Ortho Oracle - orthopaedic operative atlas

Bouvier’s Test

– Discussion:     – used to determine if PIP Joint capsule & extensor mechanism are working normally;     – if functioning normally, blocking MP joint hyperextension allows IP joint extension; – Diff Dx of Positive Test:      – attentuation of central slip      – adherent central slip at the PIP Joint; … Read more

Bone Tumors

– See:           – Biopsy           – Chemotherapy:           – General Features                   – radiographic features                   – histologic features           – Location of Tumors: … Read more

Bone Scan for Scaphoid Frx

– Discussion:     – radionuclide imaging was performed 2-3 hours after administration of technetium-99m methylene diphosphonate, 4 days after injury;     – false-positive rate: 6-16%     – false-negative rate:   0% Can a day 4 bone scan accurately determine the presence or absence of scaphoid fracture?

Bone Scan in Non Cemented THR

    – See:  – General Discussion of Bone Scans:  – Bone Scans in THR: – Discussion:  – evaluation of of porous coated prosthesis may require a different interpretation from cemented THR;  – bone & fibrous tissue ingrowth into porous acetabular & intertrochanteric surfaces may cause findings unrelated to complications;  – with loosening there is … Read more

Bone Scan: in THR

– See: Total Hip Replacement Menu:           – General Discussion of Bone Scans: – Normal THR:     – normal study (minimal reative bone formation) may be expected from months to a year after placement;     – area of lesser trochanter to midshaft of prosthesis usually becomes normal in about … Read more