Radiostereometric analysis is a highly accurate imaging technique. A recent advance in radiostereometric analysis is the use of flat panel digital radiography, which provides the opportunity for quick analysis using radiostereometric analysis. However, such a setup is expensive. Using large cassettes for small joints could minimize the cost. In this article, we investigated the influence of cassette size for small joint examinations with a biplanar radiostereometric analysis setup. Our results indicated that there is no significant difference in the precision when using large cassettes over small cassettes, whether or not imaging magnification is applied.
KärrholmJHerbertsPHultmarkP. Radiostereometry of hip prostheses. Review of methodology and clinical results. Clin Orthop Relat Res1997; 344: 94–110.
2.
ValstarERGillRRydL. Guidelines for standardization of radiostereometry (RSA) of implants. Acta Orthop2005; 76: 563–572.
3.
McCaldenRWNaudieDDYuanX. Radiographic methods for the assessment of polyethylene wear after total hip arthroplasty. J Bone Joint Surg Am2005; 87: 2323–2334.
4.
DigasGKärrholmJThannerJ. Highly cross-linked polyethylene in total hip arthroplasty: randomized evaluation of penetration rate in cemented and uncemented sockets using radiostereometric analysis. Clin Orthop Relat Res2004; 429: 6–16.
5.
JohansonPEAntonssonMShareghiB. Early subsidence predicts failure of a cemented femoral stem with minor design changes. Clin Orthop Relat Res2016; 474: 2221–2229.
6.
BourneRBMcCaldenRWNaudieD. The next generation of acetabular shell design and bearing surfaces. Orthopedics2008; 31 (12Suppl. 2): 818–826.
7.
JonssonBAKadarTHavelinLI. Oxinium modular femoral heads do not reduce polyethylene wear in cemented total hip arthroplasty at five years: a randomised trial of 120 hips using radiostereometric analysis. Bone Joint J2015; 97-B: 1463–1469.
CaiRYuanXRorabeckC. Development of an RSA calibration system with improved accuracy and precision. J Biomech2008; 41: 907–911.
10.
YuanXRydL.Accuracy analysis for RSA: a computer simulation study on 3D marker reconstruction. J Biomech2000; 33: 493–498.
11.
RowlandsJA.The physics of computed radiography. Phys Med Biol2002; 47: R123–R166.
12.
YuanXLam Tin CheungKHowardJL. Radiostereometric analysis using clinical radiographic views: validation measuring total hip replacement wear. J Orthop Res2016; 34: 1521–1528.
13.
BansalGJ.Digital radiography. A comparison with modern conventional imaging. Postgrad Med J2006; 82: 425–428.
14.
YaffeMJRowlandsJA.X-ray detectors for digital radiography. Phys Med Biol1997; 42: 1–39.
15.
BörlinNThienTKärrholmJ. The precision of radiostereometric measurements. Manual vs. digital measurements. J Biomech2002; 35: 69–79.
