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Comparison of Gaps Between the 2 Cup Surfaces*
| PTC (N = 48) | PPS (N = 48) | P Value† | |||||
| With Gaps | Without Gaps | Ratio | With Gaps | Without Gaps | Ratio | ||
| Total | 8 | 40 | 8:40 | 4 | 44 | 4:44 | 0.355 |
| Zone 1 | 3 | 45 | 3:45 | 0 | 48 | 0:48 | 0.242 |
| Zone 2 | 5 | 43 | 5:43 | 2 | 46 | 2:46 | 0.435 |
| Zone 3 | 0 | 48 | 0:48 | 3 | 45 | 3:45 | 0.242 |
PTC = porous titanium coating, and PPS = porous plasma spray. The values are given as the number of patients.
Fisher exact test.
