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Anterior Cruciate Ligament Transection and Synovial Fluid Lavage in a Rodent Model to Study Joint Inflammation and Posttraumatic Osteoarthritis

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Imaging of osteochondral injuries.

R Loredo¹, T G Sanders

¹Department of Radiology, University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA.

Clinics in Sports Medicine

|June 12, 2001

Summary

Magnetic Resonance (MR) imaging detects occult cartilage and bone injuries missed by X-rays. MR arthrography enhances visualization of joint surfaces and intra-articular bodies, aiding in lesion stability assessment.

Area of Science:

Orthopedics
Radiology
Sports Medicine

Background:

Acute injuries can result in cartilage or osteochondral fragments.
Radiography may miss subtle injuries, particularly those involving cartilage.
Osteochondritis dissecans requires accurate assessment of lesion stability.

Purpose of the Study:

To evaluate the role of MR imaging in detecting occult bone and cartilage injuries.
To assess the utility of MR imaging in analyzing lesion stability in osteochondritis dissecans.
To explore the benefits of MR arthrography for delineating chondral surfaces.

Main Methods:

Review of available data on MR imaging for acute joint injuries.
Comparison of MR imaging findings with radiographic analysis.

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Evaluation of MR arthrography with gadolinium contrast for intra-articular visualization.

Discussion of evolving MR imaging sequences for cartilage surface analysis.

Main Results:

MR imaging detects occult subchondral bone and cartilage injuries.
MR imaging shows potential in assessing osteochondritis dissecans stability.
Fluid at the cartilage-bone interface is indirect MR evidence of abnormality.
MR arthrography improves delineation of chondral surfaces and detection of intra-articular bodies.

Conclusions:

MR imaging is valuable for detecting injuries missed by radiography.
Further research is needed to compare MR imaging with arthroscopy for lesion stability.
Advanced MR techniques are crucial for direct cartilage surface analysis.