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European Radiology Experimental
Fig. 1 | European Radiology Experimental

Fig. 1

From: Combined and hybrid marker models for radiostereometry assessment of polyethylene liner motion in dual mobility hip prosthesis: a proof-of-concept study

Fig. 1

The occlusion of liner markers by the shell and the head/neck/stem (only the left radiostereometric analysis image frame is shown). Despite a high number of markers in the liner (n = 12) (a), they tend to be occluded by the head/neck (b) and cup (c) in RSA recordings. Marker information can be used as a simple marker model (green markers) (d), a combined marker configuration model (e) that merges marker information from several recordings (blue markers) or a hybrid model (f) that adds the theoretic marker positions (red markers) from the computer-assisted drawings of the drill guide used to insert the tantalum markers

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