Medical Malpractice Insurance for orthopaedic surgeons

Notchplasty

– Discussion: – abnormally narrow intercondylar notches have been shown to correlate directly with an increased incidence of ACL tears; – w/ excessive internal rotation of the femur, the ACL may be ruptured as it impinges on the edge of the intercondylar notch; – notchplasty is used to widen the anterior portion and recess of the … Read more

Notes for Wrightlock Spinal Fixation System

1) Because WRIGHTLOCK rods have a smaller diameter than other systems, the rods will seem flexible. However, a fully assembled WRIGHTLOCK construct will create rigidity comparable to a large rod system. The OCS instrumentation helps ensure a maximum correction by allowing the surgeon to plan the strains in the rods. With a large rod system, … Read more

NSAIDS: Non-Steroidal Anti-Inflammatory Drugs

– Discussion: – non steroidals exert their actions by inhibiting isoforms of cyclo-oxygenase 1 and 2; – cox 1: expressed in the stomach and kidneys; – cox 2: – cox 2 receptor is not normally expressed in synovial tissue; – regulates inflammatory response and is responsible for disease symptoms; – Specific Agents: – Aspirin – … Read more

Nucleus pulposus

– Discussion:     – nucleus pulposus consists of a network of delicate collagenous fibers in a mucoprotein gel rich in polysaccharide;     – contains type II collagen;     – nucleus has a high water content, apparently the result of imbibition by the gel;     – it functions to resist compressive loads; … Read more

Norepinephrine/Levodopa

– See:  – Inotropic Agents  – Discussion: – for hypotension refactory to high doses of dopamine ( >20 ug/kg/min);  – is peripherally converted to dopamine;  – Dosing: many patients require up to 40 ug/ml – titrate to blood pressure;  – Peds: initially 0.1 ug/kg/min titrated to effect;  – Method of Delivery:  – infusion is prepared … Read more

Normal Variants: of Occiput – C1 – C2

– Discussion:     – various stages of Fusion of the the basiocciput may be seen;     – ranging from partial fusion, either anterior or posterior, to complete occipitalatlantal fusion;     – atlantal-axial fusion anomalies are seen w/ equal frequency;     – aplasia / Hypoplasia may involve any portion of the ring of … Read more

Nortriptyline/Aventyl

– Discussion:     – for endogenous depression; tricyclic antidepressant;     – adult: 50-100mg PO qhs;     – increase to 300 mg/day if needed;     – note many anticholinergic side effects including blurred vision; urinary retention, dry mouth;            – as compared to other tricyclic antidepressants, nortriptyline has … Read more

Non Union of Humeral Fractures

– Discussion: – Non Union – General Discussion: – definition of fracture union: defined as bridging callus (ideally both cortices) on 2 orthogonal views with the disappearance of fracture lines – care must be taken not to mistake a pseudoarthrosis for a simple hypertrophic nonunion; – treatment of the pseudoarthrosis requires complete resection of the synovial tissue, and … Read more