Kuruoglu R, Oh S J
Department of Neurology, University of Alabama at Birmingham.
Electromyogr Clin Neurophysiol. 1993 Sep;33(6):347-51.
Ankle (ATR), patellar (PTR) and triceps (TTR) T-reflex responses were recorded in 48 limbs of 24 normal volunteers by delivering tendon taps with a hand operated electronic hammer. Latency to the onset of the triggered response, peak to peak amplitude and duration of the wave were measured after several repetitions. In all individuals, ATR and PTR were observed, while in 27% of limbs, TTR was absent. Shortest latency and duration of the elicited response were chosen to calculate normal means. Side differences were also evaluated. As amplitude showed a marked interindividual and side to side variation, lowest recorded value was selected to represent the lower limit of normal. Age, height, and leg length showed a good correlation with minimum ATR latency (p < 0.001). PTR latency correlated significantly with age, height, (p < 0.001) and thigh length (p < 0.001). No significant correlation existed between age, height, arm length and TTR latency (p > 0.01). In conclusion, ATR and PTR are acceptable tests in clinical practice, whereas TTR is not reliable, as it is technically difficult to elicit in some normal individuals.
通过使用手动电子锤轻敲肌腱，在24名正常志愿者的48条肢体上记录了踝关节（ATR）、髌腱（PTR）和肱三头肌（TTR）的T反射反应。在多次重复后，测量触发反应开始的潜伏期、峰峰值幅度和波的持续时间。在所有个体中，均观察到ATR和PTR，而在27%的肢体中，未观察到TTR。选择引发反应的最短潜伏期和持续时间来计算正常均值。还评估了两侧差异。由于幅度显示出明显的个体间和左右侧差异，因此选择记录的最低值来代表正常下限。年龄、身高和腿长与最小ATR潜伏期显示出良好的相关性（p < 0.001）。PTR潜伏期与年龄、身高（p < 0.001）和大腿长度（p < 0.001）显著相关。年龄、身高、臂长与TTR潜伏期之间无显著相关性（p > 0.01）。总之，在临床实践中，ATR和PTR是可接受的测试，而TTR不可靠，因为在一些正常个体中技术上难以引出。
