– Discussion: – most common type seen in children & young adults; – occurs in about 5% of the population; – more common in Eskimos; – more common in yound white males involved in hyperextension activities; – most common … Read more
– See: – Dorsal Interossei – Lumbricals: – Palmar Interossei – Hypothenar Eminence: – muscles of hypothenar eminence are abductor, flexor, opponens digiti minimi, & palmaris brevis; – muscles of hypothenar eminence are innervated by ulnar nerve; – Thenar Eminence: … Read more
– Discussion: – claw hand deformity is manifested by flattening of the transverse metacarpal arch and longitudinal arches, with hyperextension of MCP joints and flexion of the PIP and DIP joints; – deformity is produced by imbalance of the intrinsic & extrinsics; … Read more
– Discussion: – as with all femur fractures be sure that a femoral neck fracture is not present; – Operative Technique: – position: – supine with several folded sheets placed underneath the injured thigh and knee; – the injuried thigh must be … Read more
– origin and insertion: pairs of small muscles joining the spinous process of adjacent vertebrae, one on each side of the interspinalis ligament; continuous in the cervical region extending from the axis to the 2nd thoracic vertebrae and in the lumbar region from the first lumbar vertebrae to the sacrum; – action: extension and hyperextension … Read more
– Discussion: – major internal rotators are teres major, latissimus, pect major; – latissimus dorsi & teres major insert along medial lip of bicipital groove & pectoralis major along lateral lip and also serve as internal rotators; – these muscles comprise larger mass than those that externally rotate the humerus … Read more
– Discussion: – condyles will frx apart w/ variable amount of displacement, & comminution; – Approach: – use posterior approach w/ olecranon osteotomy; – articular surface is restored using interfragmentary lag screw fixation; – coronoid and olecranon fossa must not be violated with fixation, nor should width … Read more
– Discussion: – when needle is inserted into muscle or moved w/in muscle, there is a single burst of activity that usually lasts 300 to 500 ms; – activity is related to movement of electrode and is thought to result from mechanical stimulation or injury of the muscle fibers; – Increased Insertional Activity: … Read more
– See: – characteristics of cemented femoral stems – loosening cemented femoral component: – collar: in THR – optimal cementing technique – removal of cemented femoral stems: – Preparation for Insertion: – calcar planer: … Read more
– Discussion: – innervated by branches of obturator, femoral, & sciatic nerves; – Anterior and Posterior Innervation Groups: – posterior group: – posterior articular nerve of tibial nerve which crosses posterior capsule at level of oblique popliteal ligament; … Read more