Ortho Preferred Malpractice Insurance

Annular Tear

– Discussion: – lesion labeled annuular tear or internal disruption is based on concept of leaking disc, one which permits the irritating liquid material       normally restricted to the center of the disc to come into contact with the innervated tissue; – annular tissue that permits egress of this liquid has a poor capacity for healing; – at most, … Read more

Annulus fibrosus

– See: Annular Tear: – Discussion:     – anulus fibrosus makes up peripheral portion of disk structure;     – composed of fibrocartilage and type I collagen;     – fibers of anulus run obliquely between vertebrae and are arranged primarily in concentric layers;           – direction of the fibers … Read more

Anconeus

  origin: posterior surface of lateral epicondyle of humerus; insertion: lateral side of olecranon process and posterior surface of proximal portion of ulna; action: extension and pronation of the forearm at the elbow; nerve supply: radial, C5, C6; synergist: triceps brachii The aconeus muscle flap: its anatomy and clinical application.

Aneurysms of the Upper Extremity

– Discussion:     – pulsatile, tender mass     – vasospastic symptoms (burns’s)     – digit ischemia and/or gangrene     – embolic showers from mural thrombi     – adjacent nerve compression     – may be erythematous and mimic an abscess     – systolic bruit or thrill – Exam:     – allen’s test may be positive if … Read more

Anatomy of Rotator Cuff

      – See: Rotator Cuff Tear – Discussion:     – see abductors of the shoulder;     – common tendon covering top, front, & back of humeral head;     – 4 muscles fuse to form this tendon: (subscapularis, supraspinatus,, infraspinatus, teres minor;)     – supraspinatus           – lies … Read more

Anatomy of Sacrum

– Discussion:     – upper end of sacrum, base of triangle, is directed forward & upward;     – in middle is upper surface of body of the first sacral vertebra;     – its anterior border forms the sacral promontory.     – it is concave & fairly smooth on its pelvic surface, … Read more