Table 2.
Effect of sagittal and coronal alignment changes on socket reaction moment impulse.
| Alignment changes | Valgus moment impulse (Nm·s/kg) |
Varus moment impulse (Nm·s/kg) |
||
|---|---|---|---|---|
| Mean (SD) | 95% CI | Mean (SD) | 95% CI | |
| Coronal Angle | ||||
| 6° Abd | 0.0001 (0.0002) | –0.0001, 0.0002 | –0.1126 (0.0421)† | –0.1427, –0.0825 |
| 4° Abd | 0.0001 (0.0002) | –0.0001, 0.0002 | –0.0863 (0.0243)† | –0.1037, –0.0689 |
| 2° Abd | 0.0006 (0.0010)* | –0.0002, 0.0013 | –0.0583 (0.0258)† | –0.0768, –0.0398 |
| Aligned | 0.0032 (0.0039) | 0.0005, 0.0060 | –0.0279 (0.0169) | –0.0400, –0.0159 |
| 2° Add | 0.0113 (0.0093) | 0.0046, 0.0180 | –0.0114 (0.0109)† | –0.0192, –0.0036 |
| 4° Add | 0.0277 (0.0191)† | 0.0140, 0.0414 | –0.0036 (0.0054)† | –0.0075, 0.0002 |
| 6° Add | 0.0532 (0.0279)† | 0.0332, 0.0732 | –0.0018 (0.0044)† | –0.0050, 0.0013 |
| Coronal Translation | ||||
| 15 mm Lat | 0.0001 (0.0002) | –0.0001, 0.0002 | –0.1047 (0.0262)† | –0.1235, –0.0860 |
| 10 mm Lat | 0.0003 (0.0006) | –0.0001, 0.0007 | –0.0743 (0.0273)† | –0.0938, –0.0547 |
| 5 mm Lat | 0.0012 (0.0021)* | –0.0003, 0.0027 | –0.0532 (0.0268)† | –0.0720, –0.0340 |
| Aligned | 0.0032 (0.0039) | 0.0005, 0.0060 | –0.0279 (0.0169) | –0.0400, –0.0159 |
| 5 mm Med | 0.0073 (0.0066)* | 0.0026, 0.0120 | –0.0153 (0.0105)† | –0.0228, –0.0078 |
| 10 mm Med | 0.0179 (0.0141)† | 0.0078, 0.0279 | –0.0057 (0.0050)† | –0.0093, –0.0020 |
| 15 mm Med | 0.0341 (0.0218)† | 0.0185, 0.0497 | –0.0015 (0.0022)† | –0.0031, 0.0000 |
| Alignment changes | Extension moment impulse (Nm·s/kg) |
Flexion moment impulse (Nm·s/kg) |
||
|---|---|---|---|---|
| Mean (SD) | 95% CI | Mean (SD) | 95% CI | |
| Sagittal Angle | ||||
| 6°Ext | 0.1620 (0.0449) | 0.1298, 0.1941 | –0.0079 (0.0067) | –0.0126, –0.0031 |
| 4°Ext | 0.1652 (0.0490) | 0.1302, 0.2002 | –0.0092 (0.0088) | –0.0155, –0.0030 |
| 2° Ext | 0.1620 (0.0476) | 0.1279, 0.1960 | –0.0091 (0.0085) | –0.0152, –0.0030 |
| Aligned | 0.1658 (0.0512) | 0.1292, 0.2024 | –0.0090 (0.0108) | –0.0167, –0.0013 |
| 2° Flex | 0.1704 (0.0553) | 0.1309, 0.2100 | –0.0066 (0.0077) | –0.0121, –0.0011 |
| 4° Flex | 0.1734 (0.0621) | 0.1289, 0.2178 | –0.0070 (0.0101) | –0.0143, 0.0002 |
| 6° Flex | 0.1824 (0.0745) | 0.1291, 0.2356 | –0.0074 (0.0148) | –0.0180, –0.0032 |
| Sagittal Translation | ||||
| 15 mm Ant | 0.1168 (0.0374)† | 0.0900, 0.1435 | –0.0179 (0.0152)† | –0.0288, –0.0069 |
| 10 mm Ant | 0.1328 (0.0405)† | 0.1038, 0.1618 | –0.0145 (0.0130)† | –0.0239, –0.0052 |
| 5 mm Ant | 0.1473 (0.0411)* | 0.1180, 0.1767 | –0.0109 (0.0098) | –0.0179, –0.0039 |
| Aligned | 0.1658 (0.0512) | 0.1292, 0.2024 | –0.0090 (0.0108) | –0.0167, –0.0013 |
| 5 mm Post | 0.1864 (0.0595)† | 0.1438, 0.2290 | –0.0068 (0.0088) | –0.0131, –0.0047 |
| 10 mm Post | 0.2033 (0.0728)† | 0.1513, 0.2554 | –0.0054 (0.0080)* | –0.0111, 0.0003 |
| 15 mm Post | 0.2368 (0.0788)† | 0.1805, 0.2932 | –0.0039 (0.0068)* | –0.0088, 0.0010 |
Abbreviations: 95% CI, 95% confidence interval; Abd, abduction; Add, adduction; Ant, anterior; Ext, extension; Flex, flexion; Lat, lateral; Med, medial; Post, posterior; SD, standard deviation.
*
Indicates a significant difference at P < 0.05 from the nominally aligned condition.
†
Indicates a significant difference at P < 0.01 from the nominally aligned condition.