– See: PIN – Inciting causes: – radiocapitellar joint ganglions and synovitis – congenital tightness of ligamentous arcade of Frohse; – include poorly placed screws for fracture fixation – PIN is vulnerable during ORIF of proximal radius; – in 25% … Read more
– See: Autograft Discussion – PreOp Planning: – if patient has undergone previous bone graft harvests, consider CT scan to determine amount of remaining bone left in the crest; – Technique: – ensure that appropriately sized self retaining retractors are available; – straight longitudinal incision is made over posterior superior … Read more
Discussion: – the hyperextension phase of throwing may be the most important component of internal impingement; – in the late cocking position (abduction, external rotation, extension) may cause the postero-superior edge of the glenoid labrum to become caught between the humeral head and rotator cuff (surface of the infraspinatus and posterior fibers of supraspinatus tendon); – … Read more
– Anatomy: – this nerve is deep motor branch of radial nerve & supplies all of extrinsic wrist extensors except for the ECRL; – radial nerve enters the anterior compartment of the arm lying deeply between brachialis medially & BR & ECRL laterally; – PIN passes thru supinator muscle in its course from anterior to … Read more
Discussion trimalleolar fractures involve frx of the medial and lateral malleoli along w/ a frx of the posterior lip of tibial plafond; frx fragment results from avulsion by the posterior tibiofibular ligament at its site of attachment to the tibia; clinical results triamalleolar frxs are generally worse w/ larger fragments involving a larger portion of … Read more
– See: Crankshaft Phenomenon: – Progressive Congenital Scoliosis: – fundemental procedure for congenital scoliosis is posterior spine fusion w/o instrumentation; – in young children correction of congenital scoliosis w/ instrumentation carries a higher risk of neurologic injury; – in older children w/ congenital scoliosis, instrumentation & correction of deformity … Read more
– Discussion: – posterior horn of the medial meniscus is difficult structure to view w/ arthroscope, esp in very tight joints with little valgus laxity; – Positioning: Valgus Stress to the Slightly Flexed Knee: – valgus stress applied to slightly flexed knee (no > 10 deg) combined w/ external rotation of tibia … Read more
– Discussion: – branch of the Axillary Artery – largery than AHCA. – passes around the posterior astpect of the surgical neck of the humerus with the Axillary nerve (thru quadrangular space ); – runs w/ the nerve around the humerus under the Deltoid muscle Anatomy of … Read more
– See: Posterior Cruciate Ligament: – Discussion: – unlike the ACL, the PCL does have a capacity to heal; – references: – Chronically injured posterior cruciate ligament: Magnetic resonance imaging. – Magnetic resonance imaging of posterior cruciate ligament injuries: assessment of healing. – The natural history of … Read more
– Femoral Tunnel: – goal is to re-create the large anterolateral band of the PCL, which tightens in flexion; – see anatomy of PCL – cortical entry site: – small skin incision is made w/in Langer’s lines, which overlies the vastus medialis oblique insertion into … Read more