of Radius through an Anterolateral Incision

– See:     – Plating Techniques – Technique:     – incision begins in front of radial styloid process, extending proximally in straight line along anteromedial border of the brachioradialis;     – brachioradialis is reflected laterally to expose superficial radial nerve in proximal portion;            – avoid injury this nerve as … Read more

Application of Hex Nut Compression

– Discussion:     – in most cases, antegrade screw insertion across the fracture site, will result in fracture site compression;     – once the medial threads have passed the fracture site, fracture compression usually takes place;     – remove one of the two hexagonal nuts, and then advance the remaining screw up … Read more

APC III

– Discusison:     – w/ application of severe AP force, hemipelvis rotates externally until posterior iliac wing contacts posteior sacrum;     – continued force rips posterior SI ligaments, completely dissconecting hemipelvis from the sacrum;     – APC III have highest rate of assoc injury, including retroperitoneal bleeding;     – by definition then, an … Read more

APC II

– Discussion:     – involves tearing of both anterior SI ligaments of floor of pelvis (sacrotuberous and sacrospinous);     – involves a widened anterior SI joint  & injury to anterior ring (usually a symphysis diastasis) best seen on the Inlet view;     – may be bilateral or unilateral;     – this … Read more

APC-I

– Discussion:     – anterior SI ligaments are stretched;     – radiographs show slight (< 2 cm) widening of the pubic symphysis and often imperceptable widening of the SI joint;     – results from low energy forces Surgeon Variability in the Treatment of Pelvic Ring Injuries Stress radiograph to detect true extent of … Read more

AP View of the Wrist

– See: – PA View – Radial Inclination – Discussion: – AP has the dorsum of the hand touching the film, with the x-ray beam passing palmar to dorsal, whereas in a PA film, the palmar surface lies flat on the film and the x-ray beam passes from the dorsal to palmar surface; – palmar … Read more