Ortho Oracle - orthopaedic operative atlas

C7 Neurologic Level

– C6-7 Disc Herniation:     – intervertebral disk herniation between 6th & 7th cervical vertebrae would affect 7th cervical nerve root;     – impingement on root at this level would most likely cause sensory changes down the posterior aspect of the arm, posterolateral             aspect of forearm, about dorsum of hand, and long … Read more

Burst Fracture of Spine

            – Discussion: – fall from a height, landing on one’s feet, is typical of this fracture; – burst frx involve only compressive failure of vertebral body both anteriorly & posteriorly, w/ failure of both anterior & middle columns; – axial loading applied to intravertebral disc results in increased nuclear pressure and … Read more

Burkhalter Transfer for Claw Deformity

– See:     – Intrinsic Muscles of the Hand:     – Intrinsic Muscles Deficit – Discussion:     – involves motor transfer to the radial side of the mid proximal phalanx, just distal to the attachment site of the lumbrical (as opposed            to insertion on  lateral band);            – this … Read more

Bulbocavernosus Reflex

– Discussion:     – bulbocaverosus reflex refers to anal sphincter contraction in response to squeezing the glans penis or tugging on the Foley;          – reflex involves S-1, S-2, and S-3 nerve roots and is spinal cord- mediated reflex arc;     – following spinal cord trauma, presence or absence of … Read more

Brachialis Muscle

– Anatomy:     – origin: lower 1/2 of the anterior surface of the humerus;     – insertion: tuberosity and coronoid process of the ulna;     – action: flexes the forearm at the elbow;     – nerve supply: branches of musculocutaneous, C5, C6;     – synergist: brachioradialis, biceps brachi

Brachioradialis

– origin:     – proximal 2/3 of the lateral supracondylar ridge of the humerus and lateral intermuscular septum; – insertion:     – inserts into lateral surface of distal radius, immediately above styloid process; – synergist:  Brachialis ,   biceps brachi ; – nerve supply: radial  –   C6  >   C5 – function: … Read more

Brachial Plexus

– Work Up for Brachial Plexus Injuries – Brachial Neuritis: – Erb’s Palsy – Leffert Classification  of Brachial Plexus Injuries; – Lower Root Injury: (Klumpke) – Obstetrical Paralysis: – Parsonage-Turner Syndrome: – Traumatic Brachial Plexus Palsy in Children – Stinger / Upper Trunk Injuries – Work Up for Brachial Plexus Injuries: – Anatomy: – roots: – … Read more