Ortho Oracle - orthopaedic operative atlas

Interspinales

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 of the spine; nerve … Read more

Internal Rotators of the Shoulder

– 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

Intercondylar fractures

– 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

Insertion of Cemented Femoral Stem

– 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

Insertional Activity

– 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

Innervation of the Skin of the Gluteal Region

– Discussion:     – in lateral gluteal region, cutaneous nerves are lateral cutaneous branches of T12 & Iliohypogastric (L1 ) nerves;     – superior region: receives superior cluneal nerves (lateral branches of dorsal rami of L1, L2, L3)          – these superior cluneal nerves may be damaged by iliac crest grafting   … Read more