Diagnostic Evaluation and Treatment for Partial Scapholunate Ligament Tear or Sprain
Diagnostic Evaluation
- Initial evaluation should include conventional radiographs with careful attention to positioning to assess for carpal malalignment, as recommended by the American College of Radiology 1
- CT arthrography has the highest sensitivity (nearly 100%), specificity, and accuracy for detecting scapholunate ligament tears, according to the American College of Radiology 2
- CT arthrography detects partial ligament tears more accurately than MR arthrography and has greater interobserver agreement, as stated by the American College of Radiology 3
- MRI (especially 3T) is commonly used with reported sensitivities of 65-89% for scapholunate ligament tears, as reported by the American College of Radiology 4
- High-frequency ultrasound with dynamic "clenched fist" maneuvers can be useful with sensitivity of 46-100% and specificity of 92-100% for tears of the dorsal band, as noted by the American College of Radiology 2
Treatment Algorithm
Conservative Management
- Gradual rehabilitation and physical therapy focusing on progressive strengthening is recommended, as suggested by the American College of Radiology 4
Diagnostic Imaging for Scapholunate Ligament Tears
Imaging Modalities
- MRI at 3.0T shows sensitivities of 70-87% for scapholunate tears, which is adequate but inferior to CT arthrography, according to the American College of Radiology 5
- MR arthrography provides superior accuracy compared to non-contrast MRI and identifies which specific ligament segments are torn—critical information for surgical planning, as recommended by the American College of Radiology 6