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Archives of Orthopaedic and Trauma Surgery

, Volume 132, Issue 4, pp 499–508 | Cite as

Extracorporeal shock wave therapy in early osteonecrosis of the femoral head: prospective clinical study with long-term follow-up

  • Maria Chiara VulpianiEmail author
  • Mario Vetrano
  • Donatella Trischitta
  • Laura Scarcello
  • Federica Chizzi
  • Giuseppe Argento
  • Vincenzo Maria Saraceni
  • Nicola Maffulli
  • Andrea Ferretti
Orthopaedic Outcome Assessment

Abstract

Introduction

Extracorporeal shock wave therapy (ESWT) may exert beneficial effects in avascular necrosis of femoral head (AVNFH).

Patients

The current study evaluated the effectiveness of ESWT in reducing pain and in slowing down the progression of bone damage in 36 patients with unilateral AVNFH of stage Association Research Circulation Osseous (ARCO) I, II and III. At the beginning of the study, 10 hips were classified as stage I, 11 as stage II and 15 as stage III. Each treatment cycle included four sessions, with 2,400 impulses each administered at 0.50 mJ/mm2, at 48–72 h intervals. Follow-up examinations were scheduled at 3, 6, 12 and then 24 months.

Method

Clinical assessments included assessment of pain scores, Harris Hip Scores and Roles and Maudsley score. Plain radiographs and magnetic resonances of the hip were used to evaluate the size of the lesion, the extent of collapse of subchondral bone, and degenerative changes of the hip joint.

Results

Patients from ARCO stage I group and stage II group achieved significantly better results than patients from ARCO stage III group at all follow-up time points (p < 0.005). During the follow-up period, 10 of the 15 stage III ARCO patients received an arthroplasty. ARCO stages I and II lesions were unchanged on radiographs and on magnetic resonance images.

Conclusion

ESWT in ARCO stages I and II may help to prevent progression of the area of avascular necrosis and manage pain.

Keywords

Shock wave therapy Avascular necrosis of femoral head ESWT AVNFH Conservative treatment 

Notes

Conflict of interest

The authors declare that they have no conflict of interest.

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Copyright information

© Springer-Verlag 2012

Authors and Affiliations

  • Maria Chiara Vulpiani
    • 1
    Email author
  • Mario Vetrano
    • 1
  • Donatella Trischitta
    • 1
  • Laura Scarcello
    • 1
  • Federica Chizzi
    • 1
  • Giuseppe Argento
    • 2
  • Vincenzo Maria Saraceni
    • 1
  • Nicola Maffulli
    • 3
  • Andrea Ferretti
    • 4
  1. 1.Physical Medicine and Rehabilitation UnitSapienza University School of Medicine, Sant’Andrea HospitalRomeItaly
  2. 2.Department of RadiologySapienza University School of Medicine, Sant’Andrea HospitalRomeItaly
  3. 3.Centre for Sports and Exercise MedicineBarts and The London School of Medicine and Dentistry, Mile End HospitalLondonUK
  4. 4.Orthopaedic Unit and Kirk Kilgour Sports Injury CenterUniversity School of Medicine, Sant’Andrea HospitalRomeItaly

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