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Comparison of low intensity laser therapy and trigger point injection in the management of myofascial pain syndrome
Kiralp MZ, Ari H, Karabekir I, Dursun H
The Pain Clinic 2006 Jan;18(1):63-66
clinical trial
5/10 [Eligibility criteria: Yes; Random allocation: Yes; Concealed allocation: No; Baseline comparability: Yes; Blind subjects: No; Blind therapists: No; Blind assessors: No; Adequate follow-up: Yes; Intention-to-treat analysis: No; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed*

Myofascial Pain Syndrome (MPS) is quite a common clinical manifestation characterised by the presence of trigger points (TrP), muscle spasm, tenderness, motion restriction, weakness and autonomic dysfunction. The ideal therapy should be fast, cheap and long-term effective. Local anesthetic injection and low-intensity laser therapy are two types of such treatments. AIM: The main purpose of this study was to compare the effectiveness of TrP injection and low intensity laser therapy in patients with MPS. METHOD: 43 patients (14 men, 29 women) diagnosed as MPS were included in this study. In the first group (23 cases), laser therapy was applied for 3 min to each TrP within 12 sessions. In the second group (20 cases), 1 ml prilocaine 2% was injected to the TrP once a week for four consecutive weeks. The evaluation was made before the treatment (BT), after the treatment (AT) and sixth months after the treatment (SMT). Effectiveness of treatment was evaluated by a visual analog scale (VAS), a pressure algometer (AL), and a verbal pain scale (VPS). RESULTS: Outcomes and curative effects of BT and SMT were statistically significant and similar in both groups (p < 0.05). No side effects were observed in either group.

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