Body structure and Rotator cuff

Body structure noun - A particular complex anatomical part of a living thing.

Rotator cuff and body structure are semantically related. In some cases you can replace phrase "Rotator cuff" with "Body structure", this phrases are similar.

Rotator cuff noun - A supporting structure of the shoulder consisting of the muscles and tendons that attach the arm to the shoulder joint and enable the arm to move.

Body structure and rotator cuff are semantically related. You can use "Body structure" instead a noun phrase "Rotator cuff".