Ortho Oracle - orthopaedic operative atlas

Rheumatoid Boutonniere

– See:       – Boutonniere Injuries – Menu       – Thumb Boutonniere Deformity – Discussion:     – rheumatoid boutonniere deformity begins w/ PIP synovitis & elongation capsule;     – inflammation leads to lengthening of central extensor slip and triangular ligament (becoming dysfunctional) and volar displacement of the lateral bands … Read more

Rheumatoid Factor

– Discussion:     – RF is term used to describe group of autoantibodies w/ anti-IgG activity;     – about 80-90% of RA pts have antibodies to the Fc region of IgG;     – this antibody, called rheumatoid factor (anti-IgG), will also occur in bacterial endocarditis, schistosomiasis, leprosy, osteomyelitis, and other chronic infections; … Read more

RF: Radiofrequency Signals

– Discussion:     – MRI signal is generated by subjecting atoms to radiofrequency pulsations;     – frequency of this precession is known as resonant frequency & is proportional to the strength of the applied magnetic field

Rhabdomyosarcoma

– See: Soft Tissue Menu – Discussion:     – describes sarcomas of smooth muscle (leiomyosarcoma) & sarcomas of skeletal muscle (rhabdomyosarcoma);     – rhabdomyosarcomas make up 2/3 of pediatric soft-tissue sarcomas;     – rhabdomyosarcoma has two forms:          – embryonal rhabdomyosarcoma:                – … Read more

Revision TKR: Isolated Liner Exchange

– Discussion:     – may be indicated for patients with knee stiffness and pain with securely fixed and appropriately aligned components;     – involves arthrolysis of adhesions and exchange to a thinner tibial polyethylene insert;     – in the report by Babis GC, et al, the authors reviewed their experience with this technique; … Read more