Hansen T.B.,Orthopaedic Research Unit |
Hansen T.B.,Regional Hospital Holstebro |
Larsen K.,Orthopaedic Research Unit |
Larsen K.,Regional Hospital Holstebro |
And 4 more authors.
Journal of Hand Surgery: European Volume | Year: 2010
Both marker-based roentgen stereophotogrammetric analysis (RSA) and model-based RSA have been helpful evaluation tools in hip and knee arthroplasty. The purpose of this study was to test both model-based and marker-based RSA in the evaluation of total joint prostheses of the trapeziometacarpal joint. In a phantom study, the precision of marker-based RSA was tested with a cemented polyethylene cup and compared with the precision of model-based RSA in an uncemented Elektra screw cup. The precision of model-based RSA of the metacarpal stem was tested using an uncemented Elektra metacarpal stem. In a clinical study 11 patients had double stereo radiographs followed by RSA analysis. The precision of translation in both marker-based and model-based RSA was sufficient for clinical use, but rotation cannot be estimated with sufficient precision. © The Author(s), 2010.