– See: Arteries of the Upper Limb – Discussion: – branch of axillary artery; – pierces the clavipectoral fascia and gives rise to 4 branches; – clavicular – small branches that run toward sternoclavicular joint, supplying this and a little bit of the anterior thoracic wall; … Read more
– See: Vascular Problems of the Upper Extremity: – Discussion: – thoracic outlet space is created by the clavicle, first rib, subclavius muscle, costoclavicular ligament, and anterior scalene muscle; – most often affects subclavian artery, vein, and lower trunk (C8 & T1) of brachial plexus; – both the subclavian artery and the brachial plexus traverse … Read more
– Discussion: – progression: – rt thoracic curves > 50 deg are at highest risk for progression (1 deg/yr) followed by Rt lumbar curves; – single thoracic curves> 70-75 deg at growth completion progress an average of about 17 deg; – … Read more
– See Rotator cuff: – anatomy: – origin: middle half of the lateral scapular border; – insertion: inferior aspect of greater tuberosity of the humerus, capsule of shoulder joint; – action: – lateral rotation of humerus at the shoulder (responsible for 45% of power of external rotation); … Read more
– See: Abductors of the Shoulder : Origin: dorsal surface of inferior angle of the scapula on the lower 1/3 of scapular axillary border; Insertion: medial lip of bicipital groove of humerus; medial to latissimus dorsi tendon; Action: adducts and medially rotates humerus at the shoulder; extends the shoulder joint; Reversed origin insertion action: … Read more
Discussion overuse syndrome or tendinosis involving the region of the lateral humeral epicondyle; most often the origin of the ECRB displays an abnormal vascular proliferation and focal hyaline degeneration; ref: Anatomic Factors Related to the Cause of Tennis Elbow EDC may also be involved in some cases; ref: The role of the extensor digitorum communis … Read more
– Discussion: – all seven cervical vertebra and the C7-T1 junction are visualized; – Technique: – patient is supine. head is straight in the neutral position; – central beam is directed horizontally to a point 2.5 – 3.0 cm caudal to … Read more
– See: – OCS Application and Correction – Notes for Wrightlock Spinal Fixation System: Technique Overview: The typical hook placement for a Type III scoliotic curve of about 65 degrees (Figure 1) is derived from that recommended by Harrington. Normally, a six hook construct is used. Couplers are placed between the upper and middle sets … Read more
– Discussion: – over the course of several hours, half or more of the dose accumulates in bone, and the remainder is excreted in urine; – images obtained over 2-4 hours (half life of technetium is 6 hours); – increased uptake in immature bone and metabolically active bone, or … Read more
– See: Myelodysplasia: – Discussion: – syringomyelia is a condition in which tubular cavity, or syrinx, in central area of spinal cord gradually expands leading to progressive myelopathy; – it is associated w/ disturbed hydrodynamics of cervical spinal fluid w/ or w/o associated obstruction at the cranial cervical junction; … Read more