INTRODUCTION:

　　The effectiveness of the acupuncture already has been proved for innumerable studies in the treatment of the pain of the musculoskeletal system. In this context, an empirical study of the creator of YNSA (Yamamoto New Scalp Acupuncture) indicates considerable relief of pain after only one treatment session. However, few scientific evidences exist using YNSA in the treatment of pain. In this study, a Transversal Clinical Trial with twenty six patients of chronic neck pain, it was measured the effect of the stimulation of the “Basic-points A” of YNSA, in the treatment of the pain and the degree of mobility of the cervical spine.

　　OBJECTIVE: 

　　The objective of this study was to determine the effectiveness of the use of the YNSA in the treatment of pain and degree of cervical spine mobility of twenty six patients with chronic neck pain using the “Basic-Points A” with just three acupuncture needles in only one session. It was also evaluated the effectiveness of this single session of YNSA for the treatment of pain in a period of 48 hours after the end of the acupuncture session.

　　METHODS:

　　Twenty six patients with age between 39 and 68 years with chronic neck pain had been treated with only one session using YNSA acupuncture technique with only three acupuncture needles in “Basic-Points A” of the scalp. The level of pain was measured by Visual Analog Scale (VAS) of pain from 0 to 10 points. The measurements had been made before the session, immediately after the insertion of the needles, in the end of the sessions, as well as 24 and 48 hours after the end of the acupuncture session. Also the degree of mobility of the cervical spine free of pain were measured before and after the session. In the sessions, it was used only three needles of acupuncture for patient and the duration of each session was thirty minutes. The region of the cervical spine on the scalp corresponding to the “Basic-points A” had been used. The side of the scalp to be punctured and the success of the puncture had been defined by the pressure on the Hegu point (LI4) following the orientations of the creator of the YNSA method.

　　RESULTS:

　　The average of pain in the 26 patients using VAS before the session was 6,4. Immediately after the puncture, the pain was presented on average as 3,4 and in the end of the session as 2,9. After 24 hours, pain presented on average as 3,6 and in 48 hours as 3,3. About the amplitude振幅 of cervical rotation without pain of the 26 patients, the average before the sessions was of 105º, changing to 129º after the session. Besides, 04 patients had related relief in at least one another symptom, being that 03 of these had related relief of headache. Immediately after the puncture, all the 26 patients related some relief using VAS scale of pain. In the end of the session, 19 patients had related to a VAS value smaller than the one related before the beginning of the session. The others 07 patients had not related an inferior value of VAS compared to the value before the session. Besides, in a period of 48 hours, 15 patients had related an inferior value in the VAS to the presented one before the treatment, and the others 11 patients had kept the VAS values or had presented bigger VAS values compared to the one in the end of the session.

　　CONCLUSIONS:

　　The average of reduction of pain of the patients in the EAV was 3,5. The use of “Basic-points A” of the YNSA was presented efficient as method of treatment in the reduction of pain and increment of cervical spine mobility for the majority of the patients with chronic neck pain who had participated of the study. Still, for 57% of the studied patients the effect of relief of cited pain had lasted till 48 hours after the end of the session. However, even so in some patients pain has reduced still more until the period of 48 hours after the session, in other patients, especially those with chronic neck pain for more than 10 years, the effects wasn’t too much satisfactory, suggesting the necessity of usage of complementary YNSA points. In conclusion the use of “Basic-Points A” in one unique session can promote considerable relief of pain and increment of cervical spine mobility. However, further studies of YNSA are still necessary.