Diagnostic Imaging for Posterior Interosseous Nerve Injury

Imaging Modalities

• The American College of Radiology recommends MRI as the ideal imaging modality for evaluating tendon injuries and helping with surgical planning in cases of PIN injury, with a sensitivity ranging from 28% to 85% for the detection of extensor hood injuries 1, 2, 3
• Standard radiographs are typically normal in isolated PIN injuries but should be obtained to rule out fractures or other bony abnormalities, according to the American College of Radiology 1, 2
• CT has limited use for the diagnosis of soft tissue injuries of the hand but may be helpful if bony involvement is suspected, as stated by the American College of Radiology 1, 2
• MRI without IV contrast is the preferred advanced imaging modality for evaluating PIN injuries, as it can detect both nerve compression and associated soft tissue abnormalities, according to the American College of Radiology 1, 2, 3