The Use of Acupuncture for Plantar Heel Pain: a systematic review

Heel pain, technically known as plantar fasciitis or plantar heel pain, represents one of the most common problems encountered in medical and podiatric practice. This condition affects millions of people worldwide, causing not only significant physical discomfort but also major limitations in daily activities and substantial costs to healthcare systems. The typical clinical picture includes intense pain in the first steps in the morning, worsening with body weight, and tenderness on palpation in the heel bone region. Despite its high prevalence, the treatment of this condition remains a challenge, since conventional approaches frequently produce inconsistent results and may be associated with significant side effects.

The present study constitutes a comprehensive systematic review that investigated the efficacy of acupuncture in the treatment of plantar heel pain. The researchers conducted an extensive search across multiple scientific databases, including PubMed, MEDLINE, and other specialized sources, covering publications from the start of records through the end of 2011. The methodology employed was rigorous, following internationally recognized protocols and registered in PROSPERO, an international database of systematic reviews. The authors specifically analyzed randomized controlled trials and comparative studies, evaluating methodological quality through validated instruments such as CONSORT, STRICTA, and the Downs & Black Quality Index.

Eight studies that met the inclusion criteria were included: five randomized clinical trials and three comparative studies, totaling more than one thousand participants with different demographic characteristics and symptom durations.

The results obtained demonstrated promising evidence for the use of acupuncture in the treatment of plantar heel pain. The study with the highest methodological quality, conducted by Zhang and colleagues in China, revealed that the acupuncture point PC-7 (located on the wrist) was significantly more effective than point LI-4 for relieving heel pain, maintaining benefits for up to six months after treatment. Another well-designed study, conducted in Greece by Karagounis and colleagues, demonstrated that the addition of acupuncture to conventional treatment (including anti-inflammatory medications, ice, and stretching exercises) resulted in nearly twice the improvement compared with standard treatment alone. While the group that received only conventional treatment showed a 26% reduction in pain, the group that received additional acupuncture achieved 47% improvement.

Additional studies suggested benefits with different approaches, including electroacupuncture applied at local and classic points, as well as the use of infrared laser at specific points.

The clinical implications of these findings are significant for both patients and healthcare professionals. Acupuncture emerges as a valid therapeutic option that can be considered alone or in combination with conventional treatments for plantar heel pain. The level of evidence found (levels I-II) is comparable to that available for conventionally used interventions, such as stretching exercises, night splints, or corticosteroid injections, but potentially with a lower risk of adverse effects. For patients, this means an additional treatment alternative, especially valuable considering that many conventional approaches have limited adherence due to side effects or discomfort.

For healthcare professionals, the results suggest that acupuncture should be included in treatment recommendations for this condition, offering an additional therapeutic tool in their clinical arsenal.

However, the review also identified important limitations that must be considered when interpreting the results. The significant heterogeneity among the studies represents the main challenge, with considerable variations in the diagnostic criteria used, the acupuncture techniques employed, the populations studied, and the outcome measures evaluated. Some studies included only male patients, while others showed a more balanced gender distribution. The duration of symptoms varied dramatically among participants, from a few days to 30 years, and one study suggested that treatment efficacy may be inversely related to symptom duration.

In addition, the methodological quality of the studies was variable, with only two studies meeting standards of excellence, while others showed significant limitations in aspects such as adequate blinding, bias control, and transparency in reporting methods. The possibility of publication bias must also be considered, especially considering that several studies were published in journals specializing in acupuncture, where there may be a tendency to favor positive results. Despite these limitations, the findings provide a solid basis for considering acupuncture as a legitimate therapeutic option for plantar heel pain, with the caveat that future research with greater methodological uniformity and larger samples will be needed to establish more precise treatment protocols and identify which patients would benefit most from this therapeutic approach.