Abstract：
BACKGROUND: The levator veli palatini (LVP) muscle has two segments with distinct roles in velopharyngeal function. Previous research suggests longer extravelar segments with shorter intravelar segments may lead to a more advantageous mechanism for velopharyngeal closure. The purpose of this study was to examine whether the distribution of the LVP intravelar and extravelar segments differs between children with cleft palate with and without VPI and controls.
METHODS: The study included 97 children: 37 with cleft palate +/- lip with VPI, 37 controls, and 19 with cleft palate with normal resonance. Measures included mean LVP length, mean extravelar LVP length, and intravelar LVP length.
RESULTS: Overall mean LVP length was similar (P = .267) between controls and children with cleft palate (with and without VPI). However, there was a significant difference (P < .001) between group for both intravelar and extravelar LVP lengths: the intravelar segment was significantly longer in those with VPI compared to controls and children with cleft palate and normal resonance; and the extravelar segment was significantly shorter in those with VPI compared to controls and children with cleft palate and normal resonance.
CONCLUSIONS: Results from this study demonstrate a significant difference between the distribution of the functional segments of the LVP among children with VPI, with a more disadvantageous distribution of the muscle segments among those with VPI.
METHODS: The study included 97 children: 37 with cleft palate +/- lip with VPI, 37 controls, and 19 with cleft palate with normal resonance. Measures included mean LVP length, mean extravelar LVP length, and intravelar LVP length.
RESULTS: Overall mean LVP length was similar (P = .267) between controls and children with cleft palate (with and without VPI). However, there was a significant difference (P < .001) between group for both intravelar and extravelar LVP lengths: the intravelar segment was significantly longer in those with VPI compared to controls and children with cleft palate and normal resonance; and the extravelar segment was significantly shorter in those with VPI compared to controls and children with cleft palate and normal resonance.
CONCLUSIONS: Results from this study demonstrate a significant difference between the distribution of the functional segments of the LVP among children with VPI, with a more disadvantageous distribution of the muscle segments among those with VPI.
摘要：
背景：腭提肌（LVP）有两个节段，在腭咽功能中具有不同的作用。先前的研究表明，较长的外动脉段和较短的内动脉段可能导致更有利的咽喉闭合机制。这项研究的目的是检查有无VPI的left裂儿童与对照组之间LVP内和外段的分布是否不同。
方法：该研究包括97名儿童：37名腭裂+/-唇伴VPI，37个控件，19腭裂正常共振。措施包括平均LVP长度，平均外行程LVP长度，和内LVP长度。
结果：对照组和腭裂患儿（有无VPI）的总平均LVP长度相似（P=0.267）。然而,组内和外动脉LVP长度组之间存在显著差异(P<.001):与对照组和腭裂和正常共振的儿童相比,VPI组的内动脉段明显更长;与对照组和腭裂和正常共振的儿童相比,VPI组的外动脉段明显更短.
结论：这项研究的结果表明，在患有VPI的儿童中，LVP的功能节段的分布之间存在显着差异。在具有VPI的人群中，肌肉段的分布更为不利。
方法：该研究包括97名儿童：37名腭裂+/-唇伴VPI，37个控件，19腭裂正常共振。措施包括平均LVP长度，平均外行程LVP长度，和内LVP长度。
结果：对照组和腭裂患儿（有无VPI）的总平均LVP长度相似（P=0.267）。然而,组内和外动脉LVP长度组之间存在显著差异(P<.001):与对照组和腭裂和正常共振的儿童相比,VPI组的内动脉段明显更长;与对照组和腭裂和正常共振的儿童相比,VPI组的外动脉段明显更短.
结论：这项研究的结果表明，在患有VPI的儿童中，LVP的功能节段的分布之间存在显着差异。在具有VPI的人群中，肌肉段的分布更为不利。
