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Subchondroplasty: What the Radiologist Needs to Know.

Christoph A Agten1,2,3, Daniel J Kaplan3,4, Laith M Jazrawi3,4

  • 11 Center for Musculoskeletal Care, NYU Langone Medical Center, New York, NY.

AJR. American Journal of Roentgenology
|September 14, 2016
PubMed
Summary

Subchondroplasty, a minimally invasive procedure for knee osteoarthritis, involves bone marrow lesion treatment. This study details the surgical technique and imaging findings, highlighting expected postoperative appearances and potential complications for radiologists.

Keywords:
MRIbone marrow edemabone marrow lesioncalcium phosphatekneepostoperative imagingsubchondroplasty

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Area of Science:

  • Orthopedic surgery
  • Radiology
  • Biomedical engineering

Background:

  • Bone marrow lesions (BMLs) are associated with knee osteoarthritis and insufficiency fractures.
  • Subchondroplasty is a novel minimally invasive procedure designed to treat painful BMLs.
  • Understanding the imaging characteristics of subchondroplasty is crucial for accurate diagnosis and patient management.

Purpose of the Study:

  • To describe the surgical technique of subchondroplasty.
  • To present the pre- and postoperative imaging findings in a case series.
  • To familiarize radiologists with the expected imaging outcomes and potential complications.

Main Methods:

  • A small case series of patients undergoing subchondroplasty was retrospectively reviewed.
  • Surgical technique details were documented.
  • Pre- and postoperative imaging (MRI, X-ray) were analyzed for characteristic findings.

Main Results:

  • The procedure involves injecting bone substitute into BMLs.
  • Postoperative imaging demonstrates expected changes related to the injected material.
  • Specific imaging features indicative of successful treatment and potential complications were identified.

Conclusions:

  • Radiologists must recognize the typical imaging findings following subchondroplasty.
  • Familiarity with these appearances aids in differentiating expected changes from complications.
  • This knowledge is essential for appropriate interpretation of postoperative knee imaging.