Ortho Oracle - orthopaedic operative atlas

Infraspinatus

(See also: Rotator cuff) origin: infraspinatus fossa of scapula insertion: posterior aspect of greater tuberosity of humerus, capsule of shoulder joint; demensions: infraspinatus has been shown to average 29 mm wide, with a mean medial-to-lateral width of 19 mm action: extension, horizontal extension and lateral rotation of humerus at the shoulder joint. the infraspinatus is the … Read more

Acetaminophren/Tylenol

for mild pain, HA, F, Nonnarcotic analgesic, Antipyretic, Adult: 350-650-1000mg PO q4-6hr; Max: 3.2 gm per 24hr; OD may cause hepatoxicity (often delayed), antidote is N-acetylcystiene; No antiplatlet activity; No antiinflamitory property Caution with patients with Glucose 6 Phos defficiency; Contraindications: Acetominophren hypersensitivity; overdosage presents early as Nausea, Vomiting, and malaise, and presents late as clinical and … Read more

Acetabular Exposure and Preparation for Reaming

(see also: acetabular component) Discussion it is essential to have optimal acetabular exposure; once acetabular exposure is achieved, then note native acetabular anteversion; Exposure for hips w/ severe osteoarthritis (or w/ heavily scarred hips) it may be necessary to fully release the quadratus femoris, and a portion of the gluteal sling; because the majority of … Read more

Above the Knee Amputation

  (see also: AKA Prosthesis, Amputations in the Diabetic Patient Discussion average AK amputee walks 43% slower and expends 89% more kcal/min than the normal person; if proximal circulation is adequate, a longer anterior muscle flap may be left and the combination myodesis- myoplasty technique is used; ability to ambulate with a prosthesis depends heavily … Read more

Above Knee Amputation Prosthesis

Discussion it is important that knee joint is extended throughout stance phase; this means that the components are assembled so that a straight line extended fromthe "trochanter" will pass anterior to the knee and through the ankle; friction is adjusted to help control the amount of knee flexion and to help decelerate the shank; mechanical … Read more

Hemophilia

Discussion classic disease results from deficiency of factor VIII clotting activity; hemophilia A is not caused by an absolute deficiency of factor VIII, but from an abnormal molecule making up part of the VIII clotting factor; hemophilic arthropathy: pathologic changes (coag pathway / coag labs); inheritance pattern: sex-linked recessive; affected male will have normal sons … Read more

Hyaluronic Acid

(see also: osteoarthritis of the knee) Discussion hyaluronic acid is a glycosaminoglycan found in synovial fluid & cartilage; complex sugar (not a protein) ancient molecule, highly conserved- identical function acts as lubricant and shock absorber; acts as barrier permitting metabolites to pass thru it by diffusion but resists penetration by bacteria and other infectious agents; … Read more

Healing of Cartilage

(see also: Chondral Injuries: Nourishment) Discussion articular cartilage is avascular & is prevented from mounting a vascular response when there is isolated cartilage injury; absence of vessels w/ in cartilage imposes limitations on healing potential; indeed, some traumatic defects in cartilage apparently never heal; chondrocytes in articular cartilage are capable of cell division & are … Read more

Septic Arthritis

Discussion » orthopaedic infection menu general orders and treatment differential diagnosis » (also consider Brucella melitensis, Borrelia burgdorferi and Treponema pallidum) Painful knee–an unusual cause secondary to pseudomonas septic arthritis of the hip. Septic until proven otherwise: approach to and treatment of the septic joint in adult patients. Indicators for detection of septic arthritis in … Read more