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Comparison of a simplified skin pointer device compared with a skeletal marker for knee rotation laxity:A cadaveric study using a rotation-meter
Comparison of a simplified skin pointer device compared with a skeletal marker for knee rotation laxity:A cadaveric study using a rotation-meter
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摘要：
AIM To compare the measurements of knee rotation laxity by non-invasive skin pointer with a knee rotation jig in cadaveric knees against a skeletally mounted marker.METHODS Six pairs of cadaveric legs were mounted on a knee rotation jig.One Kirscher wire was driven into the tibial tubercle as a bone marker and a skin pointer was attached.Rotational forces of 3,6 and 9 nm applied at 0°,30°,45°,60°and 90°of knee flexion were analysed using the Pearson correlation coefficient and paired t-test.RESULTS Total rotation recorded with the skin pointer significantly correlated with the bone marker at 3 nm at 0°(skin pointer 23.9±26.0°vs bone marker 16.3±17.3°,r=0.92;P=0.0),30°(41.7±15.5°vs 33.1±14.7°,r=0.63;P=0.037),45°(49.0±17.0°vs 40.3±11.2°,r=0.81;P=0.002),60°(45.7±17.5°vs 34.7±9.5°,r=0.86;P=0.001)and 90°(29.2±10.9°vs 21.2±6.8°,r=0.69;P=0.019)of knee flexion and 6 nm at 0°(51.1±37.7°vs 38.6±30.1°,r=0.90;P=0.0),30°(64.6±21.6°vs 54.3±15.1°,r=0.73;P=0.011),45°(67.7±20.6°vs 55.5±9.5°,r=0.65;P=0.029),60°(62.9±22.4°vs 45.8±13.1°,r=0.65;P=0.031)and 90°(43.6±17.6°vs 31.0±6.3°,r=0.62;P=0.043)of knee flexion and at 9 nm at 0°(69.7±40.0°vs 55.6±30.6°,r=0.86;P=0.001)and 60°(74.5±27.6°vs 57.1±11.5°,r=0.77;P=0.006).No statistically significant correlation with 9 nm at 30°(79.2±25.1°vs 66.9±15.4°,r=0.59;P=0.055),45°(80.7±24.7°vs 65.5±11.2°,r=0.51;P=0.11)and 90°(54.7±21.1°vs 39.4±8.2°,r=0.55;P=0.079).We recognize that 9 nm of torque may be not tolerated in vivo due to pain.Knee rotation was at its maximum at 45°of knee flexion and increased with increasing torque.CONCLUSION The skin pointer and knee rotation jig can be a reliable and simple means of quantifying knee rotational laxity with future clinical application.
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| 篇名 | Comparison of a simplified skin pointer device compared with a skeletal marker for knee rotation laxity:A cadaveric study using a rotation-meter | ||
| 来源期刊 | 世界骨科杂志 | 学科 | 医学 |
| 关键词 | Rotatometer Rottometer KNEE LAXITY CRUCIATE BIOMECHANICS Measurement | ||
| 年，卷（期） | 2018,（6） | 所属期刊栏目 | |
| 研究方向 | 页码范围 | 85-91 | |
| 页数 | 7页 | 分类号 | R |
| 字数 | 语种 | ||
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Rotatometer
Rottometer
KNEE
LAXITY
CRUCIATE
BIOMECHANICS
Measurement
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世界骨科杂志：英文版
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百世登出版集团有限公司
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月刊
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2218-5836
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出版地：
北京市朝阳区东四环中路62号楼远洋国际中
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