Tecco S, Salini V, Calvisi V, Colucci C, Orso C A, Festa F, D'Attilio M
Department of Oral Sciences, University G.d'Annunzio, Chieti/Pescara, Italy.
J Oral Rehabil. 2006 Aug;33(8):576-87. doi: 10.1111/j.1365-2842.2005.01592.x.
The aim of the study was to evaluate the effects that an anterior cruciate ligament injury of the knee has on postural control and activity of neck, head and trunk muscles to investigate the existence of connections between the masticatory system and body posture. Surface electromyographic activity of the muscles at mandibular rest position, and during maximal voluntary clenching and posturometric and stabilometric measurements of 25 adult patients having pathology on the left knee were compared with a control non-pathological group. At rest, the patients showed a higher muscular activity of anterior temporalis, masseter, sternocleidomastoid and lower trapezius, compared with the control subjects (P < 0.05). At maximal voluntary clenching, the patients showed a lower muscular activity of the right anterior temporalis and masseter and a higher muscular activity of the lower trapezius, compared with the control subjects. For the stabilometric measurements, all the subjects showed a significant reduction in the postural centre of pressure path length during the test with eyes open and cotton rolls, compared with the test with eyes closed and mandibular rest position (P < 0.05). In addition, the patients showed a significant displacement of the postural centre of pressure in a forward direction (P < 0.05) and into the right side (P < 0.05), compared with the control subjects. Anterior cruciate ligament injury appears to be associated to a change in the activity of head, neck and trunk muscles and to a change in the position of the postural centre of pressure. Cotton rolls seem to improve the stability of the subject.
本研究的目的是评估膝关节前交叉韧带损伤对姿势控制以及颈部、头部和躯干肌肉活动的影响，以调查咀嚼系统与身体姿势之间联系的存在情况。将25例左膝有病变的成年患者在下颌休息位、最大自主紧咬时肌肉的表面肌电图活动，以及姿势测量和稳定测量结果，与一个非病理性对照组进行比较。休息时，与对照组相比，患者颞肌前束、咬肌、胸锁乳突肌和下斜方肌的肌肉活动更高（P<0.05）。最大自主紧咬时，与对照组相比，患者右侧颞肌前束和咬肌的肌肉活动更低，而下斜方肌的肌肉活动更高。对于稳定测量，与闭眼和下颌休息位测试相比，所有受试者在睁眼和咬棉卷测试期间姿势压力中心路径长度均显著缩短（P<0.05）。此外，与对照组相比，患者姿势压力中心向前（P<0.05）和向右侧（P<0.05）有显著位移。前交叉韧带损伤似乎与头、颈和躯干肌肉活动的变化以及姿势压力中心位置的变化有关。咬棉卷似乎能提高受试者的稳定性。
