title: Single-photon-emission computerised tomography compared with planar bone scan to assess femoral head vascularity.
abstract: We performed single-photon-emission CT (SPECT) and planar bone scans to assess femoral head vascularity in ten patients with displaced intracapsular hip fracture. The heads were labelled with tetracycline and after excision at hemiarthroplasty were assessed for tetracycline uptake distribution by fluorescence under UV light. The four which had the greatest tetracycline uptake were normal on SPECT and planar imaging. In two cases the planar bone scans were normal although SPECT suggested avascularity thus giving false-negative results. Surgeons should be aware of this; SPECT may prove to be a more accurate method of assessing vascularity of the femoral head in fractures of the femoral neck.
authors.affiliation: University of Leicester, England.
authors.forename: S J
authors.initials: SJ
authors.lastname: Calder
authors.forename: A W
authors.initials: AW
authors.lastname: McCaskie
authors.forename: I P
authors.initials: IP
authors.lastname: Belton
authors.forename: D B
authors.initials: DB
authors.lastname: Finlay
authors.forename: W M
authors.initials: WM
authors.lastname: Harper
mesh_terms: D001178:Arthroplasty; D005270:Femur Head / Q000098:blood supply* / Q000000981:diagnostic imaging* / Q000601:surgery; D006620:Hip Fractures / Q000000981:diagnostic imaging* / Q000473:pathology*; D006801:Humans; D013669:Technetium Tc 99m Medronate; D013752:Tetracycline / Q000378:metabolism; D015899:Tomography, Emission-Computed, Single-Photon
chemical_list: D013752:Tetracycline; D013669:Technetium Tc 99m Medronate