[Conservative treatment of fractures of the scaphoid bone--indications]

Healing-up of the bone is achieved by immobilization in 96 to 98% of all recent scaphoid fractures. The average immobilization period is eleven weeks. Different methods of immobilization are used. The majority of authors apply an upper arm plaster cast including the thumb for a period of six weeks and then a forearm plaster cast. Even fractures showing a delayed healingup of the bone can be cured in more than two thirds of the cases by prolonged immobilization. In case of dislocated and not reducible fractures as well as fractures with great fragment diastases, conservative treatment with a fist plaster cast should only be performed exceptionally, for example if there is an increased anesthesia risk. In case of negative X-ray findings (four planes) and only clinical suspicion of scaphoid fracture, an initial fracture therapy is recommended with repeated X-ray examination 14 days later. Most of the fractures which have not healed up are vertical oblique fractures within the proximal third, fractures with great diastases, or fractures which have not been immobilized long enough.