How can you determine if the scapula is a right or left scapula?

To determine if a scapula is right or left, the orientation of the glenoid fossa is crucial. The glenoid fossa is the shallow cavity on the lateral aspect of the scapula where the humerus articulates. Its orientation faces laterally, which means that when identifying the side of the scapula, you should position it so that the glenoid fossa is directed toward the side of the body it represents. Therefore, if the glenoid fossa is facing to the right, it is the right scapula; if it faces to the left, it is the left scapula. This anatomical feature is the most reliable indicator for determining which side the scapula corresponds to when viewed in anatomical position.

The other characteristics, while they can provide additional context, are not definitive for side identification. For example, the size of the acromion process can vary among individuals and does not provide a clear indication of the side of the scapula. Similarly, the spine of the scapula is present on the dorsal side regardless of whether the scapula is right or left. Lastly, the curvature of the scapular body can vary but is not a reliable determinant for identifying sides. Focusing on the orientation of the glenoid fossa offers