When a certain fracture frequently does not respond to the forms of treatment which usually produce satisfactory results in other fractures, there is, as a rule, much speculation as to the causes of failure of healing, and many suggestions are advanced for the proper form of treatment to be employed.
Injuries to the carpal bones, with one or two exceptions, practically always heal when they are reduced properly and immobilized for a short time. The frequent exception to this rule is fracture of the carpal navicular bone. Aseptic necrosis of the lunate bone not uncommonly gives an unsatisfactory result; but dislocations and the other fractures, if promptly reduced and immobilized, are generally followed by good return of function and usefulness of the hand. Although fractures and dislocations of the carpus are not common (approximately 2 per cent of all fractures, according to a review of 4,500 fractures at the Massachusetts