The histogram of glenoid version measured with the two different methods. (A) The histogram of glenoid version in the normal shoulders. The values measured with the conventional method are concentrated between -5° and 5°, and those with the vault method are between 5° and 15°. The distributions of the values of version are significantly larger with the conventional method than with the vault method (p = 0.030). (B) The histogram of glenoid version measured in the arthritic shoulders. The values are widely distributed from -8.8° to 42.3° with the conventional method and from 1.4° to 56.8° with the vault method. The distributions of the values of version are not different between the conventional method and the vault method in the arthritic shoulder group (p = 0.737).