Ortho Preferred Malpractice Insurance

Weber C Fractures

– Discussion:     – Weber C ankle fractures occur above the the syndesmosis and are similar to PER injuries in the            Lauge Hansen classification:     – classification:            – C:    fibula fracture above syndesmosis            – C1  diaphyseal fracture of the fibula, simple   … Read more

Weight Release

– See:       – Stance       – Muscle Activity During Gait – Discussion:     – during last portion of single limb stance & entirety of wt release, tibial external rotation continues, ankle plantar flexion is seen, and sub-            talar joint continues to invert;     – forefoot is now in a … Read more

WBC Differential

    – See Neutrophils/Left Shift  – Lymphocytes: (24-44%)  – Increased: Measles, German Measles, Mumps, Whooping Cough, Small pox, Chicken pox, Influenza, Hepatitis, Infectious Mononucleosis, Acute Infectious Lymphocytosis in children, Virtually any Viral Infection, Acute and Chronic Lymphocytic Leukemias;  – Decreased: After Stress, Burns, Trauma, Nl variation, Uremia;  – Monocytes (3-7%)  – Increased: Bacterial infection … Read more

Weiland’s Classification for Osteomyelitis

Type I: Open, exposed bone without evidence of osseous infection but with evidence of soft tissue infection; Type II: Circumferential, cortical, and endosteal infection; x-ray showing a diffuse inflammatory reaction, increased density, and spindle shaped sclerotic thickening of the cortex in addition to areas of bone resorption; often an involucrum surrounding a sequestrum; Type III: … Read more

Watson test

– Discussion:     – this manuever helps diagnose SLD but the test is not specific for SLD, because it may reposition entire proximal carpal row if row, rather than the scaphoid;     – manipulation of scaphoid by examiner may reproduce pt’s sensation of instability or even cause subluxation of proximal pole of the scaphoid;     … Read more

Warfarin (Coumadin)

Action inhibits Vit K dependent production of clotting factors  mainly inhibits prothrombin (II) and VII but also IX and X  VII (t/2=4-6hrs), IX (t/2=18-24hrs), X (t/2=18-24hrs), II (t/2=18-24)  proteins C (t/2=6 hrs) and S (early);  hence PT increases in 48 hrs 2nd to decr of VII but many days of therapy needed for therapuetic levels … Read more

Wallerian Degeneration

– Discussion:     – arises from severe nerve injury (axonotmesis or neurotmesis)     – characterized by axonal enlargement into an amorphorous mass, breakdown of the axons, and schwann cell ingestion of fragmented              myelin to provide clean endoneural tubes for advancement of regenerating axons;             – axonal sprouting … Read more