title: Detection of small periprosthetic bone defects after total knee arthroplasty.
abstract: Large bone defect around total knee prostheses is among the most critical challenges in revision surgery. However, it is difficult to detect bone defects around a prosthesis in early stage. We compared the efficacy of the detection of small bone defects between fluoroscopically guided plain radiography, CT, MRI, and a novel tomographic technique (tomosynthesis) using the six pig knee models. No bone defects were detected with plain radiography and MRI. The sensitivity and specificity of CT were 61.5% and 64.1%, respectively. The sensitivity and specificity of tomosynthesis were 85.4% and 87.2%, respectively. The radiation dose of tomosynthesis was 6% of that of CT. The cost of tomosynthesis was 28% of that of CT. Tomosynthesis was superior in terms of diagnosis, radiation dose, and cost.
authors: Department of Orthopaedic Surgery, Osaka City University Graduate School of Medicine, Osaka, Japan.
authors: Yukihide
authors: Y
authors: Minoda
authors: Department of Orthopaedic Surgery, Osaka City University Graduate School of Medicine, Osaka, Japan.
authors: Taku
authors: T
authors: Yoshida
authors: Sonodakai Joint Replacement Center Hospital, Tokyo, Japan.
authors: Kazutaka
authors: K
authors: Sugimoto
authors: Shimadzu Corporation, Kyoto, Japan.
authors: Shinogo
authors: S
authors: Baba
authors: Department of Orthopaedic Surgery, Osaka City University Graduate School of Medicine, Osaka, Japan.
authors: Mitssuhiko
authors: M
authors: Ikebuchi
authors: Department of Orthopaedic Surgery, Osaka City University Graduate School of Medicine, Osaka, Japan.
authors: Hiroaki
authors: H
authors: Nakamura
mesh_terms: D000818:Animals; D019645:Arthroplasty, Replacement, Knee / Q000009:adverse effects*; D003936:Diagnosis, Computer-Assisted; D004195:Disease Models, Animal; D005471:Fluoroscopy; D007719:Knee Joint / Q000000981:diagnostic imaging* / Q000601:surgery; D007720:Knee Prosthesis / Q000009:adverse effects*; D008279:Magnetic Resonance Imaging; D010014:Osteolysis / Q000175:diagnosis* / Q000209:etiology / Q000601:surgery; D011475:Prosthesis Failure; D012086:Reoperation; D012680:Sensitivity and Specificity; D013552:Swine; D014054:Tomography; D014057:Tomography, X-Ray Computed
keywords: bone defect; computed tomography; plain radiography; tomography; total knee arthroplasty