The Hip - book

Perilunate Dislocations

– See:        – Carpal Instability        – Ligaments of the Wrist – Discussion:     – perilunate dislocation pattern provides a whole spectrum of wrist sprains, fractures, dislocations;     – types of perilunate dislocations (in order of frequency):             – transscaphoid-perilunate       … Read more

Role of PeriOperative Oxygen in Reduction of Surgical Infection:

– Studies that Do Support the Use of O2 for Prevention of Infection:      – Supplemental Perioperative Oxygen to Reduce the Incidence of Surgical-Wound Infection       – Supplemental perioperative oxygen and the risk of surgical wound infection: a randomized controlled trial. – Studies that Do Not Support the Use of O2 for Prevention of Infection: … Read more

Periosteal Artery

– See:       – Epiphyseal Artery       – Metaphyseal Artery       – Nutrient Artery – Discussion:      – forms an extensive network of vessels covers entire length of the bone shaft;      – periosteal vessels send small branches thru minute channels in cortex to supply about outer … Read more

Percutaneous Fixation of Anterior Column Fx

  – See: Classification and Column Theory – Percutaneous Screw Placement:     – anterior column screws can be placed either antegrade (from cephalad to caudad) or retrograde (vice versa);     – implant: 7.3 or 8.0 mm cannulated screws;     – C-arm is placed perpendicular to the superior pubic ramus;       … Read more

Percutaneous Fixation of Type II Frx

– Discussion:     – note that type II fractures may often not be amenable to percutaneous fixation because an acceptable reduction of the depressed           fragment can be difficult to obtain;          – part of the difficult lies in the fact that the depressed fragment is buried w/ in the plateau and is … Read more

Percutaneous Pinning of Proximal Humeral Frx

– Technique for Surgical Neck Frx:     – use 2.5 mm terminally threaded AO Schanz pins;     – following appropriate reduction, one pin is inserted thru lateral arm, at a point 8 cm distal to acromion in order to avoid            axillary nerve;     – second pin is inserted … Read more

Perforating Vessels of the Femur

  – Discussion:     – arises from posterior aspect of profunda femoris  artery;     – they course directly against linea aspera of the femur & tendonous insertions of adductor muscles;     – inferior gluteus artery gives twigs to upper ends of muscle attaching to ischial tuberosity and transverse branch             of MFCA appears … Read more

PENTOBARBITAL: (NEMBUTAL)

Insomnia, anxiety, convulsions, induced coma following severe head injuries;  Peds: Sedative: 6mg/kg/dose PO or PR;  Hypnotic: 2-6 mg/kg/dose IM or PO;  Cerebral Edema: Load: 3-5 mg/kg IV x 1, then maintenance 2-3.5 mg/kg/dose q1hr prn to keep level between 25-40 ug/ml;  Can be habit forming; can cause respiratory depression; may produce profound hypotension when used … Read more

Peptic ulcer disease: Gastritis: PUD

 – H2 blocker:    – Cimetidine        – Zantac            – Pepcid        – Nizatidine  – Other:    – Antacids    – Omerprazole    – Nexium    – Carafate    – Protonix    – Aciphex (rabeprazole sodium):           – proton pump inhibitor approved for … Read more