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. 2013 Mar 6;22(7):1504–1508. doi: 10.1007/s00586-013-2719-3

Fig. 2.

Fig. 2

Rate of CPS misplacement. Re-PS indicates the distance between the registered level and the CPS insertion level. The rate of CPS misplacement increased significantly when the Re-PS = 1 (a) and Re-PS = 2 and 3 (b) compared to Re-PS = 0. *p < 0.01