Skip to main content

Official Journal of the Italian Society of Orthopaedics and Traumatology

Rapid resolution of femoral head osteonecrosis after rotational acetabular osteotomy


The natural history of osteonecrosis of the femoral head is generally thought to be one of progressive deterioration if no intervention is undertaken. However, it is unknown whether surgical intervention is beneficial for patients with a small region of osteonecrosis. We observed rapid improvement of MRI findings after rotational acetabular osteotomy (RAO) was performed in a young patient with osteonecrosis of the femoral head. The band-like low signal area on T2-weighted images almost resolved by six months after surgery. He returned to work as an electrician by six months after surgery. Early surgical intervention such as RAO that alters the mechanical force acting on the necrotic region of the femoral head may accelerate the recovery of osteonecrosis and the improvement of symptoms.

Author information

Authors and Affiliations


Corresponding author

Correspondence to Masahiko Nozawa.

Rights and permissions

Open Access This article is distributed under the terms of the Creative Commons Attribution 2.0 International License ( ), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Reprints and Permissions

About this article

Cite this article

Nozawa, M., Matsuda, K., Maezawa, K. et al. Rapid resolution of femoral head osteonecrosis after rotational acetabular osteotomy. J Orthopaed Traumatol 9, 221–224 (2008).

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI:


  • Osteonecrosis of the femoral head
  • MRI finding
  • Rotational acetabular osteotomy