Abstract
Idiopathic avascular necrosis of the scaphoid, or Preiser disease, is a rare condition. Both the etiology and the pathology are still not well understood. We here present 2 cases with this disease and discuss the recommended treatment according to the stage of disease progression and by reference to previous studies in the literature. Similar to Kienböck disease, the recommended treatment should be selected according to the degree of disease progression. We believe that vascularized bone graft should be restricted to Herbert stage I or II cases with no evidence of radiocarpal arthritis or carpal instability. Our first case showed excellent revascularization following vascularized bone graft, as revealed by magnetic resonance image findings. The presence of arthrosis of the radiocarpal or mid-carpal joints is an indication for scaphoid excision with midcarpal fusion or proximal row carpectomy.
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