title: Dose-related effect of extracorporeal shock wave therapy for plantar fasciitis.
abstract: OBJECTIVE
  To examine the dose-related effect of extracorporeal shock wave therapy (ESWT) for plantar fasciitis.
  
  
  METHODS
  Sixty patients with plantar fasciitis despite conservative treatment were enrolled. The patients were divided into a low-energy group (group L: n=30, 1,000 shocks/session, energy flux density [EFD] per shock 0.08 mJ/mm(2)) and a medium-energy group (group M: n=30, 1,000 shocks/session, EFD 0.16 mJ/mm(2)). The main outcome measures were visual analogue scale (VAS), Roles and Maudsley (RM) score, and thickness of plantar fascia (PF). To compare the effects between each group, follow-up was carried out 1 week after 3 and 6 sessions, and 1 and 3 months after ESWT.
  
  
  RESULTS
  Significant VAS and RM score improvement, and PF thickness reduction were observed in both groups (p<0.01). After 3 sessions of ESWT, group M showed significant improvement in the VAS and RM score than group L, whereas after 3 additional sessions applied in group L, the main outcomes were no longer significantly different in both groups (p>0.05).
  
  
  CONCLUSIONS
  Therapeutic effect might disclose a dose-related relationship; therefore, EFD and the times of the session are considerable factors when treating with ESWT.
authors.affiliation: Department of Rehabilitation Medicine, Gwangju Veterans Hospital, Gwangju, Korea.
authors.forename: Su-Jin
authors.initials: SJ
authors.lastname: Lee
authors.forename: Jung-Ho
authors.initials: JH
authors.lastname: Kang
authors.forename: Ja-Young
authors.initials: JY
authors.lastname: Kim
authors.forename: Jin-Hong
authors.initials: JH
authors.lastname: Kim
authors.forename: Seo-Ra
authors.initials: SR
authors.lastname: Yoon
authors.forename: Kwang-Ik
authors.initials: KI
authors.lastname: Jung
keywords: Dose-related Effect; Extracorporeal shock wave therapy; Plantar fasciitis