OAS Analysis Standard Posterior-Anterior (PA) hip image collected using different imaging such as:

Standard X-Ray Image Device

Dual-energy X-Ray absorptiometry (DXA)

Any other imaging modality

Both hips must be included (for Comprehensive assessment)

The image should cover a portion of the shaft long enough; approximately

twice the length of the femoral neck plus trochanter.

This ensure that the contribution of these parts (neck, trochanter, and shaft)

to the orientation of the femur is comprehensively taken into account.

Example of a hip image that meets OAS specifications

Must (if not all) X-ray and DXA hip images meet these specifications