Reggars J W, Pollard H P
Macquarie University, Centre for Chiropractic, Summer Hill, New South Wales.
J Manipulative Physiol Ther. 1995 Feb;18(2):65-71.
To determine if there is a relationship between the side of head rotation and the side of joint crack during "diversified" rotatory manipulation of the cervical spine.
Randomized experimental study.
Macquarie University, Centre for Chiropractic, Summer Hill, New South Wales.
Fifty asymptomatic subjects were recruited from the students and staff of the above college.
Single, unilateral "diversified," high velocity, low amplitude, rotatory thrust technique.
Joint crack sound wave analysis of digital audio tape (DAT) recordings, taken from two skin mounted microphones positioned on either side of the cervical spine.
All 50 subjects exhibited at least one audible joint crack sound during manipulation. Forty-seven subjects (94%) exhibited cracking on the ipsilateral side to head rotation (95% confidence interval, 83.5% to 98.7%). One subject exhibited joint cracking on the contralateral side only, while two subjects exhibited bilateral joint crack sounds. There was a statistically significant lower rate of exclusively ipsilateral joint cracking in subjects with a history of neck trauma (80% vs. 100%, p = .023).
This research suggests that during the "diversified" rotatory manipulation of the cervical spine utilized in this study, there is a higher occurrence of the joint crack on the ipsilateral side to head rotation.
确定在颈椎“整脊”旋转手法操作过程中，头部旋转方向与关节弹响侧之间是否存在关联。
随机实验研究。
新南威尔士州夏山麦考瑞大学整脊中心。
从上述学院的学生和教职员工中招募了50名无症状受试者。
单次、单侧“整脊”、高速、低幅度旋转推压技术。
对来自置于颈椎两侧皮肤表面的两个麦克风所录制的数字录音带（DAT）进行关节弹响声波分析。
所有50名受试者在手法操作过程中均至少出现一次可闻及的关节弹响。47名受试者（94%）在头部旋转的同侧出现弹响（95%置信区间，83.5%至98.7%）。1名受试者仅在对侧出现关节弹响，而2名受试者出现双侧关节弹响声。有颈部创伤史的受试者中，单纯同侧关节弹响的发生率在统计学上显著较低（80%对100%，p = 0.023）。
本研究表明，在本研究中所采用的颈椎“整脊”旋转手法操作过程中，头部旋转同侧关节弹响的发生率较高。
