Laboratory Studies
See the list below:
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Laboratory studies are not necessary for the diagnosis of hamate fractures.
Imaging Studies
See the list below:
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Radiographs: Fractures to the hamate may not be readily evident on radiographic images (see the images below). [9, 10] For this reason, multiple views of the wrist, including a carpal tunnel view, supination oblique view (hook of hamate view), and flexion and extension films, should be ordered. Even when appropriate radiographs are obtained, some studies demonstrate 72% sensitivity and 88% specificity for detecting hamate fractures. [10]
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Computed tomography (CT) scan: In cases in which clinical findings suggest a fracture but the radiographic evidence is questionable, a CT scan should be ordered (see the images below). [9] CT scanning is considered the criterion standard, with sensitivity and specificity approaching 100%. In addition, this imaging modality determines the degree of fracture displacement, which aids in therapeutic decision making.
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Magnetic resonance imaging (MRI): This study can be performed instead of CT scanning if the patient lacks neurologic and/or vascular competency in order to better view soft-tissue structures. Sensitivity and specificity approach 100% for diagnosing fractures.
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Posterior (dorsal) view of the wrist.
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Anterior palmar view.
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Anteroposterior view of the wrist.
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Lateral view of the wrist.
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Oblique view of the wrist.
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Computed tomography scan of the wrist.
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Lateral computed tomography scan of the wrist.
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Reconstruction of the hamate fracture.
