Ortho Oracle - orthopaedic operative atlas

Head Injury in the Child

– Discussion:     – children have relatively fewer intracranial-mass lesions but relatively more intracranial hypertension than adults;     – tendency to have diffuse brain swelling puts children at increased risk of secondary brain injury;     – all children with Glasgow coma scores less/= 12 require special monitoring of their neurologic status;   … Read more

Heart Rate

– Discussion:     – every effort should be made to maintain sinus rhythm, the sinus mechanism being responsible for approx 25% of cardiac f(x);     – this is effected predominately thru synchronized end dialstolic Preload augmentation

Heat Stroke

– Discussion:    – heat exhaustion:          – dizzniness, fatigue, nause vomiting and mild temp elevation    – heat stroke – core temp greater than 104 with mental status changes          – brain loses ability to regulate heat (cooling system fails)          – organ failure          – strikes suddenly with little warning       … Read more

Heat Stroke and Heat Related Illness

div class=”mh-row clearfix”> h1>/h1> div class=”bodycopy”>br/> br/>  font size=”5″>a href=”http://www.orthonc.com/heat5/heat5.html”>Prevention of Heat Stoke Lecture:/a>/font>/div>br/>hr/>br/>br/>br/>Last updated by Clifford R. Wheeless, III, MD on Thursday, June 26, 2008 12:20 pmbr/> /div>

Harris Beath View

– See: – Radiographic Features of Talocalcaneal Coalition  – Discussion:  – demonstrates the body of the calcaneus, middle facet of the sub-talar Joint and the sustenaculum tali;   – Talocalcaneal Coalition:  – x-ray appearance of two facets either in same plane or at an angle greater than 20 deg to each other suggests coalition;  – … Read more

Haversian System

– Discussion:     – haversian systems are of two types, primary and secondary;     – primary systems are formed on the growing surface of bone; periosteal vessels running in long axis of bone become surrounded by bone,           first in a trough, then completely buried in canal;     – this canal is at first … Read more

Hawkins sign

– Discussion:     – sign provides evidence of revascularization of talar body;     – indicated by patchy subchondral osteoporosis at approx 6-8 weeks;     – appearance of decreased subchondral bone density (subchondral resporption) in the dome of talus 6 to 8 wks following injury indicates that there is sufficient vascular supply to bone to … Read more

Hawkins Type I Talar Fractures

– Discussion:     – type I fractures represent non displaced fractures;     – fracture line entering the subtalar joint between the middle and posterior facets;     – only those frxs in which there is no displacement of frx line and no incongruity of subtalar joint are designated as type I frx; – … Read more