Warfarin induces Skin Necrosis
– microvascular thrombotic process which results in skin necrosis; – occurs in patients with partial deficiency of protein C within the 1st 1-2 days of warfarin therapy
Month: July 2020
Wayne County Reduction
– Discussion: – Medial cortical overlap technique; – Kaufer H, et. al. (1974); – Stover, et al. (1971) – For unstable intertroch frxs w/ sl medial or posterior instability; – Reduction w/o medical cortical apposition or overlap is unstable & will result in femoral neck shortening and … 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
Volar PIP Dislocation
– Discussion: – rare injury caused by compression and rotation with PIP joint flexion; – may occur as simple dislocations or fracture dislocations; – it is often unstable and irreducible; – volar dislocation involves disruption of central slip, along w/ collateral ligaments and palmar … Read more
Wagner Grading System for Diabetic Foot Infections
– 0 – Intact Skin – 1 – Superficial ulcer of skin or subcutaneous tissue – 2 – Ulcers extend into tendon, bone, or capsule – 3 – Deep ulcer with osteomyelitis, or abscess – 4 – Gangrene of toes or forefoot – 5 – Midfoot or hindfoot gangrene
Waddel Criteria
– Discussion: – Waddel determined 5 findings on PE which correlated w/ non organic LBP known as the 5 Waddell criteria; – he noted that most patients w/ documented organic LBP had one or none of Waddell criteria, and that patients who had 3/5 Waddell criteria were much more likely have non organic LBP; … Read more
Volar Finger Tip Infections / Felon
– See: Infections of the Hand – Discussion: – if infection extends thru dermis, the pad of digit becomes involved; – usually cause by staph aureus; – barriers to proximal migration of infection: – anatomic arrangement of fibrous septum; … Read more
Volkmann’s contracture
– See: Compartment Syndrome – Discussion: – type of forearm ischemic contracture resulting from brachial artery injury usually associated w/ supracondylar frx of humerus; – may see loss of motor & sensory function, however, classic involvment is w/ anterior interosseous branch of median nerve; – pathology: … Read more
Volar Plate Arthroplasty for PIP Dislocation
– Discussion: – is always detached (usually from middle phalanx) in PIP dorsal dislocations; – distal avulsion of volar plate in dorsal PIP dislocations makes entrapment of plate w/in the joint unlikely (in contrast to MP joint in which complex dorsal dislocations prevent closed reduction); … Read more