Table 4.
Variable | Normal values* | MR | SR | P value† |
---|---|---|---|---|
Surface (mm2) | 79–638 | 288.5 (187.3) | 280.2 (89.1) | 0.527 |
Length (mm) | 346–880 | 728.2 (350.2) | 670.7 (208.5) | 0.473 |
Surface/length ratio | 0.72–1.39 | 0.9 (0.3) | 1.3 (0.3) | 0.000 |
Location of average displacement, x axis (mm) | −10.5 to 11.1 | 1.5 (9.8) | 0.9 (7.7) | 0.807 |
Location of average displacement, y axis (mm) | −3.6 to −51.4 | −32.8 (17.1) | −34.9 (22.9) | 0.596 |
Values are expressed as mean, with SD in parentheses; *normative database provided by manufacturer in the system, based on Bizzo et al. [3]; †Student’s t test; MR = patients receiving the multiradius design; SR = patients receiving the single-radius design.