What is the recommended angle for the central ray angle used for a tangential projection of the sesamoids?

The recommended angle for the central ray when performing a tangential projection of the sesamoids is 0 degrees. This means the central ray is perpendicular to the film or digital detector. Achieving this position allows for optimal visualization of the sesamoids, which are small bones located under the first metatarsophalangeal joint.

By using a 0-degree angle, the projection minimizes distortion and provides a clear image of the sesamoids without foreshortening. This is especially important for the sesamoids, as they can be easily overlooked in standard views unless specifically targeted with the appropriate angle. Therefore, this method ensures accurate assessment and diagnosis of any potential pathologies involving these bones.