Quadriceps Muscle
– See: – Innervation – Rectus Femoris / Intermedius / Lateralis / Medialis – Extensor Mechanism Injuries of the Knee – Rupture of the Quadriceps – Rectus Femoris: origin: – straight head: anterior … Read more
– See: – Innervation – Rectus Femoris / Intermedius / Lateralis / Medialis – Extensor Mechanism Injuries of the Knee – Rupture of the Quadriceps – Rectus Femoris: origin: – straight head: anterior … Read more
– Anatomy: (see forearm flexors) – origin: – humeral head: medial epicondyle of humerus & common flexion tendon; – ulnar head: medial side of coronoid process of ulna; – insertion: middle 1/3 of lateral surface of … Read more
– Discussion: – see: compression of the median nerve at the elbow and forearm; – compression of median nerve where it passes between the two heads of the pronator teres; – Differential Dx: – lacertus fibrosus: – draws tightly across the median nerve when the … Read more
– Frx – Menu (See: Post Op Orders) – Axial Skeleton – C-spine – Spine – Pelvis – Upper Extremity – Shoulder – Humerus – Elbow – Wrist – Hand – Lower Extremity – Hip – Femur – Knee – Tibia – Ankle – Foot – Systems – Neuro – Cranio-Maxillo-Facial – Spine – Cardiac … Read more
– Discussion: – preganglionic lesions represent root avulsions from the spinal cord; – 2 catagories: – central avulsions: nervs are avulsed directly from the spinal cord; – intradural ruptures: rootlets are ruptured proximal to the dorsal root ganglion; – preganglionic injuries … Read more
– Discussion: – arises from disruption of the lateral collateral and annular ligaments; – associated conditions: elbow dislocation, radial head excision, coronoid fracture; – diff dx: lateral epicondylitis – LCL anatomy: – lateral collateral ligament consists of a ligamentous expansion proceding down from lateral … Read more
– See: Lateral Approach – Discussion: – allows exposure of the entire distal humerus as well as radial head, radial neck, and biceps tuberosity; – indications for this approach include frxs of distal humerus, old posterior elbow dislocations, radial head frx, radial head excisions, arthroplasties, fixation of distal biceps tendon rupture, and … Read more
– See: PIN – Inciting causes: – radiocapitellar joint ganglions and synovitis – congenital tightness of ligamentous arcade of Frohse; – include poorly placed screws for fracture fixation – PIN is vulnerable during ORIF of proximal radius; – in 25% … Read more
Discussion: – the hyperextension phase of throwing may be the most important component of internal impingement; – in the late cocking position (abduction, external rotation, extension) may cause the postero-superior edge of the glenoid labrum to become caught between the humeral head and rotator cuff (surface of the infraspinatus and posterior fibers of supraspinatus tendon); – … Read more
– Anatomy: – this nerve is deep motor branch of radial nerve & supplies all of extrinsic wrist extensors except for the ECRL; – radial nerve enters the anterior compartment of the arm lying deeply between brachialis medially & BR & ECRL laterally; – PIN passes thru supinator muscle in its course from anterior to … Read more