Development of Axis
– Anatomy: – Body: – one center (occassionally 2) appears by the fifth fetal month; – Neural Arches: – appear bilaterally by the 7 th fetal month – fuse posteriorly by the 2nd … Read more
Data Trace Editor
Developmental Dislocation of the Hip
– Discussion: – DDH involves displacement of the femoral head from the acetabulum (during the perinatal period) which disrupts the normal development of the hip joint; – DDH is estimated to occur in 1 – 1.5 cases per 1000 live births; – when an agressive screening system is in place (including routine use … Read more
Descending branch of the Lateral Circumflex Femoral Artery
– Discussion: – this branch is one of the major communications between deep and superficial femoral systems of the leg; – descending branch may arise separately from either femoral or profunda artery passes downward beneath Rectus Femoris; – provides branches to Vastus Lateralis & intermedius, accompanied by branches of Femoral Nerve, & … Read more
Descending Genicular Branch of superficial femoral artery
– Discussion: – descending genicular artery arises superomedially from from superficial femoral artery just proximal to adductor hiatus, and then immediately, it divides into the saphenous and articular branches; – saphenous branch anastomosises w/ medial inferior genicular artery; – articular branch: descends in the … Read more
Design of Acetabular Components
– Cementless Design: – acetabular components that are to be inserted w/o cement should be designed to be portions of spheres so that spherical reaming will optimize contact; – sufficient initial fixation is a requirement for osseointegration and secondary stability of press fit cups; – surface coating: – … Read more
Design and Function of the Patellar Component in TKR:
patello-femoral function: – significant forces are generated across the patellofemoral articulation on flexion and extension of the knee; – these forces progressively increase as flexion angle of knee increase; – contact area between the femur and the … Read more
DESIPRAMINE/NORPRAMIN
– for endogenous depresssion; is a tricyclic antidepressant; – Adult: 25-200mg/day in single or divided dose; usually as single HS dose; – Many anticholinergic side effects including blurred vision, urinary retention, dry mouth; – Note Side Effects: Sedation: +; Insomnia: 0; Anticholinergic:+; Orthostatic Hypotension: ++; Nausea: 0
Desmoplastic Fibroma
– See: – Bone Tumor Menu – Fibroma: – Fibromatosis: – Discussion: – also known as desmoid tumor; – is a rare tumor that that can involve bone or soft tissue; – is locally aggressive but does … Read more
Desmopressin (Synthetic Arginine Vasopressin) (DDAVP, Stimate)
– For Diabetes Insipidus (intranasal & parental); bleeding due to hemophilia A and Type I von Willebrand’s dz (parental); bleeding from esophageal varices; head trauma; – it can transiently correct the bleeding time in most patients with chronic renal failure and other acquired disorders of platelet function; – DI: Intranasally: Adult: 0.1-0.4 mL (10-40 ug) … Read more
Dens Fracture
– See: – Anatomy of C2 – Development of Dens – Odontoid view: – Pediatric Dens Frx: – Discussion: – odontoid fractures are the most common upper Cervical Spine fractures; – remeber rule of thirds – cervical cord occupies … Read more