Abstract
Background
Plantar fasciitis is a frequently chronic and disabling cause of foot pain in adults. This prospective study aims to evaluate the analgesic effect of ultrasound guided dry needling in patients with chronic plantar fasciitis, refractory to conservative treatment.
Method and Materials
Patients undergoing dry needling for plantar fasciitis, followed by perifascial injection between Jan ′09 and Feb ′10 were identified.
Pain scores were recorded on a visual analogue scale from 0 (no pain) to 10 (worst pain possible) before the procedure, 2 weeks and 6 weeks post procedure. Patients were also contacted in April to assess their current pain level.
Responses were graded as excellent (> 75% pain score improvement), good (50-74%), fair (25-49%) and poor (<25% relief).
Any complications or need for any further intervention were recorded.
Results
55 feet (46 patients) were identified. All patients had had no relief with previous treatment. 24 feet who had calf tightness had undergone a gastrocnemius muscle lengthening. All patients had radiological confirmation of diagnosis prior to undergoing the procedure.
At 2 weeks: 1 foot lost to follow-up. 43/54 feet had excellent or good pain relief.
At 6 weeks: 5 feet (4 patients) were lost to follow up. 37 feet (28 patients) reported excellent or good pain relief. 11/13 feet patients with fair to poor response underwent a repeat procedure.
Redo-Procedure. Using the same outcome measures, 8/11 and 9/11 feet had excellent or good response at 2 and 6 weeks respectively.
Long-term follow-up:
42 feet (34 patients) were contacted. 13 feet (12 patients) lost to follow-up.
Follow-up duration from 2 to 13 months. Mean F/U = 7 months.
23 feet (5 redos) had excellent or good outcome 19 feet (6 redos) had fair or poor outcome.
If symptoms reoccurred, average duration of total analgesic effect was 3 months.
Conclusion
80% and 74% of patients had excellent or good outcome at 2 and 6 weeks respectively. After an average of 7 months follow-up, 55% patients had excellent or good results. In those patients in whom symptoms recurred, the average duration of total analgesic effect was 3 months. We believe that ultrasound guided dry needling is an effective treatment method for plantar fasciitis.
