Tilman Graulich1, Julius Gerhardy2, Marcus Örgel2, Tarek Omar-Pacha2, Mohamed Omar2, Christian Krettek2, Daniel Guenther3. 1. Trauma Department, Hannover Medical School, Hannover, Germany graulich.tilman@mh-hannover.de. 2. Trauma Department, Hannover Medical School, Hannover, Germany. 3. Department of Orthopaedic Surgery, Trauma Surgery, and Sports Medicine, Cologne Merheim Medical Centre, Witten/Herdecke University, Cologne, Germany.
Abstract
BACKGROUND/AIM: Proper radiographic documentation of implant alignment is needed to analyse malrotation and malpositioning. We examined whether intraoperative fluoroscopic images can achieve more accurate image quality than postoperative radiographic X-ray images. PATIENTS AND METHODS: We prospectively analysed 30 consecutive patients after total knee arthroplasty (TKA). We compared intraoperative fluoroscopic images with postoperative radiographic X-ray images. Radiation exposure was documented. RESULTS: Fluoroscopic anterior-posterior images could achieve accurate image quality in 77% compared to 60% in radiographic images (p=0.016) and 54% compared to 34% on lateral view, respectively (p=0.008). Very good intra-observer correlation for fluoroscopic images could be achieved for femoral α angle with 0.84. Radiation exposure was 0.087+/-0.128 mGy. CONCLUSION: We observed significantly better image quality in fluoroscopic images than in radiographic X-ray images. The observed radiation exposure is lower than those expected for radiographic X-ray images. We conclude that fluoroscopic images can produce higher image quality and decreased radiation exposure. Copyright
BACKGROUND/AIM: Proper radiographic documentation of implant alignment is needed to analyse malrotation and malpositioning. We examined whether intraoperative fluoroscopic images can achieve more accurate image quality than postoperative radiographic X-ray images. PATIENTS AND METHODS: We prospectively analysed 30 consecutive patients after total knee arthroplasty (TKA). We compared intraoperative fluoroscopic images with postoperative radiographic X-ray images. Radiation exposure was documented. RESULTS: Fluoroscopic anterior-posterior images could achieve accurate image quality in 77% compared to 60% in radiographic images (p=0.016) and 54% compared to 34% on lateral view, respectively (p=0.008). Very good intra-observer correlation for fluoroscopic images could be achieved for femoral α angle with 0.84. Radiation exposure was 0.087+/-0.128 mGy. CONCLUSION: We observed significantly better image quality in fluoroscopic images than in radiographic X-ray images. The observed radiation exposure is lower than those expected for radiographic X-ray images. We conclude that fluoroscopic images can produce higher image quality and decreased radiation exposure. Copyright
Authors: Randa K Elmallah; Giles R Scuderi; Julio J Jauregui; R Michael Meneghini; Doug A Dennis; David B Backstein; Robert B Bourne; Michael A Mont Journal: J Arthroplasty Date: 2015-08-18 Impact factor: 4.757
Authors: P Lemaire; D P Pioletti; F M Meyer; R Meuli; J Dörfl; P F Leyvraz Journal: Knee Surg Sports Traumatol Arthrosc Date: 1997 Impact factor: 4.342