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A specific bone marrow edema around the foot and ankle following trauma and immobilization therapy: pattern

Iian Elias1, Adam C Zoga, Mark E Schweitzer

  • 1Thomas Jefferson University Hospital, Department of Orthopaedic Surgery, Rothman Institute, 925 Chestnut Street, Philadelphia, PA 19107, USA. ilan.elias@rothmaninstitute.com

Foot & Ankle International
|May 4, 2007
PubMed
Abstract

Insights

A specific bone marrow edema pattern on foot and ankle MRI is common after immobilization. This MRI finding is typically transient and does not indicate new symptoms or affect recovery.

Area of Science:

  • Radiology
  • Orthopedics
  • Musculoskeletal Imaging

Background:

  • MRI reveals a characteristic bone marrow edema pattern in the foot and ankle following immobilization therapy.
  • Investigated potential causes and clinical significance of this post-immobilization MRI finding.

Purpose of the Study:

  • To describe and analyze a specific bone marrow edema pattern observed on MRI in patients after lower limb immobilization.
  • To correlate MRI findings with clinical presentation, treatment, and recovery outcomes.

Main Methods:

  • Retrospective review of 52 ankle MRI examinations in 18 patients treated with immobilization for traumatic injuries.
  • Characterization of bone marrow edema patterns (distribution, extent, location, evolution) and correlation with clinical data.

Main Results:

  • A consistent bone marrow edema pattern was observed, predominantly in subchondral, subcortical, and subenthesial locations.
  • Edema was most frequent within 12 weeks of immobilization completion or weight-bearing resumption, not correlating with new symptoms.
  • Bone marrow edema resolved over time without impacting recovery or function; no cases suggested reflex sympathetic dystrophy.

Conclusions:

  • A distinct bone marrow edema pattern on foot and ankle MRI is a recognized finding after immobilization therapies.
  • This pattern appears consistent, generally unrelated to clinical symptoms, and resolves without intervention.
  • Further imaging or treatment changes based solely on this MRI finding are not currently warranted.

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