Roentgenographic examination of the wrist: a systematic study of the normal, lax and injured wrist. Part 2: Stress views.

The standard and positional views of 53 normal wrists have been compared to views taken under stress. The stresses applied can be divided into normal and abnormal ones. All the injured wrists with pathological roentgenographic appearances were operated on and thus the findings confirmed. Roentgenographic examination of the wrist under stress appears to be a valuable and reliable diagnostic aid. Two types of laxity of the wrist and a radio-anatomical classification of wrist instabilities are defined.