1. Comparison of 3 Needle Sizes for Trigger Point Injection in Myofascial Pain Syndrome of Upper- and Middle-Trapezius Muscle: A Randomized Controlled Trial 
Seung-Hyun Yoon, MD, PhD, Ueon Woo Rah, MD, PhD, Seung Soo Sheen, MD, MS, Kye Hee Cho, MD 
Archives of Physical Medicine and Rehabilitation 
Volume 90, Issue 8, Pages (August 2009)
DOI: /j.apmr
Copyright © 2009 American Congress of Rehabilitation Medicine Terms and Conditions

2. Fig 1
Consolidated Standards of Reporting Trials flow chart of the study. TPI, trigger point injection.
Archives of Physical Medicine and Rehabilitation  , DOI: ( /j.apmr )
Copyright © 2009 American Congress of Rehabilitation Medicine Terms and Conditions

3. Fig 2
Mean changes of VAS score at pre- (day 0) and post- (days 1, 4, 7, 14) treatment. A negative change indicates a more favorable result. There were significant differences of VAS score at posttreatment on days 4, 7, 14 compared with pretreatment in all groups. There were no significant differences between 3 different needle size groups at pre- and posttreatment on days 1, 4, 7, 14. No statistically significant differences between 3 different needle size groups at pre- and posttreatment on days 1, 4, 7, 14 (P>.05). Mean values and SE are shown. *Statistically significant difference compared with pretreatment (P<.013).
Archives of Physical Medicine and Rehabilitation  , DOI: ( /j.apmr )
Copyright © 2009 American Congress of Rehabilitation Medicine Terms and Conditions

4. Fig 3
Mean changes of NDI score at pre- (day 0) and posttreatment (days 7, 14). A negative change indicates a more favorable result. There were significant differences of NDI score at posttreatment on days 7, 14 compared with pretreatment in all groups. There were no significant differences between 3 different needle size groups at pre- and posttreatment on days 7, 14. No statistically significant differences between 3 different needle size groups at pre- and posttreatment on days 7, 14 (P>.05). Mean values and SE are shown. *Statistically significant difference compared with pretreatment (P<.025).
Archives of Physical Medicine and Rehabilitation  , DOI: ( /j.apmr )
Copyright © 2009 American Congress of Rehabilitation Medicine Terms and Conditions

5. Fig 4
Mean changes of SF-36 at pre- (day 0) and posttreatment (days 7, 14). A positive change indicates a more favorable result. There were significant differences in SF-36 score at posttreatment on days 7, 14 compared with pretreatment in the 21- and 23-gauge needle groups. But in the 25-gauge needle groups, there was no difference in SF-36 score at posttreatment on days 7, 14. There were no significant differences between 3 different needle size groups at pre- and posttreatment on day 7. There were significant differences between the 21- and 25-gauge needle groups at posttreatment on day 14. Mean values and SE are shown. *Statistically significant difference compared with pretreatment (P<.025). †Statistically significant difference between the 21- and 25-gauge needle group on day 14 (P<.05).
Archives of Physical Medicine and Rehabilitation  , DOI: ( /j.apmr )
Copyright © 2009 American Congress of Rehabilitation Medicine Terms and Conditions