Osteoblastoma of the carpal navicular: a case report and review of the literature.

Osteoblastoma of the scaphoid is an infrequent cause of hand and wrist pain. The few reported cases emphasize the rarity of osteoblastoma in hand and wrist localizations. Pathological examination is mandatory before treatment due to lack of distinctive clinical and radiological features. We report the case of a 17-year-old right-handed girl who presented with a more than 7-month history of progressive right-wrist pain. No history of trauma was reported. Conservative treatment with anti-inflammatory medications before referral was unsuccessful. The authors present the diagnostic difficulties and the treatment that was applied: proximal row carpectomy. Treatment options, according to the literature, also include scaphoidectomy and tumor curettage with bone grafting.

Bilateral anterior dislocation of the shoulders at the start of a backstroke competition.

Bilateral anterior dislocation of the shoulders is very rare. A 20-year-old man presented with bilateral anterior shoulder dislocation as a result of a diving incident. He complained of pain and restriction of movement in both shoulders with abducted and externally rotated arms. Radiographs revealed that the shoulders were dislocated. The patient was treated with closed reduction and was able to resume swimming 3 months later. To our knowledge, this is the first bilateral anterior dislocation of the shoulders during a backstroke swimming competition that was caused by this mechanism of injury. The rarity of this lesion and its uncommon mechanism prompted us to relate this observation.