Our systematic review synthesized evidence from eight RCTs evaluating diverse complementary and alternative therapies (CATs) for back pain. Overall, the results underscore the clinical potential of therapies such as Tai Chi, Gua Sha, traditional massage methods, acupuncture modalities, and topical herbal preparations in alleviating pain, reducing disability, and enhancing functional capacity. Multiple studies demonstrated statistically significant reductions in pain intensity using validated outcomes like the VAS and ODI. For instance, Tai Chi, a low-impact mind-body practice, was associated with moderate to large improvements in pain and disability metrics (
19), supporting previous evidence that mind-body interventions can modulate neuromuscular control and central sensitization (
24,
25). Similarly, Luo et al. demonstrated a substantial effect of hand-ear acupuncture on RMDQ scores (
21), echoing findings in systematic reviews where acupuncture has been shown to outperform placebo and conventional care in reducing CLBP symptoms (
26,
27). Manual therapies such as Gua Sha (
18), Fateh massage (
16), and Thai self-massage (
20) also yielded positive outcomes, reinforcing the role of tactile stimulation and fascial manipulation in pain inhibition, potentially via the gate control theory and myofascial trigger point deactivation (
28,
29). Notably, Giannetti et al. reported high efficacy of comfrey root extract ointment in managing acute lower back pain (
23), which aligns with prior findings on its anti-inflammatory and analgesic properties (
30,
31). However, the lack of reported effect sizes and confidence intervals in several studies (
16-
18,
20,
23) limits the ability to quantify the magnitude of these effects and perform a meta-analysis, highlighting the need for standardized reporting in future research. Despite these promising results, methodological limitations must be acknowledged. Blinding was not feasible in most physical or exercise-based interventions, introducing performance bias, and allocation concealment procedures were often inadequately reported. Additionally, sample sizes were modest in several trials, and follow-up durations were limited, reducing the ability to draw conclusions about long-term efficacy and recurrence. Furthermore, publication bias may have influenced the findings, as the limited number of included studies (n = 8) and the predominance of positive results suggest that studies with null or negative outcomes may be underreported. The inclusion of only peer-reviewed studies in English and Persian may have excluded relevant unpublished or gray literature, potentially skewing the results toward positive outcomes. Future reviews should incorporate broader searches, including gray literature and non-English publications, to mitigate this risk.
Nonetheless, this review aligns with clinical practice guidelines that advocate non-pharmacologic interventions as first-line strategies for CLBP management (
32,
33). The results suggest that CATs, when implemented judiciously, could contribute to a multimodal, patient-centered approach to chronic pain. Importantly, cultural context and patient preference, often overlooked in conventional paradigms, may enhance adherence and satisfaction with CAT-based regimens (
34,
35).
It is worth mentioning that a meta-analysis was not conducted in this review due to substantial heterogeneity among the included studies. The interventions varied widely in modality (e.g., massage, Tai Chi, acupuncture, herbal ointments), treatment duration, comparator groups, and outcome measures (e.g., VAS, RMDQ, ODI). Additionally, several studies did not report sufficient quantitative data — such as standardized effect sizes, standard deviations, or confidence intervals — necessary for calculating pooled estimates. Given these methodological and reporting inconsistencies, a quantitative synthesis was deemed inappropriate, and a narrative synthesis was conducted instead to preserve the integrity and interpretability of the findings. Future studies should aim to standardize protocols across CAT modalities, report precise effect sizes and confidence intervals, and adopt longer-term follow-up. Comparative trials assessing CATs as adjuncts to conventional therapies could further refine their integration into modern rehabilitation frameworks. Most of the variables used in the present study are related to the evaluation of pain intensity and performance level, whose findings mainly confirm the positive effects of these treatment methods.
5.1. Conclusions
This systematic review demonstrates that CATs offer promising, non-pharmacological options for managing CLBP. Across eight RCTs, modalities such as Tai Chi, traditional massage techniques, acupuncture variations, Gua Sha, and comfrey root extract were associated with significant reductions in pain intensity and improvements in functional outcomes. While the degree of effect varied, several interventions, particularly Tai Chi and acupuncture, showed moderate to large treatment effects with acceptable safety profiles. These findings support recent clinical guidelines advocating for integrative approaches to CLBP that prioritize patient-centered care and minimize reliance on pharmaceuticals.
Nonetheless, limitations in study design and reporting temper the strength of these conclusions. Several trials exhibited risks of performance or detection bias, and few provided long-term follow-up or standardized effect estimates. The geographic concentration of included studies, primarily from Iran, China, and Taiwan, may limit the generalizability of findings to other populations with different cultural and healthcare contexts. The heterogeneity in intervention protocols also limits direct comparisons. To solidify the role of CATs in mainstream care, future research should emphasize methodological rigor, include larger and more diverse patient populations, and evaluate both clinical and economic outcomes over time. Despite these gaps, the collective evidence suggests that CATs are valuable additions to the therapeutic arsenal for individuals suffering from CLBP.