The Hip book

Levator Scapula

  origin: transverse process of 1st 4 cervical vertebrae insertion: vertebral border of scapula between superior medial angle and scapular spine; action: elevates scapula to inferiorly rotate glenoid cavity; working with the upper Trapezius , elevates and adducts scapula; reversed origin insertion action: when scapula is fixed, laterally flexes and slightly rotates cervical spine; nerve supply: dorsal … Read more

Latissimus Dorsi

– origin: broad aponeurosis that originates on the spinous processesof the lower 6 thoracic and all lumbar vertebrae;          posterior crest of ilium, posterior surface  of sacrum, lower 3 or 4 ribs, and an attachment of the tip of the scapula; – insertion: flat tendon that twists upon itself to insert into the intertubercular groove of … Read more

Lateral stenosis

– Discussion:     – involves impingment of nerve roots lateral to the thecal sac, as they pass thru the neural foramina;     – anatomically there is compression from medial aspect of hypertrophic superior articular facet,     – often associated with facet joint arthropathy (superior articular process enlargement) and disc disease;     … Read more

Lateral Plateau Frx: Approach & Fixation

– Discussion: Tibial Plateau Frx Menu     – lateral plateau frxs include:           – type I fractures            – type II fractures            – type III fractures            – local compression frx which are similar to type iii frx – Surgical Stratedgy:     – extensile surgical approach that exposes whole … Read more

Lateral Cord

– Discussion:     – arises from anterior division of upper (C5, C6) & middle trunks (C7);     – lateral pectoral nerve     – musculocutaneous nerve     – lateral root of the median nerve : (FCR  & pronator teres) and (sensory fibers to the median nerve)     – lateral cord branches … Read more