Plantar fasciitis treated with local steroid injection: comparison between sonographic and palpation guidance

J Clin Ultrasound. 2006 Jan;34(1):12-6. doi: 10.1002/jcu.20177.

Abstract

Purpose: To compare the effectiveness of sonographically guided and palpation-guided steroid injection for the treatment of proximal plantar fasciitis.

Patients and methods: Twenty-five consecutive patients with unilateral proximal plantar fasciitis were recruited and randomly divided into a sonographically guided group (n = 12) and palpation-guided group (n = 13). Proximal plantar fascia was assessed with a 5- to 12-MHz linear-array transducer. Pain intensity was quantified using a "tenderness threshold" (TT) and a visual analog scale (VAS). Injection of 7 mg (1 ml) of betamethasone and 0.5 ml of 1% lidocaine into the inflamed proximal plantar fascia was performed under the guidance of sonography or palpation. Patients were evaluated clinically and sonographically before injection and at 2 weeks, 2 months, and 1 year after injection. VAS- and TT-measured pain intensity, thickness, and echogenicity of the proximal plantar fascia, as well as the recurrence of heel pain, were assessed.

Results: Both VAS- and TT-measured levels of pain improved significantly after steroid injection in both groups (p < 0.001). Also, the thickness decreased significantly after injection (p < 0.01 in the palpation-guided group; p < 0.001 in the sonographically guided group). The number of patients with hypoechogenicity at the proximal plantar fascia decreased after steroid injection in both groups (p < 0.01 for both groups). The recurrence rate of plantar fasciitis in patients of the palpation-guided group (6/13) was significantly higher than that of the sonographically guided group (1/12) (p < 0.05).

Conclusions: Steroid injection can be an effective way to treat plantar fasciitis, and injection under sonographic guidance is associated with lower recurrence of heel pain.

Publication types

  • Comparative Study
  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Anti-Inflammatory Agents / administration & dosage
  • Dexamethasone / administration & dosage
  • Fasciitis, Plantar / diagnostic imaging
  • Fasciitis, Plantar / drug therapy*
  • Female
  • Humans
  • Injections, Intralesional / methods*
  • Male
  • Middle Aged
  • Pain Measurement
  • Physical Examination
  • Ultrasonography, Interventional*

Substances

  • Anti-Inflammatory Agents
  • Dexamethasone