Garvey T A, Marks M R, Wiesel S W
Department of Orthopaedic Surgery, George Washington University Medical Center, Washington, D.C.
Spine (Phila Pa 1976). 1989 Sep;14(9):962-4. doi: 10.1097/00007632-198909000-00008.
The efficacy of trigger-point injection therapy in treatment of low-back strain was evaluated in a prospective, randomized, double-blind study. The patient population consisted of 63 individuals with low-back strain. Patients with this diagnosis had nonradiating low-back pain, normal neurologic examination, absence of tension signs, and lumbosacral roentgenograms interpreted as being within normal limits. They were treated conservatively for 4 weeks before entering the study. Injection therapy was of four different types: lidocaine, lidocaine combined with a steroid, acupuncture, and vapocoolant spray with acupressure. Results indicated that therapy without injected medication (63% improvement rate) was at least as effective as therapy with drug injection (42% improvement rate), at a P value of 0.09. Trigger-point therapy seems to be a useful adjunct in treatment of low-back strain. The injected substance apparently is not the critical factor, since direct mechanical stimulus to the trigger-point seems to give symptomatic relief equal to that of treatment with various types of injected medication.
在一项前瞻性、随机、双盲研究中评估了触发点注射疗法治疗下背部劳损的疗效。患者群体由63名下背部劳损患者组成。诊断为此病的患者有非放射性下背部疼痛、神经系统检查正常、无张力体征，且腰骶部X线片解释为在正常范围内。他们在进入研究前接受了4周的保守治疗。注射疗法有四种不同类型：利多卡因、利多卡因联合类固醇、针灸以及冷雾剂喷雾加指压法。结果表明，不注射药物的疗法（改善率63%）至少与注射药物的疗法（改善率42%）一样有效，P值为0.09。触发点疗法似乎是治疗下背部劳损的一种有用辅助手段。注射的物质显然不是关键因素，因为对触发点的直接机械刺激似乎能带来与各种注射药物治疗相同的症状缓解。
