The Hip book

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

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 / … 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

Boyd Surgical Approach

See:   – Thompson is especially suitable for the middle third of the radius, however, it is not suitable for distal third radial frxs because the posterolateral application of the plate may interfere w/ outcropping tendons to thumb, disturbing function;     – care is taken with this approach to avoid injury to the radial nerve and therefore … Read more

Bone-Scanning for Diagnosis of AVN

– Discussion:     – for detection of AVN, technetium-99 methylene-diphosphonate bone-scanning is a useful technique;           – bone-scanning may be less sensitive in the detection of AVN at early stage of the disease or when both hips are involved                  symmetrically;     – reactive of bone at the edge … Read more

Blood Supply of the Spinal Cord

– Discussion:     – blood is supplied to vertebral column by way of segmental arteries that arise near it from the aorta, or from adjacent arteries in areas            beyond the extent of the aorta;     – costocervical & intercostal arteries in thorax; lumbar and iliolumbar arteries in lumbar region; and lateral sacral … Read more