Le diagnostic des fractures récentes du scaphoïde : revue de la littérature

Abstract

Fractures of the scaphoid are the most common carpal fractures. A review of the literature indicates that the prevalence of the fracture in the case of clinical suspicion is less than 50%. A quality X-ray examination remains essential as an initial diagnostic tool in the evaluation of scaphoid fractures. Its sensitivity varies from 59 to 79%. Patients with negative X-rays present with about 18.7% of scaphoid fractures; 5% of bruised scaphoid; 13% of radius fractures and 7% of miscellaneous bone lesions. If not treated promptly, a scaphoid fracture may be compounded by non-union with associated risk factors such as avascular necrosis and osteoarthritis. Considering these risks, patients with suspected scaphoid fracture with normal X-rays, routinely undergo wrist immobilization until imaging confirms or denies the presence of fracture. Consequently, more than half of the patients undergo wrist immobilization needlessly. This may have a negative impact on their professional life and personal activities while representing a high medical cost. MRI is the imaging technique of choice for suspicious or negatice X-rays. MDCT is less costly than MRI or bone scan, readily available and highly effective for trauma patients but is lacks accuracy and should be used with caution in this indication.