Data Trace Editor – Anatomy: – three posterior divsions of brachial plexus form posterior cord: (C5 , C6 , C7, C8, T1) – upper subscapular nerve to subscapularis – thoracodorsal to latissimus dorsi – lower subscapular nerve to subscapularis and teres major … Read more
– Discussion: – Anatomy and Function of PCL: – mechanism of injury: – fall on a flexed knee with plantar flexed ankle; – associated injuries: – ACL and collateral ligament injury (knee dislocation); – when PCL injury occurs w/ MCL … Read more
– Discussion: – dx is made when there is posterior instability on exam and a bone fragment was seen on x-ray; – MRI allows determination of the anatomy of the tear (ie femoral or tibial origin); – tibial avulsions: – tibial avulsions … Read more
– See: – Anterior Approach Shoulder – Post Approach to Humerus – Discussion: – indicated from frx of the scapula, esp when the pathology is posterior; – Technique: – positon the patient in the prone or lateral position; – skin incision is made … Read more
– See: Posterior Approach to the Humerus; – Discussion: – considered to be the most versatile approach to the elbow; – most surgeons use straight longitudinal incision, which avoids olecranon tip, by shifting the incision slightly laterally or medially; – Variations of Posterior Approach: – Transolecranon Osteotomy … Read more
– Discussion: – cervical kyphosis is a general contra-indication for posterior decompression; – Surgical Approach: – prone position using Mayfield head holder w/ neck in neutral; – during operative procedure, erector spinae muscles should not be dissected laterally beyond the facets; – this avoids … Read more
– Indications: – displaced type II dens frx; – note that if posterior C1-C2 fusion is begin considered for type II dens frx, it is important to ensure that there is not a concomitant C1 arch frx; – Anatomy: – vertebral arteries: – … Read more
– Discussion: (see TKR menu) – posterior capsular ligament has three parts; (see posterior oblique ligament) – one overlies each femoral condyle and a third, shorter section passes between them; – these three parts normally limit extension provided that the depths of the prosthetic surfaces and the cement are … Read more
– Discussion: – includes lamina, pedicles, spinous processes, including supraspinous and intraspinous ligaments, ligamentum flavum, & facet capsules; – Clay Shoveler’s fx – Ligamentous Instability: – consists of combined role of right & left Facet Joint & lateral masses in resisting compression; – ligamentous complex in posterior motion segment resists … Read more
– See: Posterior Approach for Pelvic Frx – Indications for Use: – isolated posterior wall & posterior column frxs; – allows access to posterior column and posterior wall only, but exposure is limited proximally by superior gluteal vessels and greater trochanter; – isolated transverse frx (as well … Read more